Multiple integer overflows in libXpm before 3.5.12, when a program requests parsing XPM extensions on a 64-bit platform, allow remote attackers to cause a denial of service (out-of-bounds write) or execute arbitrary code via (1) the number of extensions or (2) their concatenated length in a crafted XPM file, which triggers a heap-based buffer overflow.

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

  - Multiple integer overflows in libXpm before 3.5.12, when a program requests parsing XPM extensions on a     64-bit platform, allow remote attackers to cause a denial of service (out-of-bounds write) or execute     arbitrary code via (1) the number of extensions or (2) their concatenated length in a crafted XPM file,     which triggers a heap-based buffer overflow. (CVE-2016-10164)

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.

According to the versions of the libXpm, libXdmcp, libICE packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - An integer overflow flaw leading to a heap-based buffer     overflow was found in libXpm. An attacker could use     this flaw to crash an application using libXpm via a     specially crafted XPM file. (CVE-2016-10164)

  - It was discovered that libXdmcp used weak entropy to     generate session keys. On a multi-user system using     xdmcp, a local attacker could potentially use     information available from the process list to brute     force the key, allowing them to hijack other users'     sessions. (CVE-2017-2625)

  - It was discovered that libICE used a weak entropy to     generate keys. A local attacker could potentially use     this flaw for session hijacking using the information     available from the process list. (CVE-2017-2626)

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.

An update is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Moderate. 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.

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

The following packages have been upgraded to a later upstream version:
libX11 (1.6.5), libXaw (1.0.13), libXdmcp (1.1.2), libXfixes (5.0.3), libXfont (1.5.2), libXi (1.7.9), libXpm (3.5.12), libXrandr (1.5.1), libXrender (0.9.10), libXt (1.1.5), libXtst (1.2.3), libXv (1.0.11), libXvMC (1.0.10), libXxf86vm (1.1.4), libdrm (2.4.74), libepoxy (1.3.1), libevdev (1.5.6), libfontenc (1.1.3), libvdpau (1.1.1), libwacom (0.24), libxcb (1.12), libxkbfile (1.0.9), mesa (17.0.1), mesa-private-llvm (3.9.1), xcb-proto (1.12), xkeyboard-config (2.20), xorg-x11-proto-devel (7.7). (BZ#1401667, BZ#1401668, BZ#1401669, BZ#1401670, BZ#1401671, BZ#1401672, BZ#1401673, BZ#1401675, BZ# 1401676, BZ#1401677, BZ#1401678, BZ#1401679, BZ#1401680, BZ#1401681, BZ# 1401682, BZ#1401683, BZ#1401685, BZ#1401690, BZ#1401752, BZ#1401753, BZ# 1401754, BZ#1402560, BZ#1410477, BZ#1411390, BZ#1411392, BZ#1411393, BZ# 1411452, BZ#1420224)

Security Fix(es) :

* An integer overflow flaw leading to a heap-based buffer overflow was found in libXpm. An attacker could use this flaw to crash an application using libXpm via a specially crafted XPM file.
(CVE-2016-10164)

* It was discovered that libXdmcp used weak entropy to generate session keys. On a multi-user system using xdmcp, a local attacker could potentially use information available from the process list to brute force the key, allowing them to hijack other users' sessions.
(CVE-2017-2625)

* It was discovered that libICE used a weak entropy to generate keys.
A local attacker could potentially use this flaw for session hijacking using the information available from the process list. (CVE-2017-2626)

Red Hat would like to thank Eric Sesterhenn (X41 D-Sec GmbH) for reporting CVE-2017-2625 and CVE-2017-2626.

Additional Changes :

For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.4 Release Notes linked from the References section.

