An update for firefox is now available for Red Hat Enterprise Linux 5, Red Hat Enterprise Linux 6, and Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Critical. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Mozilla Firefox is an open source web browser.

This update upgrades Firefox to version 45.4.0 ESR.

Security Fix(es) :

* Multiple flaws were found in the processing of malformed web content. A web page containing malicious content could cause Firefox to crash or, potentially, execute arbitrary code with the privileges of the user running Firefox. (CVE-2016-5257, CVE-2016-5278, CVE-2016-5270, CVE-2016-5272, CVE-2016-5274, CVE-2016-5276, CVE-2016-5277, CVE-2016-5280, CVE-2016-5281, CVE-2016-5284, CVE-2016-5250, CVE-2016-5261)

Red Hat would like to thank the Mozilla project for reporting these issues. Upstream acknowledges Samuel Gross, Brian Carpenter, Mei Wang, Ryan Duff, Catalin Dumitru, Mozilla developers, Christoph Diehl, Andrew McCreight, Dan Minor, Byron Campen, Jon Coppeard, Steve Fink, Tyson Smith, Philipp, Carsten Book, Abhishek Arya, Atte Kettunen, and Nils as the original reporters.

The remote Ubuntu 14.04 LTS / 16.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-3076-1 advisory.

    Atte Kettunen discovered an out-of-bounds read when handling certain Content Security Policy (CSP)     directives in some circumstances. If a user were tricked in to opening a specially crafted website, an     attacker could potentially exploit this to cause a denial of service via application crash.
    (CVE-2016-2827)

    Christoph Diehl, Christian Holler, Gary Kwong, Nathan Froyd, Honza Bambas, Seth Fowler, Michael Smith,     Andrew McCreight, Dan Minor, Byron Campen, Jon Coppeard, Steve Fink, Tyson Smith, and Carsten Book     discovered multiple memory safety issues in Firefox. If a user were tricked in to opening a specially     crafted website, an attacker could potentially exploit these to cause a denial of service via application     crash, or execute arbitrary code. (CVE-2016-5256, CVE-2016-5257)

    Atte Kettunen discovered a heap buffer overflow during text conversion with some unicode characters. If a     user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to     cause a denial of service via application crash, or execute arbitrary code. (CVE-2016-5270)

    Abhishek Arya discovered an out of bounds read during the processing of text runs in some circumstances.
    If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit     this to cause a denial of service via application crash. (CVE-2016-5271)

    Abhishek Arya discovered a bad cast when processing layout with input elements in some circumstances. If a     user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to     cause a denial of service via application crash, or execute arbitrary code. (CVE-2016-5272)

    A crash was discovered in accessibility. If a user were tricked in to opening a specially crafted website,     an attacker could potentially exploit this to execute arbitrary code. (CVE-2016-5273)

    A use-after-free was discovered in web animations during restyling. If a user were tricked in to opening a     specially crafted website, an attacker could potentially exploit this to cause a denial of service via     application crash, or execute arbitrary code. (CVE-2016-5274)

    A buffer overflow was discovered when working with empty filters during canvas rendering. If a user were     tricked in to opening a specially crafted website, an attacker could potentially exploit this to cause a     denial of service via application crash, or execute arbitrary code. (CVE-2016-5275)

    A use-after-free was discovered in accessibility. If a user were tricked in to opening a specially crafted     website, an attacker could potentially exploit this to cause a denial of service via application crash, or     execute arbitrary code. (CVE-2016-5276)

    A use-after-free was discovered in web animations when destroying a timeline. If a user were tricked in to     opening a specially crafted website, an attacker could potentially exploit this to cause a denial of     service via application crash, or execute arbitrary code. (CVE-2016-5277)

    A buffer overflow was discovered when encoding image frames to images in some circumstances. If a user     were tricked in to opening a specially crafted website, an attacker could potentially exploit this to     cause a denial of service via application crash, or execute arbitrary code. (CVE-2016-5278)

    Rafael Gieschke discovered that the full path of files is available to web pages after a drag and drop     operation. An attacker could potentially exploit this to obtain sensitive information. (CVE-2016-5279)

    Mei Wang discovered a use-after-free when changing text direction. If a user were tricked in to opening a     specially crafted website, an attacker could potentially exploit this to cause a denial of service via     application crash, or execute arbitrary code. (CVE-2016-5280)

    Brian Carpenter discovered a use-after-free when manipulating SVG content in some circumstances. If a user     were tricked in to opening a specially crafted website, an attacker could potentially exploit this to     cause a denial of service via application crash, or execute arbitrary code. (CVE-2016-5281)

