CVE-2016-4356

The append_utf8_value function in the DN decoder (dn.c) in Libksba before 1.3.3 allows remote attackers to cause a denial of service (out-of-bounds read) by clearing the high bit of the byte after invalid utf-8 encoded data.

Score

CVSS 3.0 7.5 High

Status

Modified - secalert@redhat.com

Published

2016-06-13

Last modified

2024-08-06

Weaknesses

CWE-119

Affected products

• Ubuntu Linux (Canonical)
• Libksba (Gnupg)

References

• http://git.gnupg.org/cgi-bin/gitweb.cgi?p=libksba.git%3Ba=commit%3Bh=243d12fdec66a4360fbb3e307a046b39b5b4ffc3
• http://www.openwall.com/lists/oss-security/2016/04/29/5
• http://www.openwall.com/lists/oss-security/2016/04/29/8
• http://www.openwall.com/lists/oss-security/2016/05/10/3
• http://www.ubuntu.com/usn/USN-2982-1
• https://security.gentoo.org/glsa/201604-04