Vulnerability identifier: #VU82977

Vulnerability risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-46228

CWE-ID: CWE-190

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Zchunk
/

Vendor: Zchunk

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to integer overflow when processing files in lib/comp/comp.c, lib/comp/zstd/zstd.c, lib/dl/multipart.c, and lib/header.c. A remote attacker can pass specially crafted file to the application, trigger an integer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Zchunk: 0.2.0 - 1.3.1

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External links
http://bugzilla.suse.com/show_bug.cgi?id=1216268
http://github.com/zchunk/zchunk/commit/08aec2b4dfd7f709b6e3d511411ffcc83ed4efbe
http://github.com/zchunk/zchunk/compare/1.3.1...1.3.2

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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.