Vulnerability in Systemd Project
CVE-2023-31439
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."
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (26.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 26.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Systemd Project — versions 253
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/systemd/systemd/releases (Release Notes)
- github.com/kastel-security/Journald/blob/main/journald-publication.pdf (Technical Description)
- github.com/kastel-security/Journald (Patch, Third Party Advisory)
- github.com/systemd/systemd/pull/28885
Frequently asked questions
- What is CVE-2023-31439?
- CVE-2023-31439 is a medium-severity vulnerability in Systemd Project, classified under Improper Validation of Integrity Check Value. CVSS score: 5.3/10. Published 2023-06-13.
- How severe is CVE-2023-31439?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2023-31439 known to be exploited?
- 19 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.