CVE-2021-23970 — Reachable Assertion in Mozilla Firefox

CWE-617 — Reachable Assertion6 documents6 sources
Severity
6.5MEDIUMNVD
EPSS
0.3%
top 47.42%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Mozilla FirefoxDebian Firefox
Timeline
PublishedFeb 26
Latest updateMay 24

Description

Context-specific code was included in a shared jump table; resulting in assertions being triggered in multithreaded wasm code. This vulnerability affects Firefox < 86.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HExploitability: 2.8 | Impact: 3.6

Affected Packages5 packages

▶debiandebian/firefox< firefox 86.0-1 (sid)
▶CVEListV5mozilla/firefox< 86
▶NVDmozilla/firefox< 86.0
▶Ubuntumozilla/firefox< 86.0+build3-0ubuntu0.16.04.1+2
▶mozillamozilla/firefox

🔴Vulnerability Details

2
GHSA
GHSA-5j84-2mfg-4v5r: Context-specific code was included in a shared jump table; resulting in assertions being triggered in multithreaded wasm code↗2022-05-24
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OSV
CVE-2021-23970: Context-specific code was included in a shared jump table; resulting in assertions being triggered in multithreaded wasm code↗2021-02-26
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📋Vendor Advisories

3
Ubuntu
Firefox vulnerabilities↗2021-02-26
▶
Debian
CVE-2021-23970: firefox - Context-specific code was included in a shared jump table; resulting in assertio...↗2021
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Mozilla
Mozilla Foundation Security Advisory 2021-07: CVE-2021-23970↗
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