ID CVE-2016-7953
Summary Buffer underflow in X.org libXvMC before 1.0.10 allows remote X servers to have unspecified impact via an empty string.
References
Vulnerable Configurations
  • Fedora 25
    cpe:2.3:o:fedoraproject:fedora:25
  • Fedora 24
    cpe:2.3:o:fedoraproject:fedora:24
  • cpe:2.3:a:x.org:libxvmc:1.0.9
    cpe:2.3:a:x.org:libxvmc:1.0.9
CVSS
Base: 7.5 (as of 14-12-2016 - 18:11)
Impact:
Exploitability:
CWE CWE-119
CAPEC
  • Buffer Overflow via Environment Variables
    This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
  • Overflow Buffers
    Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
  • Client-side Injection-induced Buffer Overflow
    This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service.
  • Filter Failure through Buffer Overflow
    In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).
  • MIME Conversion
    An attacker exploits a weakness in the MIME conversion routine to cause a buffer overflow and gain control over the mail server machine. The MIME system is designed to allow various different information formats to be interpreted and sent via e-mail. Attack points exist when data are converted to MIME compatible format and back.
  • Overflow Binary Resource File
    An attack of this type exploits a buffer overflow vulnerability in the handling of binary resources. Binary resources may include music files like MP3, image files like JPEG files, and any other binary file. These attacks may pass unnoticed to the client machine through normal usage of files, such as a browser loading a seemingly innocent JPEG file. This can allow the attacker access to the execution stack and execute arbitrary code in the target process. This attack pattern is a variant of standard buffer overflow attacks using an unexpected vector (binary files) to wrap its attack and open up a new attack vector. The attacker is required to either directly serve the binary content to the victim, or place it in a locale like a MP3 sharing application, for the victim to download. The attacker then is notified upon the download or otherwise locates the vulnerability opened up by the buffer overflow.
  • Buffer Overflow via Symbolic Links
    This type of attack leverages the use of symbolic links to cause buffer overflows. An attacker can try to create or manipulate a symbolic link file such that its contents result in out of bounds data. When the target software processes the symbolic link file, it could potentially overflow internal buffers with insufficient bounds checking.
  • Overflow Variables and Tags
    This type of attack leverages the use of tags or variables from a formatted configuration data to cause buffer overflow. The attacker crafts a malicious HTML page or configuration file that includes oversized strings, thus causing an overflow.
  • Buffer Overflow via Parameter Expansion
    In this attack, the target software is given input that the attacker knows will be modified and expanded in size during processing. This attack relies on the target software failing to anticipate that the expanded data may exceed some internal limit, thereby creating a buffer overflow.
  • Buffer Overflow in an API Call
    This attack targets libraries or shared code modules which are vulnerable to buffer overflow attacks. An attacker who has access to an API may try to embed malicious code in the API function call and exploit a buffer overflow vulnerability in the function's implementation. All clients that make use of the code library thus become vulnerable by association. This has a very broad effect on security across a system, usually affecting more than one software process.
  • Buffer Overflow in Local Command-Line Utilities
    This attack targets command-line utilities available in a number of shells. An attacker can leverage a vulnerability found in a command-line utility to escalate privilege to root.
Access
VectorComplexityAuthentication
NETWORK LOW NONE
Impact
ConfidentialityIntegrityAvailability
PARTIAL PARTIAL PARTIAL
nessus via4
  • NASL family SuSE Local Security Checks
    NASL id SUSE_SU-2016-2505-1.NASL
    description This update for the X Window System client libraries fixes a class of privilege escalation issues. A malicious X Server could send specially crafted data to X clients, which allowed for triggering crashes, or privilege escalation if this relationship was untrusted or crossed user or permission level boundaries. libX11, libXfixes, libXi, libXrandr, libXrender, libXtst, libXv, libXvMC were fixed, specifically: libX11 : - CVE-2016-7942: insufficient validation of data from the X server allowed out of boundary memory read (bsc#1002991) libXfixes : - CVE-2016-7944: insufficient validation of data from the X server can cause an integer overflow on 32 bit architectures (bsc#1002995) libXi : - CVE-2016-7945, CVE-2016-7946: insufficient validation of data from the X server can cause out of boundary memory access or endless loops (Denial of Service) (bsc#1002998) libXtst : - CVE-2016-7951, CVE-2016-7952: insufficient validation of data from the X server can cause out of boundary memory access or endless loops (Denial of Service) (bsc#1003012) libXv : - CVE-2016-5407: insufficient validation of data from the X server can cause out of boundary memory and memory corruption (bsc#1003017) libXvMC : - CVE-2016-7953: insufficient validation of data from the X server can cause a one byte buffer read underrun (bsc#1003023) libXrender : - CVE-2016-7949, CVE-2016-7950: insufficient validation of data from the X server can cause out of boundary memory writes (bsc#1003002) libXrandr : - CVE-2016-7947, CVE-2016-7948: insufficient validation of data from the X server can cause out of boundary memory writes (bsc#1003000) 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.
