CVE-2021-29972 — Use After Free in Mozilla Firefox

CWE-416 — Use After Free6 documents6 sources
Severity
8.8HIGHNVD
EPSS
0.5%
top 35.52%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Mozilla FirefoxDebian Firefox
Timeline
PublishedAug 5
Latest updateMay 24

Description

A use-after-free vulnerability was found via testing, and traced to an out-of-date Cairo library. Updating the library resolved the issue, and may have remediated other, unknown security vulnerabilities as well. This vulnerability affects Firefox < 90.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HExploitability: 2.8 | Impact: 5.9

Affected Packages5 packages

▶debiandebian/firefox< firefox 90.0-1 (sid)
▶CVEListV5mozilla/firefoxunspecified — 90
▶NVDmozilla/firefox< 90.0
▶Ubuntumozilla/firefox< 90.0+build1-0ubuntu0.18.04.1+1
▶mozillamozilla/firefox

🔴Vulnerability Details

2
GHSA
GHSA-cx7x-p2rh-c2m2: A use-after-free vulnerability was found via testing, and traced to an out-of-date Cairo library↗2022-05-24
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OSV
CVE-2021-29972: A use-after-free vulnerability was found via testing, and traced to an out-of-date Cairo library↗2021-07-15
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📋Vendor Advisories

3
Ubuntu
Firefox vulnerabilities↗2021-07-16
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Debian
CVE-2021-29972: firefox - A use-after-free vulnerability was found via testing, and traced to an out-of-da...↗2021
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Mozilla
Mozilla Foundation Security Advisory 2021-28: CVE-2021-29972↗
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