CVE-2023-31439 json
An issue was discovered in systemd 253.
published 2023-06-13 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-35747
- cvss
- 5.3
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 28%
- public exploits
- 0
- none known
Summary
An issue was discovered in systemd 253. An attacker can modify the contents of past events in a sealed log file and then adjust the file such that checking the integrity shows no error, despite modifications. NOTE: the vendor reportedly sent "a reply denying that any of the finding was a security vulnerability."
Patch / fix
- github.com/systemd/systemd#28885 pull request
- github.com/kastel-security/Journald advisory
Exploit prediction
0.35% chance of exploitation in the next 30 days, higher than 28% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
Classification
- Weakness
-
- CWE-354 Improper Validation of Integrity Check Value
References
- github.com /systemd/systemd/pull/28885
-
github.com
/kastel-security/Journald
patch, third-party-advisory
-
github.com
/systemd/systemd/releases
release-notes
-
github.com
/kastel-security/Journald/blob/main/journald-publication.pdf
technical-description
Sources
- CVE List CVE-2023-31439
- NVD CVE-2023-31439
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