Ubuntu 12.04 LTS / 14.04 LTS / 15.10 : nss vulnerability (USN-2903-1)

Critical Nessus Plugin ID 88838


The remote Ubuntu host is missing a security-related patch.


Hanno Bock discovered that NSS incorrectly handled certain division functions, possibly leading to cryptographic weaknesses.

This update also refreshes the NSS package to version 3.21 which includes the latest CA certificate bundle, and removes the SPI CA.

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.


Update the affected libnss3 package.

Plugin Details

Severity: Critical

ID: 88838

File Name: ubuntu_USN-2903-1.nasl

Version: $Revision: 2.9 $

Type: local

Agent: unix

Published: 2016/02/18

Modified: 2016/12/01

Dependencies: 12634

Risk Information

Risk Factor: Critical


Base Score: 10

Temporal Score: 7.4

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

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


Base Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:libnss3, cpe:/o:canonical:ubuntu_linux:12.04:-:lts, cpe:/o:canonical:ubuntu_linux:14.04, cpe:/o:canonical:ubuntu_linux:15.10

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

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2016/02/17

Reference Information

CVE: CVE-2015-1938, CVE-2016-1938

OSVDB: 133669

USN: 2903-1