CVE-2021-1495

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. 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.

5.3 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

5.0 /10

CVSS v2.0 : MEDIUM

V2 Legend

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

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

References
Link Resource
https://lists.debian.org/debian-lts-announce/2023/02/msg00011.html
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-http-fp-bp-KfDdcQhc Vendor Advisory
https://www.debian.org/security/2023/dsa-5354
Configurations

Configuration 1 (hide)

OR cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*

Configuration 2 (hide)

AND
OR cpe:2.3:a:cisco:ios_xe:*:*:*:*:*:*:*:*
cpe:2.3:a:snort:snort:*:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*
OR cpe:2.3:h:cisco:1100-4g\/6g_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1101_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1109_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1111x_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:111x_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1120_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1160_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:3000_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:4221_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:4331_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:4431_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:4461_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:c8200-1n-4t:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:c8200l-1n-4t:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_8300-1n1s-4t2x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_8300-1n1s-6t:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_8300-2n2s-4t2x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_8300-2n2s-6t:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_8500l:-:*:*:*:*:*:*:*
History

22 May 2023, 18:57

Type Values Removed Values Added
CPE cpe:2.3:h:cisco:isr_1100-4g\/6g:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_4461:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1101:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1120:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1111x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_3000:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1160:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_4221:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_4431:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_111x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_4331:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1109:-:*:*:*:*:*:*:*		 cpe:2.3:h:cisco:1160_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:4221_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1109_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:4331_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1100-4g\/6g_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:3000_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1120_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:4461_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1111x_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:111x_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:4431_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1101_integrated_services_router:-:*:*:*:*:*:*:*

19 Feb 2023, 04:15

Type Values Removed Values Added
References
  • (MLIST) https://lists.debian.org/debian-lts-announce/2023/02/msg00011.html -
  • (DEBIAN) https://www.debian.org/security/2023/dsa-5354 -

27 Oct 2022, 15:47

Type Values Removed Values Added
CPE cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*
Information

Published : 2021-04-29 18:15

Updated : 2024-02-04 21:47

NVD link : CVE-2021-1495

Mitre link : CVE-2021-1495

CVE.ORG link : CVE-2021-1495

JSON object : View

Products Affected

cisco

  • firepower_threat_defense
  • catalyst_8500l
  • 1120_integrated_services_router
  • 4431_integrated_services_router
  • catalyst_8300-2n2s-6t
  • c8200l-1n-4t
  • catalyst_8300-2n2s-4t2x
  • 4461_integrated_services_router
  • 111x_integrated_services_router
  • 1109_integrated_services_router
  • 1111x_integrated_services_router
  • 4331_integrated_services_router
  • catalyst_8300-1n1s-6t
  • 3000_integrated_services_router
  • catalyst_8300-1n1s-4t2x
  • 1100-4g\/6g_integrated_services_router
  • c8200-1n-4t
  • 1101_integrated_services_router
  • ios_xe
  • 4221_integrated_services_router
  • 1160_integrated_services_router

snort

  • snort
CWE
CWE-755

Improper Handling of Exceptional Conditions