CVE-2024-55629

moderate-risk
Published 2025-01-06

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 7.0.8, TCP streams with TCP urgent data (out of band data) can lead to Suricata analyzing data differently than the applications at the TCP endpoints, leading to possible evasions. Suricata 7.0.8 includes options to allow users to configure how to handle TCP urgent data. In IPS mode, you can use a rule such as drop tcp any any -> any any (sid:1; tcp.flags:U*;) to drop all the packets with urgent flag set.

Do I need to act?

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0.65% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Oisf

References (4)

Patch https://github.com/OISF/suricata/commit/6882bcb3e51bd3cf509fb6569cc30f48d7bb53d7
Patch https://github.com/OISF/suricata/commit/779f9d8ba35c3f9b5abfa327d3a4209861bd2eb8
Vendor Advisory https://github.com/OISF/suricata/security/advisories/GHSA-69wr-vhwg-84h2
Permissions Required https://redmine.openinfosecfoundation.org/issues/7411
33
/ 100
moderate-risk
Severity 26/34 · High
Exploitability 2/34 · Minimal
Exposure 5/34 · Minimal