Ubuntu 10.04 LTS / 12.04 LTS / 12.10 / 13.04 : pyopenssl vulnerability (USN-1965-1)

Ubuntu Security Notice (C) 2013-2016 Canonical, Inc. / NASL script (C) 2013-2016 Tenable Network Security, Inc.


Synopsis :

The remote Ubuntu host is missing one or more security-related
patches.

Description :

It was discovered that pyOpenSSL did not properly handle certificates
with NULL characters in the Subject Alternative Name field. An
attacker could exploit this to perform a man in the middle attack to
view sensitive information or alter encrypted communications.

Note that Tenable Network Security has extracted the preceding
description block directly from the Ubuntu security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues.

Solution :

Update the affected python-openssl and / or python3-openssl packages.

Risk factor :

Medium / CVSS Base Score : 4.3
(CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N)
CVSS Temporal Score : 3.7
(CVSS2#E:ND/RL:OF/RC:C)
Public Exploit Available : true

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 70087 ()

Bugtraq ID: 62258

CVE ID: CVE-2013-4314

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