Ubuntu 8.04 LTS / 8.10 / 9.04 : nspr update (USN-810-2)

Ubuntu Security Notice (C) 2009-2013 Canonical, Inc. / NASL script (C) 2009-2013 Tenable Network Security, Inc.


Synopsis :

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

Description :

USN-810-1 fixed vulnerabilities in NSS. This update provides the NSPR
needed to use the new NSS.

Moxie Marlinspike discovered that NSS did not properly handle regular
expressions in certificate names. A remote attacker could create a
specially crafted certificate to cause a denial of service (via
application crash) or execute arbitrary code as the user invoking the
program. (CVE-2009-2404)

Moxie Marlinspike and Dan Kaminsky independently discovered
that NSS did not properly handle certificates with NULL
characters in the certificate name. An attacker could
exploit this to perform a man in the middle attack to view
sensitive information or alter encrypted communications.
(CVE-2009-2408)

Dan Kaminsky discovered NSS would still accept certificates
with MD2 hash signatures. As a result, an attacker could
potentially create a malicious trusted certificate to
impersonate another site. (CVE-2009-2409).

Solution :

Update the affected libnspr4-0d, libnspr4-0d-dbg and / or libnspr4-dev
packages.

Risk factor :

High / CVSS Base Score : 9.3
(CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 7.7
(CVSS2#E:F/RL:OF/RC:C)
Public Exploit Available : true

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 40491 ()

Bugtraq ID: 35888
35891

CVE ID: CVE-2009-2404
CVE-2009-2408
CVE-2009-2409