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

2021-04-2900:00:00

cisco

www.cve.org

5.8 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

NONE

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

6.9 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

49.1%

JSON

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.

CNA Affected

[
  {
    "vendor": "Cisco",
    "product": "Cisco Firepower Threat Defense Software ",
    "versions": [
      {
        "version": "n/a",
        "status": "affected"
      }
    ]
  }
]