    Richard Newman discovered that favicons can be loaded through protocols not in the allowlist, such as     jar:. (CVE-2016-5282)

    Gavin Sharp discovered a timing attack vulnerability involving document resizes and link colours. If a     user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to     obtain sensitive information. (CVE-2016-5283)

    An issue was discovered with the preloaded Public Key Pinning (HPKP). If a machine-in-the-middle (MITM)     attacker was able to obtain a fraudulent certificate for a Mozilla site, they could exploit this by     providing malicious addon updates. (CVE-2016-5284)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Mozilla Firefox was updated to 45.4.0 ESR to fix the following issues (bsc#999701): The following security issue were fixed :

  - MFSA 2016-86/CVE-2016-5270: Heap-buffer-overflow in     nsCaseTransformTextRunFactory::TransformString

  - MFSA 2016-86/CVE-2016-5272: Bad cast in     nsImageGeometryMixin

  - MFSA 2016-86/CVE-2016-5276: Heap-use-after-free in     mozilla::a11y::DocAccessible::ProcessInvalidationList

  - MFSA 2016-86/CVE-2016-5274: use-after-free in     nsFrameManager::CaptureFrameState

  - MFSA 2016-86/CVE-2016-5277: Heap-use-after-free in     nsRefreshDriver::Tick

  - MFSA 2016-86/CVE-2016-5278: Heap-buffer-overflow in     nsBMPEncoder::AddImageFrame

  - MFSA 2016-86/CVE-2016-5280: Use-after-free in     mozilla::nsTextNodeDirectionalityMap::RemoveElementFromM     ap

  - MFSA 2016-86/CVE-2016-5281: use-after-free in     DOMSVGLength

  - MFSA 2016-86/CVE-2016-5284: Add-on update site     certificate pin expiration

  - MFSA 2016-86/CVE-2016-5250: Resource Timing API is     storing resources sent by the previous page

  - MFSA 2016-86/CVE-2016-5261: Integer overflow and memory     corruption in WebSocketChannel

  - MFSA 2016-86/CVE-2016-5257: Various memory safety bugs     fixed in Firefox 49 and Firefox ESR 45.4

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote MiracleLinux 4 host has a package installed that is affected by multiple vulnerabilities as referenced in the AXSA:2016-683:08 advisory.

    Mozilla Firefox is an open-source web browser, designed for standards     compliance, performance and portability.
    Security issues fixed with this release:
    CVE-2016-5250     Mozilla Firefox before 48.0 allows remote attackers to obtain     sensitive information about the previously retrieved page via Resource     Timing API calls.
    CVE-2016-5257
    ** RESERVED **     This candidate has been reserved by an organization or individual that     will use it when announcing a new security problem.  When the     candidate has been publicized, the details for this candidate will be     provided.
    CVE-2016-5261     Integer overflow in the WebSocketChannel class in the WebSockets     subsystem in Mozilla Firefox before 48.0 allows remote attackers to     execute arbitrary code or cause a denial of service (memory     corruption) via crafted packets that trigger incorrect buffer-resize     operations during buffering.
    CVE-2016-5270
    ** RESERVED **     This candidate has been reserved by an organization or individual that     will use it when announcing a new security problem.  When the     candidate has been publicized, the details for this candidate will be     provided.
    CVE-2016-5272
    ** RESERVED **     This candidate has been reserved by an organization or individual that     will use it when announcing a new security problem.  When the     candidate has been publicized, the details for this candidate will be     provided.
    CVE-2016-5274
    ** RESERVED **     This candidate has been reserved by an organization or individual that     will use it when announcing a new security problem.  When the     candidate has been publicized, the details for this candidate will be     provided.
    CVE-2016-5276
    ** RESERVED **     This candidate has been reserved by an organization or individual that     will use it when announcing a new security problem.  When the     candidate has been publicized, the details for this candidate will be     provided.
    CVE-2016-5277
    ** RESERVED **     This candidate has been reserved by an organization or individual that     will use it when announcing a new security problem.  When the     candidate has been publicized, the details for this candidate will be     provided.
    CVE-2016-5278
    ** RESERVED **     This candidate has been reserved by an organization or individual that     will use it when announcing a new security problem.  When the     candidate has been publicized, the details for this candidate will be     provided.
    CVE-2016-5280
    ** RESERVED **     This candidate has been reserved by an organization or individual that     will use it when announcing a new security problem.  When the     candidate has been publicized, the details for this candidate will be     provided.
    CVE-2016-5281
    ** RESERVED **     This candidate has been reserved by an organization or individual that     will use it when announcing a new security problem.  When the     candidate has been publicized, the details for this candidate will be     provided.
    CVE-2016-5284
    ** RESERVED **     This candidate has been reserved by an organization or individual that     will use it when announcing a new security problem.  When the     candidate has been publicized, the details for this candidate will be     provided.

