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CVE-2023-31439

MEDIUM
5.3
CVSS Score
Published: June 13, 2023 at 12:00 AM UTC
Updated: June 17, 2026 at 05:56 AM UTC
1 product affected across 1 vendorSystemd

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.3%

Description

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."

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (4)

PatchThird Party Advisory
Source: [email protected]
https://github.com/kastel-security/Journald
Technical Description
Source: [email protected]
https://github.com/kastel-security/Journald/blob/main/journald-publication.pdf
Source: [email protected]
https://github.com/systemd/systemd/pull/28885
Release Notes
Source: [email protected]
https://github.com/systemd/systemd/releases

CVSS

5.3MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-354

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