CVE-2021-1495 MEDIUM

CVE-2021-1495: Multiple Cisco Products Snort HTTP Detection Engine File Policy Bypass Vulnerability

Vendor Cisco
Product Cisco Firepower Threat Defense Software
Published April 29, 2021
Last update November 8, 2024

CVSS base score

5.8/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

April 29, 2021 CVE published
November 8, 2024 Record updated