#VU106997 Use-after-free in rust-openssl - CVE-2025-24898

Vulnerability identifier: #VU106997

Vulnerability risk: Medium

CVSSv4.0: 6.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2025-24898

CWE-ID: CWE-416

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
rust-openssl
Universal components / Libraries / Libraries used by multiple products

Vendor: Steven Fackler

Description

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

The vulnerability exists due to a use-after-free error within the ssl::select_next_proto() function. A remote attacker can trigger a use-after-free error and crash the server or read arbitrary memory contents.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

rust-openssl: 0.10.0 - 0.10.69

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External links
https://github.com/sfackler/rust-openssl/pull/2360
https://github.com/sfackler/rust-openssl/security/advisories/GHSA-rpmj-rpgj-qmpm
https://lists.debian.org/debian-lts-announce/2025/02/msg00009.html

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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.