The following packages have been upgraded to a later upstream version:
libX11 (1.6.5), libXaw (1.0.13), libXdmcp (1.1.2), libXfixes (5.0.3), libXfont (1.5.2), libXi (1.7.9), libXpm (3.5.12), libXrandr (1.5.1), libXrender (0.9.10), libXt (1.1.5), libXtst (1.2.3), libXv (1.0.11), libXvMC (1.0.10), libXxf86vm (1.1.4), libdrm (2.4.74), libepoxy (1.3.1), libevdev (1.5.6), libfontenc (1.1.3), libvdpau (1.1.1), libwacom (0.24), libxcb (1.12), libxkbfile (1.0.9), mesa (17.0.1), mesa-private-llvm (3.9.1), xcb-proto (1.12), xkeyboard-config (2.20), xorg-x11-proto-devel (7.7).

Security Fix(es) :

  - An integer overflow flaw leading to a heap-based buffer     overflow was found in libXpm. An attacker could use this     flaw to crash an application using libXpm via a     specially crafted XPM file. (CVE-2016-10164)

  - It was discovered that libXdmcp used weak entropy to     generate session keys. On a multi-user system using     xdmcp, a local attacker could potentially use     information available from the process list to brute     force the key, allowing them to hijack other users'     sessions. (CVE-2017-2625)

  - It was discovered that libICE used a weak entropy to     generate keys. A local attacker could potentially use     this flaw for session hijacking using the information     available from the process list. (CVE-2017-2626)

From Red Hat Security Advisory 2017:1865 :

An update is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Moderate. 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.

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

The following packages have been upgraded to a later upstream version:
libX11 (1.6.5), libXaw (1.0.13), libXdmcp (1.1.2), libXfixes (5.0.3), libXfont (1.5.2), libXi (1.7.9), libXpm (3.5.12), libXrandr (1.5.1), libXrender (0.9.10), libXt (1.1.5), libXtst (1.2.3), libXv (1.0.11), libXvMC (1.0.10), libXxf86vm (1.1.4), libdrm (2.4.74), libepoxy (1.3.1), libevdev (1.5.6), libfontenc (1.1.3), libvdpau (1.1.1), libwacom (0.24), libxcb (1.12), libxkbfile (1.0.9), mesa (17.0.1), mesa-private-llvm (3.9.1), xcb-proto (1.12), xkeyboard-config (2.20), xorg-x11-proto-devel (7.7). (BZ#1401667, BZ#1401668, BZ#1401669, BZ#1401670, BZ#1401671, BZ#1401672, BZ#1401673, BZ#1401675, BZ# 1401676, BZ#1401677, BZ#1401678, BZ#1401679, BZ#1401680, BZ#1401681, BZ# 1401682, BZ#1401683, BZ#1401685, BZ#1401690, BZ#1401752, BZ#1401753, BZ# 1401754, BZ#1402560, BZ#1410477, BZ#1411390, BZ#1411392, BZ#1411393, BZ# 1411452, BZ#1420224)

Security Fix(es) :

* An integer overflow flaw leading to a heap-based buffer overflow was found in libXpm. An attacker could use this flaw to crash an application using libXpm via a specially crafted XPM file.
(CVE-2016-10164)

* It was discovered that libXdmcp used weak entropy to generate session keys. On a multi-user system using xdmcp, a local attacker could potentially use information available from the process list to brute force the key, allowing them to hijack other users' sessions.
(CVE-2017-2625)

* It was discovered that libICE used a weak entropy to generate keys.
A local attacker could potentially use this flaw for session hijacking using the information available from the process list. (CVE-2017-2626)

Red Hat would like to thank Eric Sesterhenn (X41 D-Sec GmbH) for reporting CVE-2017-2625 and CVE-2017-2626.

Additional Changes :

For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.4 Release Notes linked from the References section.

This update for libXpm fixes the following issues :

  - A heap overflow in XPM handling could be used by     attackers supplying XPM files to crash or potentially     execute code. (bsc#1021315)

This update was imported from the SUSE:SLE-12:Update update project.

This update for xorg-x11-libXpm fixes the following security issue :

  - A heap overflow in XPM handling could be used by     attackers supplying XPM files to crash or potentially     execute code. (bsc#1021315)

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.

