CVE-2024-4774 json
The `ShmemCharMapHashEntry()` code was susceptible to potentially undefined behavior by bypassing the move semantics for one of its data me…
published 2024-05-14 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-44367
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 31%
- public exploits
- 0
- none known
Summary
The `ShmemCharMapHashEntry()` code was susceptible to potentially undefined behavior by bypassing the move semantics for one of its data members. This vulnerability affects Firefox < 126.
Patch / fix
- Mozilla Firefox 126
- firefox Ubuntu 20.04 LTS 126.0+build2-0ubuntu0.20.04.1
ubuntu advisories UBUNTU-CVE-2024-4774
Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
- firefox-esr openSUSE Tumbleweed 128.5.1-1.1
- MozillaFirefox openSUSE Tumbleweed 126.0-1.1
opensuse advisories openSUSE-SU-2024:14572-1openSUSE-SU-2024:13980-1
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 y ago
Exploit prediction
0.37% chance of exploitation in the next 30 days, higher than 31% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L |
| NVD | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L |
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L |
Affected products
- Mozilla Firefox
Classification
- Weakness
-
- CWE-758 Reliance on Undefined, Unspecified, or Implementation-Defined Behavior
References
-
mozilla.org
/security/advisories/mfsa2024-21/
vendor-advisory
-
bugzilla.mozilla.org
/show_bug.cgi?id=1886598
issue-tracking
Sources
- CVE List CVE-2024-4774
- NVD CVE-2024-4774
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.