Vulnerability CVE-2016-4574
Published: 2016-06-13

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.

Type:

CWE-189

 (Numeric Errors)

CVSS2 => (AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
Opensuse -> LEAP 
Opensuse -> Opensuse 
Novell -> LEAP 
Novell -> Opensuse 
Libksba project -> Libskba 
Canonical -> Ubuntu linux 

 References:
http://git.gnupg.org/cgi-bin/gitweb.cgi?p=libksba.git;a=commit;h=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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