High severity · published Jun 13, 2016
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…
7.5
CVSS
3.3%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)3.3% · higher than 88% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LI
Libksba · Gnupg
through 1.3.2 · source: NVD
UL
Ubuntu Linux · Canonical
12.04; 14.04 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2016-4356
CVE.org
https://www.cve.org/CVERecord?id=CVE-2016-4356
git.gnupg.org
http://git.gnupg.org/cgi-bin/gitweb.cgi?p=libksba.git%3Ba=commit%3Bh=243d12fdec66a4360fbb3e307a046b39b5b4ffc3
www.openwall.com
http://www.openwall.com/lists/oss-security/2016/04/29/5
www.openwall.com
http://www.openwall.com/lists/oss-security/2016/04/29/8
www.openwall.com
http://www.openwall.com/lists/oss-security/2016/05/10/3
www.ubuntu.com
http://www.ubuntu.com/usn/USN-2982-1
security.gentoo.org
https://security.gentoo.org/glsa/201604-04
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