Tenable has extracted the preceding description block directly from the MiracleLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of Mozilla Firefox ESR installed on the remote Windows host is 45.x prior to 45.4. It is, therefore, affected by multiple vulnerabilities :

  - A flaw exists in the HttpBaseChannel::GetPerformance()     function in netwerk/protocol/http/HttpBaseChannel.cpp     due to the program leaking potentially sensitive     resources of URLs through the Resource Timing API     during page navigation. An unauthenticated, remote     attacker can exploit this to disclose sensitive     information. (CVE-2016-5250)

  - Multiple memory safety issues exist that allow an     unauthenticated, remote attacker to potentially execute     arbitrary code. (CVE-2016-5257)

  - An integer overflow condition exists in the     WebSocketChannel::ProcessInput() function within file     netwerk/protocol/websocket/WebSocketChannel.cpp when     handling specially crafted WebSocketChannel packets due     to improper validation of user-supplied input. An     unauthenticated, remote attacker can exploit this to     execute arbitrary code. (CVE-2016-5261)

  - A heap buffer overflow condition exists in the     nsCaseTransformTextRunFactory::TransformString()     function in layout/generic/nsTextRunTransformations.cpp     when converting text containing certain Unicode     characters. An unauthenticated, remote attacker can     exploit this to execute arbitrary code. (CVE-2016-5270)

  - A type confusion error exists within file     layout/forms/nsRangeFrame.cpp when handling layout with     input elements. An unauthenticated, remote attacker can     exploit this to execute arbitrary code. (CVE-2016-5272)

  - A use-after-free error exists within file     layout/style/nsRuleNode.cpp when handling web animations     during restyling. An unauthenticated, remote attacker     can exploit this to execute arbitrary code.
    (CVE-2016-5274)

  - A use-after-free error exists in the     DocAccessible::ProcessInvalidationList() function within     file accessible/generic/DocAccessible.cpp when setting     an aria-owns attribute. An unauthenticated, remote     attacker can exploit this to execute arbitrary code.
    (CVE-2016-5276)

  - A use-after-free error exists in the     nsRefreshDriver::Tick() function when handling web     animations destroying a timeline. An unauthenticated,     remote attacker can exploit this to execute arbitrary     code. (CVE-2016-5277)

  - A buffer overflow condition exists in the     nsBMPEncoder::AddImageFrame() function within file     dom/base/ImageEncoder.cpp when encoding image frames to     images. An unauthenticated, remote attacker can exploit     this to execute arbitrary code. (CVE-2016-5278)

  - A use-after-free error exists in the     nsTextNodeDirectionalityMap::RemoveElementFromMap()     function within file dom/base/DirectionalityUtils.cpp     when handling changing of text direction. An     unauthenticated, remote attacker can exploit this to     execute arbitrary code. (CVE-2016-5280)

  - A use-after-free error exists when handling SVG format     content that is being manipulated through script code.
    An unauthenticated, remote attacker can exploit this to     execute arbitrary code. (CVE-2016-5281)

  - A flaw exists due to the certificate pinning policy for     built-in sites (e.g., addons.mozilla.org) not being     honored when pins have expired. A man-in-the-middle     (MitM) attacker can exploit this to generate a trusted     certificate, which could be used to conduct spoofing     attacks. (CVE-2016-5284)

This update upgrades Thunderbird to version 45.4.0.

Security Fix(es) :

  - Multiple flaws were found in the processing of malformed     web content. A web page containing malicious content     could cause Thunderbird to crash or, potentially,     execute arbitrary code with the privileges of the user     running Thunderbird. (CVE-2016-5257)

Mozilla Firefox was updated to version 45.4.0 ESR to fix the following issues: Security issues fixed: (bsc#999701 MFSA 2016-86) :

  - CVE-2016-5270: Heap-buffer-overflow in     nsCaseTransformTextRunFactory::TransformString

  - CVE-2016-5272: Bad cast in nsImageGeometryMixin

  - CVE-2016-5276: Heap-use-after-free in     mozilla::a11y::DocAccessible::ProcessInvalidationList

  - CVE-2016-5274: use-after-free in     nsFrameManager::CaptureFrameState

  - CVE-2016-5277: Heap-use-after-free in     nsRefreshDriver::Tick

  - CVE-2016-5278: Heap-buffer-overflow in     nsBMPEncoder::AddImageFrame

  - CVE-2016-5280: Use-after-free in     mozilla::nsTextNodeDirectionalityMap::RemoveElementFromM     ap

  - CVE-2016-5281: use-after-free in DOMSVGLength

  - CVE-2016-5284: Add-on update site certificate pin     expiration

  - CVE-2016-5250: Resource Timing API is storing resources     sent by the previous page

  - CVE-2016-5261: Integer overflow and memory corruption in     WebSocketChannel

  - CVE-2016-5257: Memory safety bugs fixed in Firefox 49     and Firefox ESR 45.4 Bug fixed :

  - Fix for aarch64 Firefox startup crash (bsc#991344)

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Ubuntu 14.04 LTS / 16.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-3112-1 advisory.

