CVE-2016-9079

Mozilla Firefox, Firefox ESR, and Thunderbird: Use-After-Free

As of , CVE-2016-9079 in Mozilla Firefox, Firefox ESR, and Thunderbird is on CISA's list of exploited vulnerabilities: CISA listed it on . Our patch-first group: Patch this week.

Exploited
Yes: CISA listed it on 22 June 2023
US federal deadline
13 July 202321 days after CISA listed it. US federal civilian agencies must fix it by then.
Used in ransomware campaigns
Not known to CISA
EPSS score
0.87Higher than 99% of the CVEs EPSS scores. EPSS estimates the chance of exploitation activity in the next 30 days.
EPSS when listed
0.97 on 22 June 2023EPSS on the day CISA listed it.
Public exploit
1 Metasploit module and 2 Exploit-DB entries (1 verified)
Fix
Vendor advice: www.mozilla.orgLinks below, from CISA's entry.

What CISA says to do

Apply updates per vendor instructions.

CISA's required action

What the flaw is

Mozilla Firefox, Firefox ESR, and Thunderbird contain a use-after-free vulnerability in SVG Animation, targeting Firefox and Tor browser users on Windows.

CISA's description

A use-after-free vulnerability in SVG Animation has been discovered. An exploit built on this vulnerability has been discovered in the wild targeting Firefox and Tor Browser users on Windows. This vulnerability affects Firefox < 50.0.2, Firefox ESR < 45.5.1, and Thunderbird < 45.5.1.

The CVE record's description, from mozilla

CVE published
11 June 2018
Assigned by
mozilla
CVSS
7.5 High (CVSS 3.1, from CISA-ADP)
CWE-416
Use After Free
CISA SSVC, exploitation
active
CISA SSVC, automatable
yes
CISA SSVC, technical impact
partial

Timeline

  1. Exploit-DB published an exploit (EDB-ID 41151).
  2. Exploit-DB published an exploit (EDB-ID 42327).
  3. The CVE record was published.
  4. CISA added it to its list of exploited vulnerabilities.
  5. The US federal deadline to fix it.

Public exploits

Facts from Metasploit's module list and Exploit-DB's index; we never copy exploit code.

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