Denial of service in pkgconf

1) Resource management error

EUVDB-ID: #VU72137

Risk: Low

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

CVE-ID: CVE-2023-24056

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to variable duplication in libpkgconf/tuple.c:pkgconf_tuple_parse, which may cause unbounded string expansion. A remote attacker can trick the victim to open a specially crafted .pc file containing a few hundred bytes that can expand to one billion bytes, resulting in a denial of service condition.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

pkgconf: 0.1 - 1.9.3

CPE2.3

• cpe:2.3:a:pkgconf:pkgconf:0.1:*:*:*:*:*:*:*
• cpe:2.3:a:pkgconf:pkgconf:0.1.1:*:*:*:*:*:*:*
• cpe:2.3:a:pkgconf:pkgconf:0.2:*:*:*:*:*:*:*

External links

https://gitea.treehouse.systems/ariadne/pkgconf/commit/628b2b2bafa5d3a2017193ddf375093e70666059
https://nullprogram.com/blog/2023/01/18/

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.