#VU102516 Integer underflow in Suricata - CVE-2024-55627

Vulnerability identifier: #VU102516

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-55627

CWE-ID: CWE-191

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 an integer underflow in StreamingBufferSlideToOffsetWithRegions. A remote attacker can initiate a specially crafted TCP stream, trigger an integer underflow and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Suricata: 7.0.0 - 7.0.7

---

External links
https://github.com/OISF/suricata/commit/282509f70c4ce805098e59535af445362e3e9ebd
https://github.com/OISF/suricata/commit/8900041405dbb5f9584edae994af2100733fb4be
https://github.com/OISF/suricata/commit/9a53ec43b13f0039a083950511a18bf6f408e432
https://github.com/OISF/suricata/security/advisories/GHSA-h2mv-7gg8-8x7v
https://redmine.openinfosecfoundation.org/issues/7393

---

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.