CVE-2016-4574

Severity: high (CVSS 7.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2016-06-13 · updated 2026-06-17
Weakness: CWE-189

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.

Affected products

Canonical Ubuntu Linux: 12.04, 14.04, 15.10, 16.04
GnuPG Libksba: through 1.3.3
openSUSE Leap: 42.1
Opensuse: 13.2

References

http://git.gnupg.org/cgi-bin/gitweb.cgi?p=libksba.git%3Ba=commit%3Bh=6be61daac047d8e6aa941eb103f8e71a1d4e3c75
http://lists.opensuse.org/opensuse-updates/2016-05/msg00087.html
http://lists.opensuse.org/opensuse-updates/2016-06/msg00028.html
http://www.openwall.com/lists/oss-security/2016/05/10/3
http://www.openwall.com/lists/oss-security/2016/05/10/4
http://www.ubuntu.com/usn/USN-2982-1
http://git.gnupg.org/cgi-bin/gitweb.cgi?p=libksba.git%3Ba=commit%3Bh=6be61daac047d8e6aa941eb103f8e71a1d4e3c75
http://lists.opensuse.org/opensuse-updates/2016-05/msg00087.html
http://lists.opensuse.org/opensuse-updates/2016-06/msg00028.html
http://www.openwall.com/lists/oss-security/2016/05/10/3
http://www.openwall.com/lists/oss-security/2016/05/10/4
http://www.ubuntu.com/usn/USN-2982-1

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