Alex Korobkin discovered that the CUPS web interface incorrectly protected against cross-site scripting (XSS) attacks. If an authenticated user were tricked into visiting a malicious website while logged into CUPS, a remote attacker could modify the CUPS configuration and possibly steal confidential data.

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

A cross-site scripting (XSS) flaw was found in the CUPS web interface.
An attacker could use this flaw to perform a cross-site scripting attack against users of the CUPS web interface. (CVE-2014-2856)

It was discovered that CUPS allowed certain users to create symbolic links in certain directories under /var/cache/cups/. A local user with the 'lp' group privileges could use this flaw to read the contents of arbitrary files on the system or, potentially, escalate their privileges on the system. (CVE-2014-3537 , CVE-2014-5029 , CVE-2014-5030 , CVE-2014-5031)

According to its banner, the version of CUPS installed on the remote host is prior to version 1.7.2. It is, therefore, affected by a cross-site scripting vulnerability.

A flaw exists with the is_path_absolute function within the scheduler/client.cscript. This could allow a context-dependent attacker, with a specially crafted request, to execute arbitrary script code within the browser and server trust relationship.

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

This update fixes possible cross-site scripting issue in CUPS web interface and includes some bug fixes from Fedora 20.

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

Upstream bug-fix release, which among others fixes possible cross-site scripting issue in CUPS web interface.

  - https://cups.org/blog.php?L717

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

Updated cups packages fix security vulnerability :

Cross-site scripting (XSS) vulnerability in scheduler/client.c in Common Unix Printing System (CUPS) before 1.7.2 allows remote attackers to inject arbitrary web script or HTML via the URL path, related to the is_path_absolute function (CVE-2014-2856).

The remote Oracle Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2014-1388 advisory.

    - Applied upstream patch to fix CVE-2014-5029 (bug #1122600),       CVE-2014-5030 (bug #1128764), CVE-2014-5031 (bug #1128767).
    - fix patch for CVE-2014-3537 (bug #1117794)
    - CVE-2014-2856: cross-site scripting flaw (bug #1117798)
    - CVE-2014-3537: insufficient checking leads to privilege escalation (bug #1117794)

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

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

Updated cups packages that fix multiple security issues and several bugs are now available for Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

CUPS provides a portable printing layer for Linux, UNIX, and similar operating systems.

A cross-site scripting (XSS) flaw was found in the CUPS web interface.
An attacker could use this flaw to perform a cross-site scripting attack against users of the CUPS web interface. (CVE-2014-2856)

It was discovered that CUPS allowed certain users to create symbolic links in certain directories under /var/cache/cups/. A local user with the 'lp' group privileges could use this flaw to read the contents of arbitrary files on the system or, potentially, escalate their privileges on the system. (CVE-2014-3537, CVE-2014-5029, CVE-2014-5030, CVE-2014-5031)

The CVE-2014-3537 issue was discovered by Francisco Alonso of Red Hat Product Security.

These updated cups packages also include several bug fixes. Space precludes documenting all of these changes in this advisory. Users are directed to the Red Hat Enterprise Linux 6.6 Technical Notes, linked to in the References section, for information on the most significant of these changes.

All cups users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. After installing this update, the cupsd daemon will be restarted automatically.

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

  - A cross-site scripting flaw was found in the cups web     templating engine. An attacker could use this flaw to     bypass the default configuration settings that bind the     CUPS scheduler to the 'localhost' or loopback     interface.(CVE-2015-1159)

  - It was discovered that CUPS allowed certain users to     create symbolic links in certain directories under     /var/cache/cups/. A local user with the 'lp' group     privileges could use this flaw to read the contents of     arbitrary files on the system or, potentially, escalate     their privileges on the system.(CVE-2014-5031)

  - A string reference count bug was found in cupsd,     causing premature freeing of string objects. An     attacker could submit a malicious print job that     exploits this flaw to dismantle ACLs protecting     privileged operations, allowing a replacement     configuration file to be uploaded, which in turn     allowed the attacker to run arbitrary code on the CUPS     server.(CVE-2015-1158)

  - A cross-site scripting (XSS) flaw was found in the CUPS     web interface. An attacker could use this flaw to     perform a cross-site scripting attack against users of     the CUPS web interface.(CVE-2014-2856)

  - A localhost.localdomain whitelist entry in valid_host()     in scheduler/client.c in CUPS before 2.2.2 allows     remote attackers to execute arbitrary IPP commands by     sending POST requests to the CUPS daemon in conjunction     with DNS rebinding. The localhost.localdomain name is     often resolved via a DNS server (neither the OS nor the     web browser is responsible for ensuring that     localhost.localdomain is 127.0.0.1).(CVE-2017-18190)

  - It was discovered that CUPS allowed certain users to     create symbolic links in certain directories under     /var/cache/cups/. A local user with the 'lp' group     privileges could use this flaw to read the contents of     arbitrary files on the system or, potentially, escalate     their privileges on the system.(CVE-2014-5030)

  - It was discovered that CUPS allowed certain users to     create symbolic links in certain directories under     /var/cache/cups/. A local user with the 'lp' group     privileges could use this flaw to read the contents of     arbitrary files on the system or, potentially, escalate     their privileges on the system.(CVE-2014-3537)

  - An integer overflow flaw, leading to a heap-based     buffer overflow, was found in the way CUPS handled     compressed raster image files. An attacker could create     a specially crafted image file that, when passed via     the CUPS Raster filter, could cause the CUPS filter to     crash.(CVE-2014-9679)

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.

