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Vulnerability · Published Feb 26, 2024 · Assigned by GitHub_M

CVE-2024-23836crafted traffic can cause denial of service

High 7.5

In plain English

A high-severity resource allocation without limits in suricata from OISF. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.2% (higher than 67% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)1.2%top 32.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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 packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:13suricata1:7.0.3-1DEBIAN-CVE-2024-23836
Debian:14suricata1:7.0.3-1DEBIAN-CVE-2024-23836
Ubuntu:22.04:LTSsuricatano fix listedUBUNTU-CVE-2024-23836
Ubuntu:24.04:LTSsuricatano fix listedUBUNTU-CVE-2024-23836
Ubuntu:25.10suricatano fix listedUBUNTU-CVE-2024-23836
Ubuntu:26.04:LTSsuricatano fix listedUBUNTU-CVE-2024-23836
Ubuntu:26.10suricatano fix listedUBUNTU-CVE-2024-23836

Affected products (as reported)

VendorProductVersions
OISF suricata < 6.0.16>= 7.0.0, < 7.0.3

Weakness: CWE-770 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References