用于修复 CVE-2013-1991 的更新

请注意，Tenable Network Security 已直接从 Fedora 安全公告中提取上述描述块。Tenable 已尝试在不引入其他问题的情况下尽可能进行了自动整理和排版。

Updated X11 client libraries packages that fix multiple security issues, several bugs, and add various enhancements 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.

The X11 (Xorg) libraries provide library routines that are used within all X Window applications.

Multiple integer overflow flaws, leading to heap-based buffer overflows, were found in the way various X11 client libraries handled certain protocol data. An attacker able to submit invalid protocol data to an X11 server via a malicious X11 client could use either of these flaws to potentially escalate their privileges on the system.
(CVE-2013-1981, CVE-2013-1982, CVE-2013-1983, CVE-2013-1984, CVE-2013-1985, CVE-2013-1986, CVE-2013-1987, CVE-2013-1988, CVE-2013-1989, CVE-2013-1990, CVE-2013-1991, CVE-2013-2003, CVE-2013-2062, CVE-2013-2064)

Multiple array index errors, leading to heap-based buffer out-of-bounds write flaws, were found in the way various X11 client libraries handled data returned from an X11 server. A malicious X11 server could possibly use this flaw to execute arbitrary code with the privileges of the user running an X11 client. (CVE-2013-1997, CVE-2013-1998, CVE-2013-1999, CVE-2013-2000, CVE-2013-2001, CVE-2013-2002, CVE-2013-2066)

A buffer overflow flaw was found in the way the XListInputDevices() function of X.Org X11's libXi runtime library handled signed numbers.
A malicious X11 server could possibly use this flaw to execute arbitrary code with the privileges of the user running an X11 client.
(CVE-2013-1995)

A flaw was found in the way the X.Org X11 libXt runtime library used uninitialized pointers. A malicious X11 server could possibly use this flaw to execute arbitrary code with the privileges of the user running an X11 client. (CVE-2013-2005)

Two stack-based buffer overflow flaws were found in the way libX11, the Core X11 protocol client library, processed certain user-specified files. A malicious X11 server could possibly use this flaw to crash an X11 client via a specially crafted file. (CVE-2013-2004)

The xkeyboard-config package has been upgraded to upstream version 2.11, which provides a number of bug fixes and enhancements over the previous version. (BZ#1077471)

This update also fixes the following bugs :

* Previously, updating the mesa-libGL package did not update the libX11 package, although it was listed as a dependency of mesa-libGL.
This bug has been fixed and updating mesa-libGL now updates all dependent packages as expected. (BZ#1054614)

* Previously, closing a customer application could occasionally cause the X Server to terminate unexpectedly. After this update, the X Server no longer hangs when a user closes a customer application.
(BZ#971626)

All X11 client libraries users are advised to upgrade to these updated packages, which correct these issues and add these enhancements.

Ilja van Sprundel of IOActive discovered several security issues in multiple components of the X.org graphics stack and the related libraries: Various integer overflows, sign handling errors in integer conversions, buffer overflows, memory corruption and missing input sanitising may lead to privilege escalation or denial of service.

This update of xorg-x11-libs fixes several integer and buffer overflow issues. (bnc#815451, bnc#821663)

update to fix CVE-2013-1991

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.

This update of libXxf86dga fixes several buffer and integer overflow issues.

  -     U_0001-integer-overflow-in-XDGAQueryModes-CVE-2013-1991-     1-2.patch,     U_0002-integer-overflow-underflow-in-XDGASetMode-CVE-201     3-1.patch

  - integer overflow in XDGAQueryModes(); integer overflow &     underflow in XDGASetMode() [CVE-2013-1991] (bnc#821663,     bnc#815451)

  -     U_0001-buffer-overflow-in-XDGAQueryModes-CVE-2013-2000-1
    -2.patch,     U_0002-buffer-overflow-in-XDGASetMode-CVE-2013-2000-2-2.
    patch

  - buffer overflow in XDGAQueryModes(), XDGASetMode()     [CVE-2013-2000] (bnc#821663, bnc#815451)

The remote Redhat Enterprise Linux 5 host has one or more packages installed that are affected by multiple vulnerabilities that have been acknowledged by the vendor but will not be patched.

  - libXxf86dga: Array Index error leading to heap-based OOB write (CVE-2013-2000)

  - Multiple integer overflows in X.org libXxf86dga 1.1.3 and earlier allow X servers to trigger allocation of     insufficient memory and a buffer overflow via vectors related to the (1) XDGAQueryModes and (2)     XDGASetMode functions. (CVE-2013-1991)

Note that Nessus has not tested for these issues but has instead relied on the package manager's report that the package is installed.

ID	名前	製品	ファミリー	公開日	更新日	深刻度
67356	Fedora 18：libXxf86dga-1.1.3-5.20130524gita8dc6be32.fc18 (2013-9177)	Nessus	Fedora Local Security Checks	2013/7/12	2021/1/11	medium
78411	RHEL 6 : X11 client libraries (RHSA-2014:1436)	Nessus	Red Hat Local Security Checks	2014/10/14	2021/1/14	medium
66574	Debian DSA-2690-1 : libxxf86dga - several vulnerabilities	Nessus	Debian Local Security Checks	2013/5/24	2021/1/11	medium
67106	SuSE 11.2 Security Update : xorg-x11-libs (SAT Patch Number 7846)	Nessus	SuSE Local Security Checks	2013/6/29	2021/1/19	medium
67356	Fedora 18 : libXxf86dga-1.1.3-5.20130524gita8dc6be32.fc18 (2013-9177)	Nessus	Fedora Local Security Checks	2013/7/12	2021/1/11	medium
75045	openSUSE Security Update : libXxf86dga (openSUSE-SU-2013:1030-1)	Nessus	SuSE Local Security Checks	2014/6/13	2021/1/19	medium
199655	RHEL 5 : libxxf86dga (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	2024/6/3	2024/6/3	high

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