CVE-2019-9820 — Use After Free in Mozilla Firefox

CWE-416 — Use After Free14 documents7 sources
Severity
9.8CRITICALNVD
EPSS
0.6%
top 31.89%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
6
Mozilla FirefoxMozilla Firefox ESRMozilla Thunderbird+3 more
Timeline
PublishedJul 23
Latest updateMay 24

Description

A use-after-free vulnerability can occur in the chrome event handler when it is freed while still in use. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.7, Firefox < 67, and Firefox ESR < 60.7.

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 3.9 | Impact: 5.9

Affected Packages12 packages

▶debiandebian/firefox< firefox 67.0-2 (sid)
▶CVEListV5mozilla/firefoxunspecified — 67
▶NVDmozilla/firefox< 67.0
▶debiandebian/firefox-esr< firefox 67.0-2 (sid)
▶CVEListV5mozilla/firefox_esrunspecified — 60.7

🔴Vulnerability Details

6
GHSA
GHSA-jgjx-vxj6-pmw4: A use-after-free vulnerability can occur in the chrome event handler when it is freed while still in use↗2022-05-24
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OSV
CVE-2019-9820: A use-after-free vulnerability can occur in the chrome event handler when it is freed while still in use↗2019-07-23
▶
OSV
firefox regression↗2019-06-14
▶
OSV
firefox regression↗2019-06-06
▶
OSV
thunderbird vulnerabilities↗2019-05-28
▶

📋Vendor Advisories

6
Ubuntu
Firefox regression↗2019-06-14
▶
Ubuntu
Firefox regression↗2019-06-06
▶
Ubuntu
Thunderbird vulnerabilities↗2019-05-28
▶
Red Hat
Mozilla: Use-after-free of ChromeEventHandler by DocShell↗2019-05-22
▶
Ubuntu
Firefox vulnerabilities↗2019-05-21
▶

💬Community

1
Bugzilla
CVE-2019-9820 Mozilla: Use-after-free of ChromeEventHandler by DocShell↗2019-05-22
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