This update for libXpm fixes the following issues :

  - A heap overflow in XPM handling could be used by     attackers supplying XPM files to crash or potentially     execute code. (bsc#1021315)

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.

It was discovered that libXpm incorrectly handled certain XPM files.
If a user or automated system were tricked into opening a specially crafted XPM file, a remote attacker could use this issue to cause libXpm to crash, resulting in a denial of service, or possibly execute arbitrary code.

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.

Security fix for CVE-2016-10164

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

The remote host is affected by the vulnerability described in GLSA-201701-72 (libXpm: Remote execution of arbitrary code)

    An integer overflow was discovered in libXpm&rsquo;s src/CrDatFrI.c file.
      On 64 bit systems, this allows an overflow to occur on 32 bit integers       while parsing XPM extensions in a file.
  Impact :

    A remote attacker, by enticing a user to process a specially crafted XPM       file, could execute arbitrary code with the privileges of the process or       cause a Denial of Service condition.
  Workaround :

    There is no known workaround at this time.

Tobias Stoeckmann discovered that the libXpm library contained two integer overflow flaws, leading to a heap out-of-bounds write, while parsing XPM extensions in a file. An attacker can provide a specially crafted XPM file that, when processed by an application using the libXpm library, would cause a denial-of-service against the application, or potentially, the execution of arbitrary code with the privileges of the user running the application.

Tobias Stoeckmann discovered a vulnerability in the libXpm library that could cause a malicious attacker to execute arbitrary code via a specially crafted XPM file.

For Debian 7 'Wheezy', these problems have been fixed in version 1:3.5.10-1+deb7u1.

We recommend that you upgrade your libxpm packages.

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

ID	Name	Product	Family	Severity
191881	EulerOS 2.0 SP8 : motif (EulerOS-SA-2024-1283)	Nessus	Huawei Local Security Checks	critical
103070	EulerOS 2.0 SP2 : libXpm, libXdmcp, libICE (EulerOS-SA-2017-1212)	Nessus	Huawei Local Security Checks	critical
103069	EulerOS 2.0 SP1 : libXpm, libXdmcp, libICE (EulerOS-SA-2017-1211)	Nessus	Huawei Local Security Checks	critical
102740	CentOS 7 : libICE / libX11 / libXaw / libXcursor / libXdmcp / libXfixes / libXfont / libXfont2 / etc (CESA-2017:1865)	Nessus	CentOS Local Security Checks	critical
102636	Scientific Linux Security Update : X.org X11 libraries on SL7.x x86_64 (20170801)	Nessus	Scientific Linux Local Security Checks	critical
102340	Oracle Linux 7 : X.org / X11 / libraries (ELSA-2017-1865)	Nessus	Oracle Linux Local Security Checks	critical
102147	RHEL 7 : X.org X11 libraries (RHSA-2017:1865)	Nessus	Red Hat Local Security Checks	critical
97370	openSUSE Security Update : libXpm (openSUSE-2017-292)	Nessus	SuSE Local Security Checks	critical
97204	SUSE SLES11 Security Update : xorg-x11-libXpm (SUSE-SU-2017:0470-1)	Nessus	SuSE Local Security Checks	critical
97202	SUSE SLED12 / SLES12 Security Update : libXpm (SUSE-SU-2017:0467-1)	Nessus	SuSE Local Security Checks	critical
96954	Ubuntu 14.04 LTS / 16.04 LTS : libXpm vulnerability (USN-3185-1)	Nessus	Ubuntu Local Security Checks	critical
96891	Fedora 24 : libXpm (2017-6d6e2bfd1a)	Nessus	Fedora Local Security Checks	critical
96858	GLSA-201701-72 : libXpm: Remote execution of arbitrary code	Nessus	Gentoo Local Security Checks	critical
96819	Debian DSA-3772-1 : libxpm - security update	Nessus	Debian Local Security Checks	critical
96816	Debian DLA-801-1 : libxpm security update	Nessus	Debian Local Security Checks	critical

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CVE-2016-10164

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