CVE-2025-25724: libarchive — Exploit

Description

list_item_verbose in tar/util.c in libarchive through 3.7.7 does not check an strftime return value, which can lead to a denial of service or unspecified other impact via a crafted TAR archive that is read with a verbose value of 2. For example, the 100-byte buffer may not be sufficient for a custom locale.

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CVSS v3.1 Score

4.0

MEDIUM

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L

Weakness Type (CWE)

CWE-252 CWE-252

Affected Products

Vendor	Product	Versions
libarchive	libarchive	< 3.7.7

References

Exploits

https://github.com/Ekkosun/pocs/blob/main/bsdtarbug

Other References

https://gist.github.com/Ekkosun/a83870ce7f3b7813b9b462a395e8ad92 https://github.com/libarchive/libarchive/blob/b439d586f53911c84be5e380445a8a259e19114c/tar/util.c#L751-L752

Frequently Asked Questions

What is CVE-2025-25724? +

list_item_verbose in tar/util.c in libarchive through 3.7.7 does not check an strftime return value, which can lead to a denial of service or unspecified other impact via a crafted TAR archive that is read with a verbose value of 2. For example, the 100-byte buffer may not be sufficient for a custom locale. It has a CVSS v3.1 base score of 4.0 (MEDIUM).

How severe is CVE-2025-25724? +

CVE-2025-25724 has a CVSS v3.1 score of 4.0 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-25724? +

CVE-2025-25724 affects products from libarchive, specifically: libarchive. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-25724? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2025-25724