CVE-2016-7944
published 2016-12-13CVE-2016-7944: Integer overflow in X.org libXfixes before 5.0.3 on 32-bit platforms might allow remote X servers to gain privileges via a length value of INT_MAX, which…
PriorityP349critical9.8CVSS 3.0
AVNACLPRNUINSUCHIHAH
EPSS
3.40%
87.5th percentile
Integer overflow in X.org libXfixes before 5.0.3 on 32-bit platforms might allow remote X servers to gain privileges via a length value of INT_MAX, which triggers the client to stop reading data and get out of sync.
Affected
8 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | libxfixes | < libxfixes 1:5.0.3-1 (bookworm) | libxfixes 1:5.0.3-1 (bookworm) |
| fedoraproject | fedora | — | — |
| fedoraproject | fedora | — | — |
| x.org | libxfixes | <= 5.0.2 | — |
| x.org | libxfixes | >= 0 < 1:5.0.3-1 | 1:5.0.3-1 |
| x.org | libxfixes | >= 0 < 1:5.0.3-1 | 1:5.0.3-1 |
| x.org | libxfixes | >= 0 < 1:5.0.3-1 | 1:5.0.3-1 |
| x.org | libxfixes | >= 0 < 1:5.0.3-1 | 1:5.0.3-1 |
CVSS provenance
nvdv3.09.8CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
nvdv2.07.5HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P
osv9.8CRITICAL
vendor_debian9.8LOW
vendor_redhat9.8CRITICAL
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GHSA
GHSA-j7xf-885g-gx3g: Integer overflow in X
ghsa_unreviewed·2022-05-17
CVE-2016-7944 [CRITICAL] CWE-190 GHSA-j7xf-885g-gx3g: Integer overflow in X
Integer overflow in X.org libXfixes before 5.0.3 on 32-bit platforms might allow remote X servers to gain privileges via a length value of INT_MAX, which triggers the client to stop reading data and get out of sync.
OSV
CVE-2016-7944: Integer overflow in X
osv·2016-12-13·CVSS 9.8
CVE-2016-7944 [CRITICAL] CVE-2016-7944: Integer overflow in X
Integer overflow in X.org libXfixes before 5.0.3 on 32-bit platforms might allow remote X servers to gain privileges via a length value of INT_MAX, which triggers the client to stop reading data and get out of sync.
Ubuntu
libXfixes vulnerability
vendor_ubuntu·2022-05-23
CVE-2016-7944 libXfixes vulnerability
Title: libXfixes vulnerability
Summary: libXfixes could be made to crash or run programs if it received specially
crafted input.
Tobias Stoeckmann discovered that libXfixes incorrectly handled certain
inputs. An attacker could possibly use this issue to cause a denial
of service, or possibly execute arbitrary code.
Instructions: In general, a standard system update will make all the necessary changes.
Red Hat
libXfixes: Insufficient validation of server responses results in Integer overflow
vendor_redhat·2016-09-25·CVSS 9.8
CVE-2016-7944 [CRITICAL] CWE-190 libXfixes: Insufficient validation of server responses results in Integer overflow
libXfixes: Insufficient validation of server responses results in Integer overflow
Integer overflow in X.org libXfixes before 5.0.3 on 32-bit platforms might allow remote X servers to gain privileges via a length value of INT_MAX, which triggers the client to stop reading data and get out of sync.
Package: libXfixes (Red Hat Enterprise Linux 5) - Will not fix
Package: libXfixes (Red Hat Enterprise Linux 6) - Will not fix
Package: libXfixes (Red Hat Enterprise Linux 7) - Will not fix
Debian
CVE-2016-7944: libxfixes - Integer overflow in X.org libXfixes before 5.0.3 on 32-bit platforms might allow...
vendor_debian·2016·CVSS 9.8
CVE-2016-7944 [CRITICAL] CVE-2016-7944: libxfixes - Integer overflow in X.org libXfixes before 5.0.3 on 32-bit platforms might allow...
Integer overflow in X.org libXfixes before 5.0.3 on 32-bit platforms might allow remote X servers to gain privileges via a length value of INT_MAX, which triggers the client to stop reading data and get out of sync.
Scope: local
bookworm: resolved (fixed in 1:5.0.3-1)
bullseye: resolved (fixed in 1:5.0.3-1)
forky: resolved (fixed in 1:5.0.3-1)
sid: resolved (fixed in 1:5.0.3-1)
trixie: resolved (fixed in 1:5.0.3-1)
No detection rules found.
Bugzilla
CVE-2016-7944 libXfixes: Insufficient validation of server responses results in Integer overflow [fedora-all]
bugzilla·2016-10-05·CVSS 9.8
CVE-2016-7944 [CRITICAL] CVE-2016-7944 libXfixes: Insufficient validation of server responses results in Integer overflow [fedora-all]
CVE-2016-7944 libXfixes: Insufficient validation of server responses results in Integer overflow [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of Fedora.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects
Bugzilla
CVE-2016-7944 libXfixes: Insufficient validation of server responses results in Integer overflow
bugzilla·2016-10-05·CVSS 9.8
CVE-2016-7944 [CRITICAL] CVE-2016-7944 libXfixes: Insufficient validation of server responses results in Integer overflow
CVE-2016-7944 libXfixes: Insufficient validation of server responses results in Integer overflow
It was found that when receiving a response from the server protocol data is not validated sufficiently. The 32 bit field "rep.length" is not checked for validity, which allows an integer overflow on 32 bit systems.
A malicious server could send INT_MAX as length, which gets multiplied by the size of XRectangle. In that case the client won't read the whole data from server, getting out of sync.
Upstream patch:
https://cgit.freedesktop.org/xorg/lib/libXfixes/commit/?id=61c1039ee23a2d1de712843bed3480654d7ef42e
External References:
https://lists.x.org/archives/xorg-announce/2016-October/002720.html
CVE assignment:
http://seclists.org/oss-sec/2016/q4/17
Discussion:
Created libXfixes track
http://www.openwall.com/lists/oss-security/2016/10/04/2http://www.openwall.com/lists/oss-security/2016/10/04/4http://www.securityfocus.com/bid/93361http://www.securitytracker.com/id/1036945https://cgit.freedesktop.org/xorg/lib/libXfixes/commit/?id=61c1039ee23a2d1de712843bed3480654d7ef42ehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4CE6VJWBMOWLSCH4OP4TAEPIA7NP53ON/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GE43MDCRGS4R7MRRZNVSLREHRLU5OHCV/https://lists.x.org/archives/xorg-announce/2016-October/002720.htmlhttps://security.gentoo.org/glsa/201704-03http://www.openwall.com/lists/oss-security/2016/10/04/2http://www.openwall.com/lists/oss-security/2016/10/04/4http://www.securityfocus.com/bid/93361http://www.securitytracker.com/id/1036945https://cgit.freedesktop.org/xorg/lib/libXfixes/commit/?id=61c1039ee23a2d1de712843bed3480654d7ef42ehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4CE6VJWBMOWLSCH4OP4TAEPIA7NP53ON/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GE43MDCRGS4R7MRRZNVSLREHRLU5OHCV/https://lists.x.org/archives/xorg-announce/2016-October/002720.htmlhttps://security.gentoo.org/glsa/201704-03
2016-12-13
Published