Description
Multiple Cisco products are affected by a vulnerability in the Snort Intrusion Prevention System (IPS) rule engine that could allow an unauthenticated, remote attacker to bypass the configured rules on an affected system. This vulnerability is due to incorrect HTTP packet handling. An attacker could exploit this vulnerability by sending crafted HTTP packets through an affected device. A successful exploit could allow the attacker to bypass configured IPS rules and allow uninspected traffic onto the network.
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
Low
Availability
None
Affected products
- Cisco / Cisco Firepower Threat Defense Software7.4.0 – 7.4.0
- Cisco / Cisco UTD SNORT IPS Engine Software17.6.4 – 17.6.4
- Cisco / Cisco UTD SNORT IPS Engine Software17.6.5 – 17.6.5
- Cisco / Cisco UTD SNORT IPS Engine Software17.12.1a – 17.12.1a
- Cisco / Cisco UTD SNORT IPS Engine Software17.12.2 – 17.12.2
- Cisco / secure_firewall_threat_defense7.4.0 – 7.4.0
- Cisco / snort3.0.0-233 – 3.1.69.0
- Cisco / unified_threat_defense_snort_intrusion_prevention_system_engine17.6.4 – 17.6.4
- Cisco / unified_threat_defense_snort_intrusion_prevention_system_engine17.6.5 – 17.6.5
- Cisco / unified_threat_defense_snort_intrusion_prevention_system_engine17.12.1a – 17.12.1a
- Cisco / unified_threat_defense_snort_intrusion_prevention_system_engine17.12.2 – 17.12.2
Updated 27m ago · 8 sources