CVE-2025-60753: libarchive DoS — Exploit & Fix

Description

An issue was discovered in libarchive bsdtar before version 3.8.1 in function apply_substitution in file tar/subst.c when processing crafted -s substitution rules. This can cause unbounded memory allocation and lead to denial of service (Out-of-Memory crash).

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CVSS v3.1 Score

5.5

MEDIUM

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

Weakness Type (CWE)

CWE-400 Uncontrolled Resource Consumption

CWE-835 CWE-835

Affected Products

Vendor	Product	Versions
libarchive	libarchive	< 3.8.1

References

Advisories & Patches

https://github.com/libarchive/libarchive/issues/2725

Exploits

https://github.com/Papya-j/CVE/tree/main/CVE-2025-60753 https://github.com/libarchive/libarchive/issues/2725

Frequently Asked Questions

What is CVE-2025-60753? +

An issue was discovered in libarchive bsdtar before version 3.8.1 in function apply_substitution in file tar/subst.c when processing crafted -s substitution rules. This can cause unbounded memory allocation and lead to denial of service (Out-of-Memory crash). It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2025-60753? +

CVE-2025-60753 has a CVSS v3.1 score of 5.5 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-2025-60753? +

CVE-2025-60753 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-2025-60753? +

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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