#VU105902 NULL pointer dereference in libarchive - CVE-2025-1632

Vulnerability identifier: #VU105902

Vulnerability risk: Low

CVSSv4.0: 1 [CVSS:4.0/AV:L/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-2025-1632

CWE-ID: CWE-476

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
libarchive
Client/Desktop applications / Software for archiving

Vendor: libarchive

Description

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

The vulnerability exists due to a NULL pointer dereference error in bsdunzip.c. 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

libarchive: 2.6.0 - 3.7.7

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External links
https://github.com/Ekkosun/pocs/blob/main/bsdunzip-poc
https://github.com/libarchive/libarchive/releases/tag/v3.7.8
https://github.com/libarchive/libarchive/pull/2532

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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.