#VU42413 Permissions, Privileges, and Access Controls in systemd - CVE-2013-4392

Vulnerability identifier: #VU42413

Vulnerability risk: Medium

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2013-4392

CWE-ID: CWE-264

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
systemd
Server applications / Other server solutions

Vendor: Freedesktop.org

Description

The vulnerability allows a remote non-authenticated attacker to read and manipulate data.

systemd, when updating file permissions, allows local users to change the permissions and SELinux security contexts for arbitrary files via a symlink attack on unspecified files.

Mitigation
Install update from vendor's website.

Vulnerable software versions

systemd: All versions

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External links
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=725357
https://www.openwall.com/lists/oss-security/2013/10/01/9
https://bugzilla.redhat.com/show_bug.cgi?id=859060

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.