systemd 'systemd-logind' Insecure File Creation Vulnerability

BID:52230

Info

systemd 'systemd-logind' Insecure File Creation Vulnerability

Bugtraq ID: 52230
Class: Design Error
CVE: CVE-2012-0871
Remote: No
Local: Yes
Published: Feb 29 2012 12:00AM
Updated: Apr 13 2015 09:19PM
Credit: Disclosed in the SUSE advisory.
Vulnerable: systemd systemd 0
Not Vulnerable:

Discussion

systemd 'systemd-logind' Insecure File Creation Vulnerability

systemd package is prone to a vulnerability in the 'systemd-logind' daemon because it creates certain files in an insecure manner.

An attacker with local access could potentially exploit this issue to perform symbolic-link attacks with root privileges.

Successfully mounting a symlink attack may allow the attacker to corrupt sensitive files in the context of root user. Other attacks may also be possible.

Exploit / POC

systemd 'systemd-logind' Insecure File Creation Vulnerability

An attacker can use readily available commands to exploit this issue.

Solution / Fix

systemd 'systemd-logind' Insecure File Creation Vulnerability

Solution:
Updates are available. Please see the references for more information.

References

systemd 'systemd-logind' Insecure File Creation Vulnerability

References:
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