    Catalin Dumitru discovered that URLs of resources loaded after a navigation start could be leaked to the     following page via the Resource Timing API. If a user were tricked in to opening a specially crafted     website in a browsing context, an attacker could potentially exploit this to obtain sensitive information.
    (CVE-2016-5250)

    Christoph Diehl, Andrew McCreight, Dan Minor, Byron Campen, Jon Coppeard, Steve Fink, Tyson Smith, and     Carsten Book discovered multiple memory safety issues in Thunderbird. If a user were tricked in to opening     a specially crafted message, an attacker could potentially exploit these to cause a denial of service via     application crash, or execute arbitrary code. (CVE-2016-5257)

    Atte Kettunen discovered a heap buffer overflow during text conversion with some unicode characters. If a     user were tricked in to opening a specially crafted message, an attacker could potentially exploit this to     cause a denial of service via application crash, or execute arbitrary code. (CVE-2016-5270)

    Abhishek Arya discovered a bad cast when processing layout with input elements in some circumstances. If a     user were tricked in to opening a specially crafted website in a browsing context, an attacker could     potentially exploit this to cause a denial of service via application crash, or execute arbitrary code.
    (CVE-2016-5272)

    A use-after-free was discovered in web animations during restyling. If a user were tricked in to opening a     specially crafted website in a browsing context, an attacker could potentially exploit this to cause a     denial of service via application crash, or execute arbitrary code. (CVE-2016-5274)

    A use-after-free was discovered in accessibility. If a user were tricked in to opening a specially crafted     website in a browsing context, an attacker could potentially exploit this to cause a denial of service via     application crash, or execute arbitrary code. (CVE-2016-5276)

    A use-after-free was discovered in web animations when destroying a timeline. If a user were tricked in to     opening a specially crafted website in a browsing context, an attacker could potentially exploit this to     cause a denial of service via application crash, or execute arbitrary code. (CVE-2016-5277)

    A buffer overflow was discovered when encoding image frames to images in some circumstances. If a user     were tricked in to opening a specially crafted message, an attacker could potentially exploit this to     cause a denial of service via application crash, or execute arbitrary code. (CVE-2016-5278)

    Mei Wang discovered a use-after-free when changing text direction. If a user were tricked in to opening a     specially crafted website in a browsing context, an attacker could potentially exploit this to cause a     denial of service via application crash, or execute arbitrary code. (CVE-2016-5280)

    Brian Carpenter discovered a use-after-free when manipulating SVG content in some circumstances. If a user     were tricked in to opening a specially crafted website in a browsing context, an attacker could     potentially exploit this to cause a denial of service via application crash, or execute arbitrary code.
    (CVE-2016-5281)

    An issue was discovered with the preloaded Public Key Pinning (HPKP). If a machine-in-the-middle (MITM)     attacker was able to obtain a fraudulent certificate for a Mozilla site, they could exploit this by     providing malicious addon updates. (CVE-2016-5284)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

According to the versions of the firefox package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - Mozilla Firefox before 48.0 allows remote attackers to     obtain sensitive information about the previously     retrieved page via Resource Timing API     calls.(CVE-2016-5250)

  - Multiple unspecified vulnerabilities in the browser     engine in Mozilla Firefox before 49.0 and Firefox ESR     45.x before 45.4 allow remote attackers to cause a     denial of service (memory corruption and application     crash) or possibly execute arbitrary code via unknown     vectors.(CVE-2016-5257)

  - Integer overflow in the WebSocketChannel class in the     WebSockets subsystem in Mozilla Firefox before 48.0     allows remote attackers to execute arbitrary code or     cause a denial of service (memory corruption) via     crafted packets that trigger incorrect buffer-resize     operations during buffering.(CVE-2016-5261)

  - Heap-based buffer overflow in the     nsCaseTransformTextRunFactory::TransformString function     in Mozilla Firefox before 49.0 and Firefox ESR 45.x     before 45.4 allows remote attackers to cause a denial     of service (boolean out-of-bounds write) or possibly     have unspecified other impact via Unicode characters     that are mishandled during text     conversion.(CVE-2016-5270)

