#VU79708 Out-of-bounds read in Bzip3 - CVE-2023-29417

Vulnerability identifier: #VU79708

Vulnerability risk: Low

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-29417

CWE-ID: CWE-125

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 attack.

The vulnerability exists due to an out-of-bounds read within the bz3_decompress() function in libbzip3.a. A remote attacker can pass 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 - 1.2.2

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External links
https://github.com/kspalaiologos/bzip3/issues/97
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/

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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.