CVE-2021-1402
CVSS V2 High 7.8
CVSS V3 High 8.6
Description
A vulnerability in the software-based SSL/TLS message handler of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to trigger a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient validation of SSL/TLS messages when the device performs software-based SSL decryption. An attacker could exploit this vulnerability by sending a crafted SSL/TLS message through an affected device. SSL/TLS messages sent to an affected device do not trigger this vulnerability. A successful exploit could allow the attacker to cause a process to crash. This crash would then trigger a reload of the device. No manual intervention is needed to recover the device after the reload.
Overview
- CVE ID
- CVE-2021-1402
- Assigner
- ykramarz@cisco.com
- Vulnerability Status
- Analyzed
- Published Version
- 2021-04-29T18:15:08
- Last Modified Date
- 2022-08-05T16:17:05
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| AND | ||||
| cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:* | 1 | OR | 6.3.0 | 6.4.0 |
| cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:* | 1 | OR | 6.5.0 | 6.6.0 |
| cpe:2.3:a:cisco:firepower_threat_defense_virtual:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:asa_5512-x:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:asa_5515-x:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:asa_5525-x:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:asa_5545-x:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:asa_5555-x:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:firepower_1010:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:firepower_1120:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:firepower_1140:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:firepower_1150:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:firepower_2110:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:firepower_2120:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:firepower_2130:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:firepower_2140:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:isa_3000:-:*:*:*:*:*:*:* | 0 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:N/C:N/I:N/A:C
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- NONE
- Integrity Impact
- NONE
- Availability Impact
- COMPLETE
- Base Score
- 7.8
- Severity
- HIGH
- Exploitability Score
- 10
- Impact Score
- 6.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- CHANGED
- Confidentiality Impact
- NONE
- Availability Impact
- HIGH
- Base Score
- 8.6
- Base Severity
- HIGH
- Exploitability Score
- 3.9
- Impact Score
- 4
References
| Reference URL | Reference Tags |
|---|---|
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-ssl-decrypt-dos-DdyLuK6c | Vendor Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-1402 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1402 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 16:16:37 | Added to TrackCVE | |||
| 2022-12-05 01:19:16 | psirt@cisco.com | ykramarz@cisco.com | CVE Assigner | updated |
| 2022-12-05 01:19:16 | 2021-04-29T18:15Z | 2021-04-29T18:15:08 | CVE Published Date | updated |
| 2022-12-05 01:19:16 | 2022-08-05T16:17:05 | CVE Modified Date | updated | |
| 2022-12-05 01:19:16 | Analyzed | Vulnerability Status | updated |