CVE-2026-57224: CWE-400: Uncontrolled Resource Consumption in OISF suricata
CVE-2026-57224 is a medium severity vulnerability in Suricata versions 8.0.0 through 8.0.5. It involves uncontrolled resource consumption due to a defect in the DHCP and RDP parsers, which fail to record packet direction state. This causes the per-flow transaction list to grow without bound, leading to increased CPU and memory usage and potential denial of service. The issue is fixed in Suricata version 8.0.6.
AI Analysis
Technical Summary
Suricata, a network IDS/IPS and monitoring engine, has a vulnerability in versions 8.0.0 to 8.0.5 where the DHCP and RDP parsers create stateless transactions without properly recording packet direction using AppLayerTxData::for_direction(). This defect prevents sensors observing only one direction from marking the unseen direction as inspected or freeing completed transactions. Consequently, the per-flow transaction list can grow indefinitely, causing repeated cleanup scans that increase CPU and memory consumption, ultimately resulting in denial of service. The vulnerability is addressed in version 8.0.6.
Potential Impact
An attacker can cause Suricata to consume excessive CPU and memory resources by exploiting the uncontrolled growth of the per-flow transaction list. This resource exhaustion can lead to denial of service conditions, impacting the availability of the Suricata sensor. There is no impact on confidentiality or integrity reported.
Mitigation Recommendations
Upgrade Suricata to version 8.0.6 or later, where this issue is fixed. No other mitigation or workaround is indicated by the vendor advisory.
CVE-2026-57224: CWE-400: Uncontrolled Resource Consumption in OISF suricata
Description
CVE-2026-57224 is a medium severity vulnerability in Suricata versions 8.0.0 through 8.0.5. It involves uncontrolled resource consumption due to a defect in the DHCP and RDP parsers, which fail to record packet direction state. This causes the per-flow transaction list to grow without bound, leading to increased CPU and memory usage and potential denial of service. The issue is fixed in Suricata version 8.0.6.
CVSS v3.1
Score 6.5medium
Affected software
OISF
suricata
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Suricata, a network IDS/IPS and monitoring engine, has a vulnerability in versions 8.0.0 to 8.0.5 where the DHCP and RDP parsers create stateless transactions without properly recording packet direction using AppLayerTxData::for_direction(). This defect prevents sensors observing only one direction from marking the unseen direction as inspected or freeing completed transactions. Consequently, the per-flow transaction list can grow indefinitely, causing repeated cleanup scans that increase CPU and memory consumption, ultimately resulting in denial of service. The vulnerability is addressed in version 8.0.6.
Potential Impact
An attacker can cause Suricata to consume excessive CPU and memory resources by exploiting the uncontrolled growth of the per-flow transaction list. This resource exhaustion can lead to denial of service conditions, impacting the availability of the Suricata sensor. There is no impact on confidentiality or integrity reported.
Mitigation Recommendations
Upgrade Suricata to version 8.0.6 or later, where this issue is fixed. No other mitigation or workaround is indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-06-24T02:21:33.811Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6aad9c4155bf5e2cf5802951
Added to database: 09/18/2026, 20:17:05 UTC
Last enriched: 09/18/2026, 20:32:17 UTC
Last updated: 09/18/2026, 20:32:17 UTC
Views: 3
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