Updated cups packages fix security vulnerabilities :

Cross-site scripting (XSS) vulnerability in scheduler/client.c in Common Unix Printing System (CUPS) before 1.7.2 allows remote attackers to inject arbitrary web script or HTML via the URL path, related to the is_path_absolute function (CVE-2014-2856).

In CUPS before 1.7.4, a local user with privileges of group=lp can write symbolic links in the rss directory and use that to gain '@SYSTEM' group privilege with cupsd (CVE-2014-3537).

It was discovered that the web interface in CUPS incorrectly validated permissions on rss files and directory index files. A local attacker could possibly use this issue to bypass file permissions and read arbitrary files, possibly leading to a privilege escalation (CVE-2014-5029, CVE-2014-5030, CVE-2014-5031).

A malformed file with an invalid page header and compressed raster data can trigger a buffer overflow in cupsRasterReadPixels (CVE-2014-9679).

The remote MiracleLinux 4 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2014-674:02 advisory.

    Description :
    The Common UNIX Printing System provides a portable printing layer for     UNIX operating systems. It has been developed by Easy Software Products     to promote a standard printing solution for all UNIX vendors and users.
    CUPS provides the System V and Berkeley command-line interfaces.
    Security issues fixed with this release:
    CVE-2014-2856     Cross-site scripting (XSS) vulnerability in scheduler/client.c in Common Unix Printing System (CUPS)     before 1.7.2 allows remote attackers to inject arbitrary web script or HTML via the URL path, related to     the is_path_absolute function.
    CVE-2014-3537     The web interface in CUPS before 1.7.4 allows local users in the lp group to read arbitrary files via a     symlink attack on a file in /var/cache/cups/rss/.
    CVE-2014-5029     The web interface in CUPS 1.7.4 allows local users in the lp group to read arbitrary files via a symlink     attack on a file in /var/cache/cups/rss/ and language[0] set to null. NOTE: this vulnerability exists     because of an incomplete fix for CVE-2014-3537.
    CVE-2014-5030     CUPS before 2.0 allows local users to read arbitrary files via a symlink attack on (1) index.html, (2)     index.class, (3) index.pl, (4) index.php, (5) index.pyc, or (6) index.py.
    CVE-2014-5031     The web interface in CUPS before 2.0 does not check that files have world-readable permissions, which     allows remote attackers to obtains sensitive information via unspecified vectors.
    Fixed bugs:
    These updated cups packages also include several bug fixes.
    Please see changelog for more information.

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.

A cross-site scripting (XSS) flaw was found in the CUPS web interface.
An attacker could use this flaw to perform a cross-site scripting attack against users of the CUPS web interface. (CVE-2014-2856)

It was discovered that CUPS allowed certain users to create symbolic links in certain directories under /var/cache/cups/. A local user with the 'lp' group privileges could use this flaw to read the contents of arbitrary files on the system or, potentially, escalate their privileges on the system. (CVE-2014-3537, CVE-2014-5029, CVE-2014-5030, CVE-2014-5031)

After installing this update, the cupsd daemon will be restarted automatically.

ID	名前	製品	ファミリー	公開日	更新日	深刻度
73709	Ubuntu 10.04 LTS / 12.04 LTS / 12.10 / 13.10 : cups vulnerability (USN-2172-1)	Nessus	Ubuntu Local Security Checks	2014/4/25	2021/1/19	medium
78781	Amazon Linux AMI : cups (ALAS-2014-438)	Nessus	Amazon Linux Local Security Checks	2014/11/3	2018/4/18	medium
73734	CUPS < 1.7.2 is_path_absolute Function XSS	Nessus	Misc.	2014/4/28	2018/11/15	medium
73746	Fedora 19 : cups-1.6.4-5.fc19 (2014-4384)	Nessus	Fedora Local Security Checks	2014/4/29	2021/1/11	medium
73774	Fedora 20 : cups-1.7.2-1.fc20 (2014-5079)	Nessus	Fedora Local Security Checks	2014/4/30	2021/1/11	medium
74070	Mandriva Linux Security Advisory : cups (MDVSA-2014:091)	Nessus	Mandriva Local Security Checks	2014/5/19	2021/1/6	medium
78522	Oracle Linux 6 : cups (ELSA-2014-1388)	Nessus	Oracle Linux Local Security Checks	2014/10/17	2024/10/22	medium
79177	CentOS 6 : cups (CESA-2014:1388)	Nessus	CentOS Local Security Checks	2014/11/12	2021/1/4	medium
124935	EulerOS Virtualization 3.0.1.0 : cups (EulerOS-SA-2019-1432)	Nessus	Huawei Local Security Checks	2019/5/14	2024/5/23	high
82361	Mandriva Linux Security Advisory : cups (MDVSA-2015:108)	Nessus	Mandriva Local Security Checks	2015/3/30	2021/1/14	medium
289862	MiracleLinux 4 : cups-1.4.2-67.0.1.AXS4 (AXSA:2014-674:02)	Nessus	Miracle Linux Local Security Checks	2026/1/16	2026/1/16	medium
78842	Scientific Linux Security Update : cups on SL6.x i386/x86_64 (20141014)	Nessus	Scientific Linux Local Security Checks	2014/11/4	2021/1/14	medium

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