Ubuntu 12.04 LTS / 14.04 LTS / 15.10 : firefox vulnerability (USN-2893-1)

Medium Nessus Plugin ID 88711


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


Jason Pang discovered that service workers intercept responses to plugin network requests made through the browser. An attacker could potentially exploit this to bypass same origin restrictions using the Flash plugin. (CVE-2016-1949).

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: 88711

File Name: ubuntu_USN-2893-1.nasl

Version: $Revision: 1.10 $

Type: local

Agent: unix

Published: 2016/02/12

Modified: 2016/12/01

Dependencies: 12634

Risk Information

Risk Factor: Medium


Base Score: 6.8

Temporal Score: 5

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

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


Base Score: 8.8

Temporal Score: 7.7

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

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: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: 2016/02/11

Reference Information

CVE: CVE-2016-1949

OSVDB: 134408

USN: 2893-1