Ubuntu 10.04 LTS / 11.04 / 11.10 : python2.6 vulnerabilities (USN-1596-1)

Ubuntu Security Notice (C) 2012-2013 Canonical, Inc. / NASL script (C) 2012-2013 Tenable Network Security, Inc.


Synopsis :

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

Description :

It was discovered that Python would prepend an empty string to
sys.path under certain circumstances. A local attacker with write
access to the current working directory could exploit this to execute
arbitrary code. (CVE-2008-5983)

It was discovered that the audioop module did not correctly perform
input validation. If a user or automatated system were tricked into
opening a crafted audio file, an attacker could cause a denial of
service via application crash. (CVE-2010-1634, CVE-2010-2089)

Giampaolo Rodola discovered several race conditions in the smtpd
module. A remote attacker could exploit this to cause a denial of
service via daemon outage. (CVE-2010-3493)

It was discovered that the CGIHTTPServer module did not properly
perform input validation on certain HTTP GET requests. A remote
attacker could potentially obtain access to CGI script source files.
(CVE-2011-1015)

Niels Heinen discovered that the urllib and urllib2 modules would
process Location headers that specify a redirection to file: URLs. A
remote attacker could exploit this to obtain sensitive information or
cause a denial of service. This issue only affected Ubuntu 11.04.
(CVE-2011-1521)

It was discovered that SimpleHTTPServer did not use a charset
parameter in the Content-Type HTTP header. An attacker could
potentially exploit this to conduct cross-site scripting (XSS) attacks
against Internet Explorer 7 users. This issue only affected Ubuntu
11.04. (CVE-2011-4940)

It was discovered that Python distutils contained a race condition
when creating the ~/.pypirc file. A local attacker could exploit this
to obtain sensitive information. (CVE-2011-4944)

It was discovered that SimpleXMLRPCServer did not properly validate
its input when handling HTTP POST requests. A remote attacker could
exploit this to cause a denial of service via excessive CPU
utilization. (CVE-2012-0845)

It was discovered that Python was susceptible to hash algorithm
attacks. An attacker could cause a denial of service under certian
circumstances. This update adds the '-R' command line option and
honors setting the PYTHONHASHSEED environment variable to 'random' to
salt str and datetime objects with an unpredictable value.
(CVE-2012-1150).

Solution :

Update the affected python2.6 and / or python2.6-minimal packages.

Risk factor :

Medium / CVSS Base Score : 6.9
(CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C)