CVE-2019-11756 — Use After Free in Mozilla Firefox

CWE-416 — Use After Free8 documents7 sources
Severity
8.8HIGHNVD
EPSS
0.3%
top 51.02%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Mozilla FirefoxDebian Firefox
Timeline
PublishedJan 8
Latest updateMay 24

Description

Improper refcounting of soft token session objects could cause a use-after-free and crash (likely limited to a denial of service). This vulnerability affects Firefox < 71.

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 Packages4 packages

▶debiandebian/firefox< firefox 71.0-1 (sid)
▶NVDmozilla/firefox< 71.0
▶Ubuntumozilla/firefox< 71.0+build5-0ubuntu0.16.04.1+2
▶CVEListV5mozilla/firefoxbefore 71

🔴Vulnerability Details

2
GHSA
GHSA-v78f-65qq-96m8: Improper refcounting of soft token session objects could cause a use-after-free and crash (likely limited to a denial of service)↗2022-05-24
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OSV
CVE-2019-11756: Improper refcounting of soft token session objects could cause a use-after-free and crash (likely limited to a denial of service)↗2019-12-04
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📋Vendor Advisories

4
Ubuntu
Firefox vulnerabilities↗2019-12-13
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Red Hat
nss: Use-after-free in sftk_FreeSession due to improper refcounting↗2019-12-10
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Ubuntu
Firefox vulnerabilities↗2019-12-09
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Debian
CVE-2019-11756: firefox - Improper refcounting of soft token session objects could cause a use-after-free ...↗2019
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💬Community

1
Bugzilla
CVE-2019-11756 nss: Use-after-free in sftk_FreeSession due to improper refcounting↗2019-11-21
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