[SECURITY] [DLA 315-1] nss security update

Package : nss
Version : 3.12.8-1+squeeze12
CVE ID : CVE-2015-2721 CVE-2015-2730

Several vulnerabilities have been discovered in nss, the Mozilla Network
Security Service library. The Common Vulnerabilities and Exposures project
identifies the following problems:

CVE-2015-2721

Karthikeyan Bhargavan discovered that NSS incorrectly handles state
transitions for the TLS state machine. A man-in-the-middle attacker
could exploit this flaw to skip the ServerKeyExchange message and
remove the forward-secrecy property.

CVE-2015-2730

Watson Ladd discovered that NSS does not properly perform Elliptical
Curve Cryptography (ECC) multiplication, allowing a remote attacker
to potentially spoof ECDSA signatures.

For the oldoldstable distribution (squeeze), these problems have been fixed
in version 3.12.8-1+squeeze12.

We recommend that you upgrade your nss packages.
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