CVE-2016-7943

critical
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Description

The XListFonts function in X.org libX11 before 1.6.4 might allow remote X servers to gain privileges via vectors involving length fields, which trigger out-of-bounds write operations.

References

http://www.openwall.com/lists/oss-security/2016/10/04/2

http://www.openwall.com/lists/oss-security/2016/10/04/4

http://www.securityfocus.com/bid/93362

http://www.securitytracker.com/id/1036945

https://cgit.freedesktop.org/xorg/lib/libX11/commit/?id=8c29f1607a31dac0911e45a0dd3d74173822b3c9

https://lists.fedoraproject.org/archives/list/[email protected]/message/GMCVDXMFPXR7QGMKDG22WPPJCXH2X3L7/

https://lists.x.org/archives/xorg-announce/2016-October/002720.html

https://security.gentoo.org/glsa/201704-03

https://usn.ubuntu.com/3758-1/

https://usn.ubuntu.com/3758-2/

Details

Source: MITRE

Published: 2016-12-13

Updated: 2018-09-13

Type: CWE-787

Risk Information

CVSS v2

Base Score: 7.5

Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Impact Score: 6.4

Exploitability Score: 10

Severity: HIGH

CVSS v3

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Impact Score: 5.9

Exploitability Score: 3.9

Severity: CRITICAL

Vulnerable Software

Configuration 1

OR

cpe:2.3:o:fedoraproject:fedora:25:*:*:*:*:*:*:*

Configuration 2

OR

cpe:2.3:a:x.org:libx11:*:*:*:*:*:*:*:* versions up to 1.6.3 (inclusive)

Tenable Plugins

View all (5 total)

IDNameProductFamilySeverity
131633EulerOS 2.0 SP2 : libX11 (EulerOS-SA-2019-2480)NessusHuawei Local Security Checks
critical
112205Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS : libx11 vulnerabilities (USN-3758-1)NessusUbuntu Local Security Checks
critical
99276GLSA-201704-03 : X.Org: Multiple vulnerabilitiesNessusGentoo Local Security Checks
critical
94774Fedora 25 : libX11 (2016-0df69ab477)NessusFedora Local Security Checks
critical
94439Slackware 13.0 / 13.1 / 13.37 / 14.0 / 14.1 / 14.2 / current : x11 (SSA:2016-305-02)NessusSlackware Local Security Checks
critical