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medium5.3

CVE-2021-1236

Multiple Cisco products are affected by a vulnerability in the Snort application detection engine that could allow an unauthenticated, remote attacker to bypas…

Impact

Multiple Cisco products are affected by a vulnerability in the Snort application detection engine that could allow an unauthenticated, remote attacker to bypass the configured policies on an affected system. The vulnerability is due to a flaw in the detection algorithm. An attacker could exploit this vulnerability by sending crafted packets that would flow through an affected system. A successful exploit could allow the attacker to bypass the configured policies and deliver a malicious payload to the protected network.

Affected products

VendorProductAffected versions
CiscoIos Xe
before 17.4.1
CiscoSecure Firewall Management Center
Versions 2.9.14.0, 2.9.14.14, 2.9.15, 2.9.16, 2.9.17
CiscoSecure Firewall Threat Defense
before 6.5.0.5
SnortSnort
before 2.9.14

Weakness classification

CWE-670

References