Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2021-1495

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.

Published

2021-04-29T18:15:09.430

Last Modified

2024-11-21T05:44:28.830

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 5.8 (MEDIUM)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:P/A:N

  • Access Vector: NETWORK
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: NONE
  • Integrity Impact: PARTIAL
  • Availability Impact: NONE
Exploitability Score

10.0

Impact Score

2.9

Weaknesses
  • Type: Primary
    CWE-755
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application cisco firepower_threat_defense < 6.4.0.12 Yes
Application cisco firepower_threat_defense < 6.6.4 Yes
Application cisco firepower_threat_defense < 6.7.0.2 Yes
Application cisco ios_xe < 16.12.5 Yes
Application snort snort < 2.9.17.1 Yes
Operating System cisco ios_xe < 17.3.3 Yes
Operating System cisco ios_xe < 17.4.1 Yes
Hardware cisco 1100-4g\/6g_integrated_services_router - No
Hardware cisco 1101_integrated_services_router - No
Hardware cisco 1109_integrated_services_router - No
Hardware cisco 1111x_integrated_services_router - No
Hardware cisco 111x_integrated_services_router - No
Hardware cisco 1120_integrated_services_router - No
Hardware cisco 1160_integrated_services_router - No
Hardware cisco 3000_integrated_services_router - No
Hardware cisco 4221_integrated_services_router - No
Hardware cisco 4331_integrated_services_router - No
Hardware cisco 4431_integrated_services_router - No
Hardware cisco 4461_integrated_services_router - No
Hardware cisco c8200-1n-4t - No
Hardware cisco c8200l-1n-4t - No
Hardware cisco catalyst_8300-1n1s-4t2x - No
Hardware cisco catalyst_8300-1n1s-6t - No
Hardware cisco catalyst_8300-2n2s-4t2x - No
Hardware cisco catalyst_8300-2n2s-6t - No
Hardware cisco catalyst_8500l - No
References