| Description: | Description:
The remote host is missing an update to nss
announced via advisory USN-810-1.
Details follow:
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:
The problem can be corrected by upgrading your system to the
following package versions:
Ubuntu 8.04 LTS:
libnss3-1d 3.12.3.1-0ubuntu0.8.04.1
Ubuntu 8.10:
libnss3-1d 3.12.3.1-0ubuntu0.8.10.1
Ubuntu 9.04:
libnss3-1d 3.12.3.1-0ubuntu0.9.04.1
After a standard system upgrade you need to restart an applications that
use NSS, such as Firefox, to effect the necessary changes.
http://www.securityspace.com/smysecure/catid.html?in=USN-810-1
CVSS Score:
9.3
CVSS Vector:
AV:N/AC:M/Au:N/C:C/I:C/A:C
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