CVE-2021-1495
CVSS V2 Medium 5
CVSS V3 Medium 5.3
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.
Overview
- CVE ID
- CVE-2021-1495
- Assigner
- ykramarz@cisco.com
- Vulnerability Status
- Modified
- Published Version
- 2021-04-29T18:15:09
- Last Modified Date
- 2023-02-19T04:15:12
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| AND | ||||
| cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:* | 1 | OR | 6.4.0.12 | |
| cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:* | 1 | OR | 6.5.0 | 6.6.4 |
| cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:* | 1 | OR | 6.7.0 | 6.7.0.2 |
| AND | ||||
| cpe:2.3:a:cisco:ios_xe:*:*:*:*:*:*:*:* | 1 | OR | 16.12 | 16.12.5 |
| cpe:2.3:a:snort:snort:*:*:*:*:*:*:*:* | 1 | OR | 2.9.17.1 | |
| cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:* | 1 | OR | 17.1 | 17.3.3 |
| cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:* | 1 | OR | 17.4 | 17.4.1 |
| cpe:2.3:h:cisco:c8200-1n-4t:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:c8200l-1n-4t:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:catalyst_8300-1n1s-4t2x:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:catalyst_8300-1n1s-6t:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:catalyst_8300-2n2s-4t2x:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:catalyst_8300-2n2s-6t:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:catalyst_8500l:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:isr_1100-4g\/6g:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:isr_1101:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:isr_1109:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:isr_1111x:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:isr_111x:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:isr_1120:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:isr_1160:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:isr_3000:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:isr_4221:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:isr_4331:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:isr_4431:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:isr_4461:-:*:*:*:*:*:*:* | 0 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:N/C:N/I:P/A:N
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- NONE
- Integrity Impact
- PARTIAL
- Availability Impact
- NONE
- Base Score
- 5
- Severity
- MEDIUM
- Exploitability Score
- 10
- Impact Score
- 2.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- NONE
- Availability Impact
- NONE
- Base Score
- 5.3
- Base Severity
- MEDIUM
- Exploitability Score
- 3.9
- Impact Score
- 1.4
References
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-1495 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1495 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 16:16:38 | Added to TrackCVE | |||
| 2022-12-05 01:20:09 | psirt@cisco.com | ykramarz@cisco.com | CVE Assigner | updated |
| 2022-12-05 01:20:09 | 2021-04-29T18:15Z | 2021-04-29T18:15:09 | CVE Published Date | updated |
| 2022-12-05 01:20:09 | 2022-10-27T15:47:45 | CVE Modified Date | updated | |
| 2022-12-05 01:20:09 | Analyzed | Vulnerability Status | updated | |
| 2023-02-11 03:13:25 | 2023-02-11T02:20:43 | CVE Modified Date | updated | |
| 2023-02-11 03:13:25 | Analyzed | Modified | Vulnerability Status | updated |
| 2023-02-11 03:13:26 | References | updated | ||
| 2023-02-19 05:12:32 | 2023-02-19T04:15:12 | CVE Modified Date | updated | |
| 2023-02-19 05:12:33 | References | updated |