#VU103687 Buffer overflow in Glibc - CVE-2025-0395

Vulnerability identifier: #VU103687

Vulnerability risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2025-0395

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Glibc
Universal components / Libraries / Libraries used by multiple products

Vendor: GNU

Description

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

The vulnerability exists due to a boundary error when the assert() function fails. A remote attacker can trigger memory corruption and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Glibc: 2.13 - 2.40.9000

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External links
https://sourceware.org/bugzilla/show_bug.cgi?id=32582
https://sourceware.org/git/?p=glibc.git;a=blob;f=advisories/GLIBC-SA-2025-0001
https://sourceware.org/pipermail/libc-announce/2025/000044.html
https://www.openwall.com/lists/oss-security/2025/01/22/4
https://www.openwall.com/lists/oss-security/2025/01/22/4
https://www.openwall.com/lists/oss-security/2025/01/23/2

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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.