VYPR
← All advisories
Medium severity5.8NVD Advisory· Published Sep 25, 2024· Updated Jun 17, 2026

CVE-2024-20508

CVE-2024-20508

Description

A vulnerability in Cisco Unified Threat Defense (UTD) Snort Intrusion Prevention System (IPS) Engine for Cisco IOS XE Software could allow an unauthenticated, remote attacker to bypass configured security policies or cause a denial of service (DoS) condition on an affected device.

This vulnerability is due to insufficient validation of HTTP requests when they are processed by Cisco UTD Snort IPS Engine. An attacker could exploit this vulnerability by sending a crafted HTTP request through an affected device. A successful exploit could allow the attacker to trigger a reload of the Snort process. If the action in case of Cisco UTD Snort IPS Engine failure is set to the default, fail-open, successful exploitation of this vulnerability could allow the attacker to bypass configured security policies. If the action in case of Cisco UTD Snort IPS Engine failure is set to fail-close, successful exploitation of this vulnerability could cause traffic that is configured to be inspected by Cisco UTD Snort IPS Engine to be dropped.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

19
  • Cisco Systems, Inc./Unified Threat Defense Snort Intrusion Prevention System Engine16 versions
    cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.11.1a:*:*:*:*:*:*:*+ 15 more
    • cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.11.1a:*:*:*:*:*:*:*
    • cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.1a:*:*:*:*:*:*:*
    • cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.2:*:*:*:*:*:*:*
    • cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.3:*:*:*:*:*:*:*
    • cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.3a:*:*:*:*:*:*:*
    • cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.4:*:*:*:*:*:*:*
    • cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.13.1a:*:*:*:*:*:*:*
    • cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.14.1a:*:*:*:*:*:*:*
    • cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.15.1a:*:*:*:*:*:*:*
    • cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.6.1a:*:*:*:*:*:*:*
    • cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.6.2:*:*:*:*:*:*:*
    • cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.6.6:*:*:*:*:*:*:*
    • cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.7.1a:*:*:*:*:*:*:*
    • cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.7.2:*:*:*:*:*:*:*
    • cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.8.1a:*:*:*:*:*:*:*
    • cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.9.5a:*:*:*:*:*:*:*
  • Cisco Systems, Inc./Unified Threat Defense Snort Intrusion Prevention Systemllm-create
  • Cisco Systems, Inc./IOS and IOS XE Softwarellm-fuzzy
  • Cisco/Cisco UTD SNORT IPS Engine Softwarev5
    Range: 17.12.1a

Patches

Vulnerability mechanics

References

1

News mentions

0

No linked articles in our index yet.