What’s Vulnerable › Vulnerabilities
CVE-2024-23836: crafted traffic can cause denial of service
- Severity: high (CVSS 7.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 1.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2024-02-26 · updated 2026-06-17
- Weakness: CWE-770
Description
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to versions 6.0.16 and 7.0.3, an attacker can craft traffic to cause Suricata to use far more CPU and memory for processing the traffic than needed, which can lead to extreme slow downs and denial of service. This vulnerability is patched in 6.0.16 or 7.0.3. Workarounds include disabling the affected protocol app-layer parser in the yaml and reducing the `stream.reassembly.depth` value helps reduce the severity of the issue.
Affected products
- Fedoraproject Fedora: 38, 39
- OISF suricata: before 6.0.16; from 7.0.0 before 7.0.3 — fixed in 6.0.16, 7.0.3
How to fix
Upgrade to a fixed version: OISF suricata 6.0.16, 7.0.3. Check the vendor advisory for mitigations.
References
- https://github.com/OISF/suricata/commit/18841a58da71e735ddf4e52cbfa6989755ecbeb7
- https://github.com/OISF/suricata/commit/2a2120ecf10c5b5713ec2bf59469fe57f7b5b747
- https://github.com/OISF/suricata/commit/83c5567ea7b0b28376f57dcfee9c6301448c7bc7
- https://github.com/OISF/suricata/commit/8efaebe293e2a74c8e323fa85a6f5fadf82801bc
- https://github.com/OISF/suricata/commit/97953998d2d60673ed6c30ddfb6a2d59b4230f97
- https://github.com/OISF/suricata/commit/b1549e930f6426eeff43f12b672337cbcda566b8
- https://github.com/OISF/suricata/commit/cd035d59e3df157b606f4fe67324ea8e437be786
- https://github.com/OISF/suricata/commit/ce9b90326949c94a46611d6394e28600ee5e8bd5
- https://github.com/OISF/suricata/commit/e7e28822f473320658d6125f16ac3f0524baff01
- https://github.com/OISF/suricata/commit/f9de1cca6182e571f1c02387dca6e695e55608af
- https://github.com/OISF/suricata/security/advisories/GHSA-q33q-45cr-3cpc
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GOCOBFUTIFHOP2PZOH4ENRFXRBHIRKK4/
Get alerted when CVE-2024-23836 or the next vulnerability affects your stack