  - The nsImageGeometryMixin class in Mozilla Firefox     before 49.0 and Firefox ESR 45.x before 45.4 does not     properly perform a cast of an unspecified variable     during handling of INPUT elements, which allows remote     attackers to execute arbitrary code via a crafted web     site.(CVE-2016-5272)

  - Use-after-free vulnerability in the     nsFrameManager::CaptureFrameState function in Mozilla     Firefox before 49.0 and Firefox ESR 45.x before 45.4     allows remote attackers to execute arbitrary code by     leveraging improper interaction between restyling and     the Web Animations model implementation.(CVE-2016-5274)

  - Use-after-free vulnerability in the     mozilla::a11y::DocAccessible::ProcessInvalidationList     function in Mozilla Firefox before 49.0 and Firefox ESR     45.x before 45.4 allows remote attackers to execute     arbitrary code or cause a denial of service (heap     memory corruption) via an aria-owns     attribute.(CVE-2016-5276)

  - Use-after-free vulnerability in the     nsRefreshDriver::Tick function in Mozilla Firefox     before 49.0 and Firefox ESR 45.x before 45.4 allows     remote attackers to execute arbitrary code or cause a     denial of service (heap memory corruption) by     leveraging improper interaction between timeline     destruction and the Web Animations model     implementation.(CVE-2016-5277)

  - Heap-based buffer overflow in the     nsBMPEncoder::AddImageFrame function in Mozilla Firefox     before 49.0 and Firefox ESR 45.x before 45.4 allows     remote attackers to execute arbitrary code via a     crafted image data that is mishandled during the     encoding of an image frame to an image.(CVE-2016-5278)

  - Use-after-free vulnerability in the     mozilla::nsTextNodeDirectionalityMap::RemoveElementFrom     Map function in Mozilla Firefox before 49.0 and Firefox     ESR 45.x before 45.4 allows remote attackers to execute     arbitrary code via bidirectional text.(CVE-2016-5280)

  - Use-after-free vulnerability in the DOMSVGLength class     in Mozilla Firefox before 49.0 and Firefox ESR 45.x     before 45.4 allows remote attackers to execute     arbitrary code by leveraging improper interaction     between JavaScript code and an SVG     document.(CVE-2016-5281)

  - Mozilla Firefox before 49.0 and Firefox ESR 45.x before     45.4 rely on unintended expiration dates for Preloaded     Public Key Pinning, which allows man-in-the-middle     attackers to spoof add-on updates by leveraging     possession of an X.509 server certificate for     addons.mozilla.org signed by an arbitrary built-in     Certification Authority.(CVE-2016-5284)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	名前	製品	ファミリー	公開日	更新日	深刻度
93642	RHEL 5 / 6 / 7 : firefox (RHSA-2016:1912)	Nessus	Red Hat Local Security Checks	2016/9/22	2026/1/23	critical
93683	Ubuntu 14.04 LTS / 16.04 LTS : Firefox vulnerabilities (USN-3076-1)	Nessus	Ubuntu Local Security Checks	2016/9/23	2024/8/27	critical
94043	SUSE SLES11 Security Update : MozillaFirefox (SUSE-SU-2016:2513-1)	Nessus	SuSE Local Security Checks	2016/10/13	2026/1/21	critical
289314	MiracleLinux 4 : firefox-45.4.0-1.0.1.AXS4 (AXSA:2016-683:08)	Nessus	Miracle Linux Local Security Checks	2026/1/16	2026/1/16	critical
93661	Mozilla Firefox ESR 45.x < 45.4 Multiple Vulnerabilities	Nessus	Windows	2016/9/22	2026/6/23	critical
93859	Scientific Linux Security Update : thunderbird on SL5.x, SL6.x, SL7.x i386/x86_64 (20161003)	Nessus	Scientific Linux Local Security Checks	2016/10/5	2026/1/22	critical
93861	SUSE SLED12 / SLES12 Security Update : MozillaFirefox (SUSE-SU-2016:2434-1)	Nessus	SuSE Local Security Checks	2016/10/5	2026/1/22	critical
94352	Ubuntu 14.04 LTS / 16.04 LTS : Thunderbird vulnerabilities (USN-3112-1)	Nessus	Ubuntu Local Security Checks	2016/10/28	2024/8/27	critical
99809	EulerOS 2.0 SP1 : firefox (EulerOS-SA-2016-1046)	Nessus	Huawei Local Security Checks	2017/5/1	2025/12/22	critical

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