CVE-2016-7943 — Out-of-bounds Write in Libx11

CWE-787 — Out-of-bounds Write11 documents8 sources
Severity
9.8CRITICALNVD
EPSS
4.4%
top 10.99%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
X.org Libx11Fedoraproject Fedora
Timeline
PublishedDec 13
Latest updateMay 14

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.

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 3.9 | Impact: 5.9

Affected Packages3 packages

▶Debianx.org/libx11< 2:1.6.4-1+3
▶Ubuntux.org/libx11< 2:1.6.2-1ubuntu2.1+2
▶NVDx.org/libx111.6.3

Also affects: Fedora 25

🔴Vulnerability Details

4
GHSA
GHSA-84fh-jqg7-vh26: The XListFonts function in X↗2022-05-14
▶
OSV
libx11 vulnerabilities↗2018-08-30
▶
CVEList
CVE-2016-7943: The XListFonts function in X↗2016-12-13
▶
OSV
CVE-2016-7943: The XListFonts function in X↗2016-12-13
▶

📋Vendor Advisories

4
Ubuntu
libx11 vulnerabilities↗2018-08-30
▶
Ubuntu
libx11 vulnerabilities↗2018-08-30
▶
Red Hat
libX11: Insufficient validation of server responses in FontNames↗2016-09-25
▶
Debian
CVE-2016-7943: libx11 - The XListFonts function in X.org libX11 before 1.6.4 might allow remote X server...↗2016
▶

💬Community

2
Bugzilla
CVE-2016-7943 libX11: Insufficient validation of server responses in FontNames↗2016-10-05
▶
Bugzilla
CVE-2016-7942 CVE-2016-7943 libX11: various flaws [fedora-all]↗2016-10-05
▶
CVE-2016-7943 — Out-of-bounds Write in X.org Libx11 | cvebase