CVE-2021-1494

Published Nov 15, 2024 CVSS 3.1 · 5.8 Medium EPSS 1.1% KEV · Not listed

Description

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.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Cisco

Cisco Firepower Threat Defense Software

affected

Version	Status	Constraints
`N/A`	affected	—

Cisco

Cisco UTD SNORT IPS Engine Software

affected

Version	Status	Constraints
`16.12.1a`	affected	—
`16.12.2`	affected	—
`16.12.3`	affected	—
`16.12.4`	affected	—
`16.6.1`	affected	—
`16.6.5`	affected	—
`16.6.6`	affected	—
`16.6.7a`	affected	—
`16.6.9`	affected	—
`17.1.1`	affected	—
`17.2.1r`	affected	—
`17.3.1a`	affected	—
`17.3.2`	affected	—
`3.17.0S`	affected	—
`3.17.1S`	affected	—
`Fuji-16.9.2`	affected	—
`Fuji-16.9.4`	affected	—
`Fuji-16.9.6`	affected	—
`Fuji-16.9.3`	affected	—
`Fuji-16.9.7`	affected	—
`Fuji-16.9.5`	affected	—
`Denali-16.3.3`	affected	—
`Denali-16.3.9`	affected	—
`Denali-16.3.7`	affected	—
`Denali-16.3.5`	affected	—
`Denali-16.3.4`	affected	—
`Everest-16.6.3`	affected	—
`Everest-16.6.4`	affected	—
`Everest-16.6.2`	affected	—

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

Advisories

Source	ID	Title
Debian DLA	DLA-3317-1	snort security update
Debian DSA	DSA-5354-1	snort security update
EUVD	EUVD-2021-6961	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.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact None

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: 1.1% (1.101% probability within 30 days)

Exploitation none

Automatable yes

Technical Impact partial

References

Link	Providers
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-http-fp-bp-KfDdcQhc

History

Nov 15, 2024 10:15 PM First appearance in the feed. Affected versions updated. Affected vendors updated. Scoring metrics updated View changes

Type	Values Removed	Values Added
First Time appeared		Cisco Cisco firepower Threat Defense Software Cisco utd Snort Ips Engine Software
CPEs		cpe:2.3:a:cisco:firepower_threat_defense_software:::::::: cpe:2.3:a:cisco:utd_snort_ips_engine_software::::::::
Vendors & Products		Cisco Cisco firepower Threat Defense Software Cisco utd Snort Ips Engine Software
Metrics		ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Nov 15, 2024 4:30 PM Description updated. Weaknesses updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
Description		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.
Weaknesses		CWE-693
References		https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-http-fp-bp-KfDdcQhc
Metrics		cvssV3_1 `{'score': 5.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N'}`