CVE-2021-1495 - Improper Handling of Exceptional Conditions

Severity

53%

Complexity

39%

Confidentiality

23%

Multiple Cisco products are affected by a vulnerability in the Snort detection engine that could allow an unauthenticated, remote attacker to bypass a configured file policy for HTTP. The vulnerability is due to incorrect handling of specific HTTP header parameters. An attacker could exploit this vulnerability by sending crafted HTTP packets through an affected device. A successful exploit could allow the attacker to bypass a configured file policy for HTTP packets and deliver a malicious payload.

CVSS 3.1 Base Score 5.3. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N).

CVSS 2.0 Base Score 5. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:P/A:N).

Overview

First reported 4 years ago

2021-04-29 18:15:00

Last updated 4 years ago

2021-05-09 02:35:00

Affected Software

Cisco Firepower Threat Defense (FTD)

References

20210428 Multiple Cisco Products Snort HTTP Detection Engine File Policy Bypass Vulnerability

20210428 Multiple Cisco Products Snort HTTP Detection Engine File Policy Bypass Vulnerability

Vendor Advisory

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