CVE-2016-4574 — Encoding Error in Libksba

CWE-172 — Encoding Error9 documents7 sources
Severity
7.5HIGHNVD
EPSS
1.0%
top 23.54%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
5
Gnupg LibksbaDebian LibksbaCanonical Ubuntu Linux+2 more
Timeline
PublishedJun 13
Latest updateMay 13

Description

Off-by-one error in the append_utf8_value function in the DN decoder (dn.c) in Libksba before 1.3.4 allows remote attackers to cause a denial of service (out-of-bounds read) via invalid utf-8 encoded data. NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-4356.

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages6 packages

▶debiandebian/libksba< libksba 1.3.4-3 (bookworm)
▶Debiangnupg/libksba< 1.3.4-3+3
▶Ubuntugnupg/libksba< 1.3.0-3ubuntu0.14.04.2+1
▶NVDgnupg/libksba1.3.3
▶NVDopensuse/leap42.1

Also affects: Ubuntu Linux 12.04, 14.04, 15.10, 16.04

🔴Vulnerability Details

3
GHSA
GHSA-986h-5j8j-hgfc: Off-by-one error in the append_utf8_value function in the DN decoder (dn↗2022-05-13
▶
OSV
CVE-2016-4574: Off-by-one error in the append_utf8_value function in the DN decoder (dn↗2016-06-13
▶
OSV
libksba vulnerabilities↗2016-05-17
▶

📋Vendor Advisories

3
Ubuntu
Libksba vulnerabilities↗2016-05-17
▶
Red Hat
libksba: Incomplete fix for CVE-2016-4356↗2016-05-10
▶
Debian
CVE-2016-4574: libksba - Off-by-one error in the append_utf8_value function in the DN decoder (dn.c) in L...↗2016
▶

💬Community

2
Bugzilla
CVE-2016-4574 libksba: Incomplete fix for CVE-2016-4356↗2016-05-10
▶
Bugzilla
CVE-2016-4574 CVE-2016-4579 libksba: various flaws [fedora-all]↗2016-05-10
▶