Debian Security Advisory

DLA-315-1 nss -- LTS security update

Date Reported:
27 Sep 2015
Affected Packages:
Security database references:
In Mitre's CVE dictionary: CVE-2015-2721, CVE-2015-2730.
More information:

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.