What is CVE-2023-31439?

CVE-2023-31439 is a vulnerability discovered in systemd 253 that allows an attacker to modify the contents of past events in a sealed log file without detection.

What is the severity of CVE-2023-31439?

The severity of CVE-2023-31439 is medium, with a severity score of 5.3.

Can an attacker modify log files without detection in systemd 253?

Yes, an attacker can modify the contents of past events in a sealed log file in systemd 253 without detection.

Are there any known fixes or patches for CVE-2023-31439?

At the moment, there are no known fixes or patches available for CVE-2023-31439. It is advised to follow the recommendations provided by the vendor or project maintainers.

Is there additional information available about CVE-2023-31439?

Yes, additional information about CVE-2023-31439 can be found in the references provided: [link 1](https://github.com/kastel-security/Journald), [link 2](https://github.com/kastel-security/Journald/blob/main/journald-publication.pdf), [link 3](https://github.com/systemd/systemd/releases).

Vulnerability/
CVE-2023-31439

medium

5.3

CWE

354

13/6/2023

2/8/2024

CVE-2023-31439

First published: Tue Jun 13 2023(Updated: )

** DISPUTED ** 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."

Credit: cve@mitre.org cve@mitre.org

Affected Software	Affected Version	How to fix
Systemd Project Systemd	=253
	=253

Remedy

https://github.com/kastel-security/Journald

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Reference Links

Frequently Asked Questions

What is CVE-2023-31439?
CVE-2023-31439 is a vulnerability discovered in systemd 253 that allows an attacker to modify the contents of past events in a sealed log file without detection.
What is the severity of CVE-2023-31439?
The severity of CVE-2023-31439 is medium, with a severity score of 5.3.
Can an attacker modify log files without detection in systemd 253?
Yes, an attacker can modify the contents of past events in a sealed log file in systemd 253 without detection.
Are there any known fixes or patches for CVE-2023-31439?
At the moment, there are no known fixes or patches available for CVE-2023-31439. It is advised to follow the recommendations provided by the vendor or project maintainers.
Is there additional information available about CVE-2023-31439?
Yes, additional information about CVE-2023-31439 can be found in the references provided: [link 1](https://github.com/kastel-security/Journald), [link 2](https://github.com/kastel-security/Journald/blob/main/journald-publication.pdf), [link 3](https://github.com/systemd/systemd/releases).

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agent/last-modified-date
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agent/status
agent/softwarecombine
agent/tags
agent/description
agent/event
status/disputed
vendor/systemd project
canonical/systemd project systemd
version/systemd project systemd/253

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