    last seen 2019-02-21
    modified 2018-11-29
    plugin id 94036
    published 2016-10-13
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=94036
    title SUSE SLED12 / SLES12 Security Update : X Window System client libraries (SUSE-SU-2016:2505-1)
  • NASL family SuSE Local Security Checks
    NASL id OPENSUSE-2016-1214.NASL
    description This update for the X Window System client libraries fixes a class of privilege escalation issues. A malicious X Server could send specially crafted data to X clients, which allowed for triggering crashes, or privilege escalation if this relationship was untrusted or crossed user or permission level boundaries. libX11, libXfixes, libXi, libXrandr, libXrender, libXtst, libXv, libXvMC were fixed, specifically : libX11 : - CVE-2016-7942: insufficient validation of data from the X server allowed out of boundary memory read (bsc#1002991) libXfixes : - CVE-2016-7944: insufficient validation of data from the X server can cause an integer overflow on 32 bit architectures (bsc#1002995) libXi : - CVE-2016-7945, CVE-2016-7946: insufficient validation of data from the X server can cause out of boundary memory access or endless loops (Denial of Service) (bsc#1002998) libXtst : - CVE-2016-7951, CVE-2016-7952: insufficient validation of data from the X server can cause out of boundary memory access or endless loops (Denial of Service) (bsc#1003012) libXv : - CVE-2016-5407: insufficient validation of data from the X server can cause out of boundary memory and memory corruption (bsc#1003017) libXvMC : - CVE-2016-7953: insufficient validation of data from the X server can cause a one byte buffer read underrun (bsc#1003023) libXrender : - CVE-2016-7949, CVE-2016-7950: insufficient validation of data from the X server can cause out of boundary memory writes (bsc#1003002) libXrandr : - CVE-2016-7947, CVE-2016-7948: insufficient validation of data from the X server can cause out of boundary memory writes (bsc#1003000) This update was imported from the SUSE:SLE-12:Update update project.
    last seen 2019-02-21
    modified 2016-12-21
    plugin id 94220
    published 2016-10-24
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=94220
    title openSUSE Security Update : X Window System client libraries (openSUSE-2016-1214)
  • NASL family SuSE Local Security Checks
    NASL id SUSE_SU-2016-2828-1.NASL
    description This update for the X Window System client libraries fixes a class of privilege escalation issues. A malicious X Server could send specially crafted data to X clients, which allowed for triggering crashes, or privilege escalation if this relationship was untrusted or crossed user or permission level boundaries. libX11, libXfixes, libXi, libXrandr, libXrender, libXtst, libXv, libXvMC were fixed, specifically: libX11 : - CVE-2016-7942: insufficient validation of data from the X server allowed out of boundary memory read (bsc#1002991) libXfixes : - CVE-2016-7944: insufficient validation of data from the X server can cause an integer overflow on 32 bit architectures (bsc#1002995) libXi : - CVE-2016-7945, CVE-2016-7946: insufficient validation of data from the X server can cause out of boundary memory access or endless loops (Denial of Service) (bsc#1002998) libXtst : - CVE-2016-7951, CVE-2016-7952: insufficient validation of data from the X server can cause out of boundary memory access or endless loops (Denial of Service) (bsc#1003012) libXv : - CVE-2016-5407: insufficient validation of data from the X server can cause out of boundary memory and memory corruption (bsc#1003017) libXvMC : - CVE-2016-7953: insufficient validation of data from the X server can cause a one byte buffer read underrun (bsc#1003023) libXrender : - CVE-2016-7949, CVE-2016-7950: insufficient validation of data from the X server can cause out of boundary memory writes (bsc#1003002) libXrandr : - CVE-2016-7947, CVE-2016-7948: insufficient validation of data from the X server can cause out of boundary memory writes (bsc#1003000) 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.
    last seen 2019-02-21
    modified 2018-11-29
    plugin id 94939
    published 2016-11-17
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=94939
    title SUSE SLED12 / SLES12 Security Update : X Window System client libraries (SUSE-SU-2016:2828-1)
  • NASL family Fedora Local Security Checks
    NASL id FEDORA_2016-D286FFB801.NASL
    description Security fix for CVE-2016-7953 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.
    last seen 2019-02-21
    modified 2016-12-21
    plugin id 94490
    published 2016-11-03
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=94490
    title Fedora 23 : libXvMC (2016-d286ffb801)
  • NASL family Fedora Local Security Checks
    NASL id FEDORA_2016-A236CB3315.NASL
    description Security fix for CVE-2016-7953 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.
