Mozilla Firefox < 57.0.4 Multiple Vulnerabilities

medium Nessus Network Monitor Plugin ID 700325
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Synopsis

The remote host has a web browser installed that is vulnerable to multiple attack vectors.

Description

Versions of Mozilla Firefox earlier than 57.0.4 are unpatched for the following vulnerabilities :

- A flaw exists related to speculative execution, which is used as a performance feature to speed up operations. This optimization can result in memory being cached during conditional branches handling out-of-bounds checks. Using a vulnerable code pattern, or a JIT engine or interpreter to generate such a pattern, an attacker can perform a Flush+Reload or Evict+Reload side-channel attack on the cache and disclose parts of the privileged kernel memory. (CVE-2017-5753)
- A flaw exists in the fundamental design related to out-of-order process execution, which is used as a performance feature to speed up operations. This optimization can result in memory being cached before exceptions are raised for restricted memory access. Using transient instructions in combination with a Flush+Reload side-channel attack a local attacker can disclose parts of the privileged kernel memory. (CVE-2017-5754)
- A flaw exists related to speculative execution, which is used as a performance feature to speed up operations. This optimization can result in memory being cached during indirect branch prediction. This may allow a local attacker to train the Branch Target Buffer (BTB) to trigger a false prediction to a specially crafted memory location, causing a speculative execution of a crafted gadget and the caching of arbitrary memory. Using a side-channel attack on the cache the attacker can disclose parts of the privileged kernel memory. (CVE-2017-5754)

Solution

Upgrade to Firefox version 57.0.4 or later.

See Also

https://spectreattack.com

https://www.mozilla.org/en-US/security/advisories/mfsa2018-01

Plugin Details

Severity: Medium

ID: 700325

Family: Web Clients

Published: 8/21/2018

Updated: 3/6/2019

Dependencies: 9131

Nessus ID: 105616

Risk Information

CVSS v2

Risk Factor: Medium

Base Score: 4.7

Temporal Score: 3.9

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

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

CVSS v3

Risk Factor: Medium

Base Score: 5.1

Temporal Score: 4.7

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

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

Vulnerability Information

Patch Publication Date: 1/2/2018

Vulnerability Publication Date: 1/2/2018

Reference Information

CVE: CVE-2017-5753, CVE-2017-5715, CVE-2017-5754

BID: 102371, 102376