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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
redhatCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 79%
VendorProductVersion
gnupglibksba
𝑥
≤ 1.3.2
canonicalubuntu_linux
12.04
canonicalubuntu_linux
14.04
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
libksba
bullseye (security)
1.5.0-3+deb11u2
fixed
bullseye
1.5.0-3+deb11u2
fixed
wheezy
no-dsa
squeeze
no-dsa
bookworm
1.6.3-2
fixed
sid
1.6.7-2
fixed
trixie
1.6.7-2
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
libksba
xenial
not-affected
wily
not-affected
trusty
Fixed 1.3.0-3ubuntu0.14.04.2
released
precise
Fixed 1.2.0-2ubuntu0.2
released
Common Weakness Enumeration
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
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