The remote Ubuntu 14.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-2656-1 advisory.

    Karthikeyan Bhargavan discovered that NSS incorrectly handled state transitions for the TLS state machine.
    If a remote attacker were able to perform a machine-in-the-middle attack, this flaw could be exploited to     skip the ServerKeyExchange message and remove the forward-secrecy property. (CVE-2015-2721)

    Looben Yan discovered 2 use-after-free issues when using XMLHttpRequest in some circumstances. If a user     were tricked in to opening a specially crafted website, an attacker could potentially exploit these to     cause a denial of service via application crash, or execute arbitrary code with the privileges of the user     invoking Firefox. (CVE-2015-2722, CVE-2015-2733)

    Bob Clary, Christian Holler, Bobby Holley, Andrew McCreight, Terrence Cole, Steve Fink, Mats Palmgren, Wes     Kocher, Andreas Pehrson, Tooru Fujisawa, Andrew Sutherland, and Gary Kwong discovered multiple memory     safety issues in Firefox. If a user were tricked in to opening a specially crafted website, an attacker     could potentially exploit these to cause a denial of service via application crash, or execute arbitrary     code with the privileges of the user invoking Firefox. (CVE-2015-2724, CVE-2015-2725, CVE-2015-2726)

    Armin Razmdjou discovered that opening hyperlinks with specific mouse and key combinations could allow a     Chrome privileged URL to be opened without context restrictions being preserved. If a user were tricked in     to opening a specially crafted website, an attacker could potentially exploit this to bypass security     restrictions. (CVE-2015-2727)

    Paul Bandha discovered a type confusion bug in the Indexed DB Manager. If a user were tricked in to     opening a specially crafted website, an attacker could potentially exploit this to cause a denial of     service via application crash or execute arbitrary code with the priviliges of the user invoking Firefox.
    (CVE-2015-2728)

    Holger Fuhrmannek discovered an out-of-bounds read in Web Audio. If a user were tricked in to opening a     specially crafted website, an attacker could potentially exploit this to obtain sensitive information.
    (CVE-2015-2729)

    Watson Ladd discovered that NSS incorrectly handled Elliptical Curve Cryptography (ECC) multiplication. A     remote attacker could possibly use this issue to spoof ECDSA signatures. (CVE-2015-2730)

    A use-after-free was discovered when a Content Policy modifies the DOM to remove a DOM object. If a user     were tricked in to opening a specially crafted website, an attacker could potentially exploit this to     cause a denial of service via application crash or execute arbitrary code with the priviliges of the user     invoking Firefox. (CVE-2015-2731)

    Ronald Crane discovered multiple security vulnerabilities. If a user were tricked in to opening a     specially crafted website, an attacker could potentially exploit these to cause a denial of service via     application crash, or execute arbitrary code with the privileges of the user invoking Firefox.
    (CVE-2015-2734, CVE-2015-2735, CVE-2015-2736, CVE-2015-2737, CVE-2015-2738, CVE-2015-2739, CVE-2015-2740)

    David Keeler discovered that key pinning checks can be skipped when an overridable certificate error     occurs. This allows a user to manually override an error for a fake certificate, but cannot be exploited     on its own. (CVE-2015-2741)

    Jonas Jenwald discovered that some internal workers were incorrectly executed with a high privilege. If a     user were tricked in to opening a specially crafted website, an attacker could potentially exploit this in     combination with another security vulnerability, to execute arbitrary code in a privileged scope.
    (CVE-2015-2743)

    Matthew Green discovered a DHE key processing issue in NSS where a MITM could force a server to downgrade     TLS connections to 512-bit export-grade cryptography. An attacker could potentially exploit this to     impersonate the server. (CVE-2015-4000)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Detections

Analytics

Ubuntu 14.04 LTS : Firefox vulnerabilities (USN-2656-1)

low Nessus Plugin ID 84664

Version 1.19

Version 1.18

Version 1.17

Version 1.19 Aug 28, 2024, 11:02 PM CVSS metrics ("Cvssv4 score" set to 0.0) CVSSv2 severity (based on None, severity decreased from "High" to "Low") Detection (updated detection logic) Plugin metadata Plugin Feed: 202408282302
Version 1.18 Oct 21, 2023, 9:06 AM CVSS temporal metrics ("CVSSv2 temporal vector" set to "CVSS2#E:POC/RL:OF/RC:C". "CVSSv3 temporal vector" set to "CVSS:3.0/E:P/RL:O/RC:C") CVSSv2 score source (set to "CVE-2015-2740") CVSSv3 score source (set to "CVE-2015-4000") Detection Exploit attributes ("Exploit available" set to "True". "Exploitability ease" changed from "No known exploits are available" to "Exploits are available") Plugin metadata Plugin Feed: 202310210906
Version 1.17 Dec 6, 2022, 1:01 AM Reference Plugin Feed: 202212060101