#VU67558 Out-of-bounds read in libconfuse - CVE-2022-40320

Vulnerability identifier: #VU67558

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-40320

CWE-ID: CWE-125

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
libconfuse
Other software / Other software solutions

Vendor: martinh (Martin Hedenfalk)

Description

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

The vulnerability exists due to a heap-based buffer over-read within the cfg_tilde_expand() function in confuse.c. A remote attacker can perform a denial of service attack.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

libconfuse: 2.0 - 3.3

---

External links
https://github.com/libconfuse/libconfuse/issues/163
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EDUT2V62V2XF2IT5TJFPB6P3EQ6X5VLL/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FJKHAPJ6AUWVP4HDGKH4M5A2XXWQI73O/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BSAZK4KAWRWNAFUBBXOYU3PVNH3X7226/

---

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.