Ubuntu 12.04 LTS / 14.04 LTS / 14.10 : firefox vulnerability (USN-2557-1)

Medium Nessus Plugin ID 82643


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


Muneaki Nishimura discovered a flaw in Mozilla's HTTP Alternative Services implementation which meant SSL certificate verification could be bypassed in some circumstances. A remote attacker could potentially exploit this to conduct a man in the middle attack. (CVE-2015-0799).

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 firefox package.

Plugin Details

Severity: Medium

ID: 82643

File Name: ubuntu_USN-2557-1.nasl

Version: $Revision: 1.9 $

Type: local

Agent: unix

Published: 2015/04/08

Modified: 2017/12/28

Dependencies: 12634

Risk Information

Risk Factor: Medium


Base Score: 4.3

Temporal Score: 3.6

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

Temporal Vector: CVSS2#E:F/RL:OF/RC:ND

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:firefox, cpe:/o:canonical:ubuntu_linux:12.04:-:lts, cpe:/o:canonical:ubuntu_linux:14.04, cpe:/o:canonical:ubuntu_linux:14.10

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2015/04/07

Reference Information

CVE: CVE-2015-0799

BID: 73905

OSVDB: 120297

USN: 2557-1