#VU87828 Use-after-free in Suricata - CVE-2024-23839

Vulnerability identifier: #VU87828

Vulnerability risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/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-2024-23839

CWE-ID: CWE-416

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Suricata
Server applications / IDS/IPS systems, Firewalls and proxy servers

Vendor: Open Information Security Foundation

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 when handling HTTP traffic. A remote attacker can send specially crafted data to the system and perform a denial of service (DoS) attack.

Successful exploitation of the vulnerability requires that http.request_header or http.response_header keywords are used if the ruleset.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Suricata: 7.0.0 - 7.0.2

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External links
https://github.com/OISF/suricata/security/advisories/GHSA-qxj6-hr2p-mmc7
https://github.com/OISF/suricata/commit/cd731fcaf42e5f7078c9be643bfa0cee2ad53e8f
https://redmine.openinfosecfoundation.org/issues/6657
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GOCOBFUTIFHOP2PZOH4ENRFXRBHIRKK4/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZXJIT7R53ZXROO3I256RFUWTIW4ECK6P/

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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.