CVE-2024-1556 json
The incorrect object was checked for NULL in the built-in profiler, potentially leading to invalid memory access and undefined behavior.
published 2024-02-20 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-17303
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 41%
- public exploits
- 0
- none known
Summary
The incorrect object was checked for NULL in the built-in profiler, potentially leading to invalid memory access and undefined behavior. *Note:* This issue only affects the application when the profiler is running. This vulnerability affects Firefox < 123.
Patch / fix
- Mozilla Firefox 123
- firefox Ubuntu 20.04 LTS 123.0+build3-0ubuntu0.20.04.1
ubuntu advisories UBUNTU-CVE-2024-1556
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 123.0-1.1
opensuse advisories openSUSE-SU-2024:14572-1openSUSE-SU-2024:13728-1
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 y ago
Exploit prediction
0.47% chance of exploitation in the next 30 days, higher than 41% 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:R/S:U/C:N/I:N/A:H |
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
Affected products
- Mozilla Firefox
Classification
- Weakness
-
- CWE-754 Improper Check for Unusual or Exceptional Conditions
References
-
mozilla.org
/security/advisories/mfsa2024-05/
vendor-advisory
-
bugzilla.mozilla.org
/show_bug.cgi?id=1870414
issue-tracking
Sources
- CVE List CVE-2024-1556
- NVD CVE-2024-1556
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.