#VU111147 Out-of-bounds read in libarchive - CVE-2025-5918

Vulnerability identifier: #VU111147

Vulnerability risk: Medium

CVSSv4.0: 1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2025-5918

CWE-ID: CWE-125

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 gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition when file streams are piped into bsdtar. A remote attacker can create a specially crafted file, trick the victim into opening it, trigger an out-of-bounds read error and read contents of memory on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

libarchive: 3.0 - 3.7.9

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External links
https://bugzilla.redhat.com/show_bug.cgi?id=2370877
https://github.com/libarchive/libarchive/pull/2584
https://github.com/libarchive/libarchive/releases/tag/v3.8.0

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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.