CVE-2023-31438

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-06-13 · updated 2026-06-17
Weakness: CWE-354

Description

An issue was discovered in systemd 253. An attacker can truncate a sealed log file and then resume log sealing 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."

Affected products

systemd: 253

References

https://github.com/kastel-security/Journald
https://github.com/kastel-security/Journald/blob/main/journald-publication.pdf
https://github.com/systemd/systemd/pull/28886
https://github.com/systemd/systemd/releases
https://github.com/kastel-security/Journald
https://github.com/kastel-security/Journald/blob/main/journald-publication.pdf
https://github.com/systemd/systemd/pull/28886
https://github.com/systemd/systemd/releases

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