Debian DSA-3336-1 : nss - security update

Medium Nessus Plugin ID 85466

New! Vulnerability Priority Rating (VPR)

Tenable calculates a dynamic VPR for every vulnerability. VPR combines vulnerability information with threat intelligence and machine learning algorithms to predict which vulnerabilities are most likely to be exploited in attacks. Read more about what VPR is and how it's different from CVSS.

VPR Score: 3.4

Synopsis

The remote Debian host is missing a security-related update.

Description

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.

Solution

Upgrade the nss packages.

For the oldstable distribution (wheezy), these problems have been fixed in version 2:3.14.5-1+deb7u5.

For the stable distribution (jessie), these problems have been fixed in version 2:3.17.2-1.1+deb8u1.

See Also

https://security-tracker.debian.org/tracker/CVE-2015-2721

https://security-tracker.debian.org/tracker/CVE-2015-2730

https://packages.debian.org/source/wheezy/nss

https://packages.debian.org/source/jessie/nss

https://www.debian.org/security/2015/dsa-3336

Plugin Details

Severity: Medium

ID: 85466

File Name: debian_DSA-3336.nasl

Version: 2.4

Type: local

Agent: unix

Published: 2015/08/18

Updated: 2020/09/23

Dependencies: 12634

Risk Information

Risk Factor: Medium

VPR Score: 3.4

CVSS v2.0

Base Score: 4.3

Temporal Score: 3.2

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:nss, cpe:/o:debian:debian_linux:7.0, cpe:/o:debian:debian_linux:8.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2015/08/17

Reference Information

CVE: CVE-2015-2721, CVE-2015-2730

DSA: 3336