#VU85896 Path traversal in cpio - CVE-2023-7207

Vulnerability identifier: #VU85896

Vulnerability risk: High

CVSSv4.0: 5.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2023-7207

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
cpio
Client/Desktop applications / Software for archiving

Vendor: GNU

Description

The vulnerability allows a remote attacker to overwrite arbitrary files on the system.

The vulnerability exists due to input validation error when processing filenames inside cpio archives. A remote attacker can trick the victim to open a specially crafted cpio archive and overwrite arbitrary files on the system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

cpio: 1.0 - 2.13

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External links
https://bugzilla.suse.com/show_bug.cgi?id=1218571
https://git.savannah.gnu.org/cgit/cpio.git/commit/?id=376d663340a9dc91c91a5849e5713f07571c1628
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1059163

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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.