    last seen 2019-02-21
    modified 2016-12-21
    plugin id 93925
    published 2016-10-10
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=93925
    title Fedora 24 : libXvMC (2016-a236cb3315)
  • NASL family Debian Local Security Checks
    NASL id DEBIAN_DLA-671.NASL
    description CVE-2016-7953 If an empty string is received from an x-server, do not underrun the buffer by accessing 'rep.nameLen - 1' unconditionally, which could end up being -1. For Debian 7 'Wheezy', these problems have been fixed in version 2:1.0.7-1+deb7u3. We recommend that you upgrade your libxvmc 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.
    last seen 2019-02-21
    modified 2018-07-10
    plugin id 94145
    published 2016-10-20
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=94145
    title Debian DLA-671-1 : libxvmc security update
  • NASL family SuSE Local Security Checks
    NASL id OPENSUSE-2016-1424.NASL
    description This update for libXvMC fixes the following security issue : - insufficient validation of data from the X server could cause a one byte buffer read underrun (boo#1003023, CVE-2016-7953)
    last seen 2019-02-21
    modified 2016-12-21
    plugin id 95648
    published 2016-12-08
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=95648
    title openSUSE Security Update : libXvMC (openSUSE-2016-1424)
  • NASL family SuSE Local Security Checks
    NASL id SUSE_SU-2016-3189-1.NASL
    description This update for xorg-x11-libs fixes the following issues : - insufficient validation of data from the X server can cause a one byte buffer read underrun (bsc#1003023, CVE-2016-7953) - insufficient validation of data from the X server can cause out of boundary memory access or endless loops (Denial of Service) (bsc#1003012, CVE-2016-7951, CVE-2016-7952) - insufficient validation of data from the X server can cause out of boundary memory writes (bsc#1003000, CVE-2016-7947, CVE-2016-7948) - insufficient validation of data from the X server can cause out of boundary memory access or endless loops (Denial of Service). (bsc#1002998, CVE-2016-7945, CVE-2016-7946) 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.
    last seen 2019-02-21
    modified 2018-11-30
    plugin id 96034
    published 2016-12-20
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=96034
    title SUSE SLES11 Security Update : xorg-x11-libs (SUSE-SU-2016:3189-1)
  • NASL family Fedora Local Security Checks
    NASL id FEDORA_2016-37B9932690.NASL
    description Security fix for CVE-2016-7953 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.
    last seen 2019-02-21
    modified 2016-12-21
    plugin id 94790
    published 2016-11-15
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=94790
    title Fedora 25 : libXvMC (2016-37b9932690)
  • NASL family Slackware Local Security Checks
    NASL id SLACKWARE_SSA_2016-305-02.NASL
    description New x11 packages are available for Slackware 13.0, 13.1, 13.37, 14.0, 14.1, 14.2, and -current to fix security issues.
    last seen 2019-02-21
    modified 2017-09-21
    plugin id 94439
    published 2016-11-01
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=94439
    title Slackware 13.0 / 13.1 / 13.37 / 14.0 / 14.1 / 14.2 / current : x11 (SSA:2016-305-02)
  • NASL family Gentoo Local Security Checks
    NASL id GENTOO_GLSA-201704-03.NASL
    description The remote host is affected by the vulnerability described in GLSA-201704-03 (X.Org: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in X.Org server and libraries. Please review the CVE identifiers referenced below for details. Impact : A local or remote users can utilize the vulnerabilities to attach to the X.Org session as a user and execute arbitrary code. Workaround : There is no known workaround at this time.
    last seen 2019-02-21
    modified 2017-04-11
    plugin id 99276
    published 2017-04-11
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=99276
    title GLSA-201704-03 : X.Org: Multiple vulnerabilities
refmap via4
bid 93371
confirm https://cgit.freedesktop.org/xorg/lib/libXvMC/commit/?id=2cd95e7da8367cccdcdd5c9b160012d1dec5cbdb
fedora
  • FEDORA-2016-37b9932690
  • FEDORA-2016-a236cb3315
gentoo GLSA-201704-03
mlist
  • [oss-security] 20161004 Re: X.Org security advisory: Protocol handling issues in X Window System client libraries
  • [oss-security] 20161004 X.Org security advisory: Protocol handling issues in X Window System client libraries
  • [xorg-announce] 20161004 X.Org security advisory: Protocol handling issues in X Window System client libraries
sectrack 1036945
Last major update 14-12-2016 - 21:51
Published 13-12-2016 - 15:59
Last modified 30-06-2017 - 21:30
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