Ubuntu 12.04 LTS / 12.10 / 13.04 / 13.10 : curl vulnerability (USN-2058-1)

Ubuntu Security Notice (C) 2013-2014 Canonical, Inc. / NASL script (C) 2013-2014 Tenable Network Security, Inc.


Synopsis :

The remote Ubuntu host is missing a security-related patch.

Description :

Marc Deslauriers discovered that libcurl incorrectly verified CN and
SAN name fields when digital signature verification was disabled in
the GnuTLS backend. When libcurl is being used in this uncommon way by
specific applications, an attacker could exploit this to perform a man
in the middle attack to view sensitive information or alter encrypted
communications.

Solution :

Update the affected libcurl3-gnutls package.

Risk factor :

Medium / CVSS Base Score : 4.0
(CVSS2#AV:N/AC:H/Au:N/C:P/I:P/A:N)
CVSS Temporal Score : 3.5
(CVSS2#E:ND/RL:OF/RC:C)
Public Exploit Available : true

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 71531 ()

Bugtraq ID: 64431

CVE ID: CVE-2013-6422