#VU79702 Input validation error in Bzip3 - CVE-2023-29415

Vulnerability identifier: #VU79702

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-29415

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Bzip3
Universal components / Libraries / Libraries used by multiple products

Vendor: Bzip3 Project

Description

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

The vulnerability exists due to insufficient validation of user-supplied input in libbzip3.a. A remote attacker can pass a specially crafted archive to the application and perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Bzip3: 1.0.0 - 1.2.3

---

External links
https://github.com/kspalaiologos/bzip3/issues/95
https://github.com/kspalaiologos/bzip3/compare/1.2.3...1.3.0
https://security-tracker.debian.org/tracker/CVE-2023-29415
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NA7S7HDUAINOTCSWQZ5LIW756DYY22V2/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4JLSE25SV7K2NB6FTFT4UHJOJUHBHYHY/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NMLFV2FJK3CM7NJLVPZI5RUAFQZICPWW/

---

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.