CVE-2021-1422
CVSS V2 Medium 6.8
CVSS V3 High 7.7
Description
A vulnerability in the software cryptography module of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, remote attacker or an unauthenticated attacker in a man-in-the-middle position to cause an unexpected reload of the device that results in a denial of service (DoS) condition. The vulnerability is due to a logic error in how the software cryptography module handles specific types of decryption errors. An attacker could exploit this vulnerability by sending malicious packets over an established IPsec connection. A successful exploit could cause the device to crash, forcing it to reload. Important: Successful exploitation of this vulnerability would not cause a compromise of any encrypted data. Note: This vulnerability affects only Cisco ASA Software Release 9.16.1 and Cisco FTD Software Release 7.0.0.
Overview
- CVE ID
- CVE-2021-1422
- Assigner
- ykramarz@cisco.com
- Vulnerability Status
- Analyzed
- Published Version
- 2021-07-16T13:15:08
- Last Modified Date
- 2022-05-31T12:08:33
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| AND | ||||
| cpe:2.3:o:cisco:adaptive_security_appliance_software:9.16.1:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:cisco:firepower_threat_defense:7.0.0.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:cisco:adaptive_security_virtual_appliance:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:firepower_2100:-:*:*:*:*:*:*:* | 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:ftd_virtual:-:*:*:*:*:*:*:* | 0 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:S/C:N/I:N/A:C
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- SINGLE
- Confidentiality Impact
- NONE
- Integrity Impact
- NONE
- Availability Impact
- COMPLETE
- Base Score
- 6.8
- Severity
- MEDIUM
- Exploitability Score
- 8
- Impact Score
- 6.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- LOW
- User Interaction
- NONE
- Scope
- CHANGED
- Confidentiality Impact
- NONE
- Availability Impact
- HIGH
- Base Score
- 7.7
- Base Severity
- HIGH
- Exploitability Score
- 3.1
- Impact Score
- 4
References
| Reference URL | Reference Tags |
|---|---|
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-ftd-ipsec-dos-TFKQbgWC | Vendor Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-1422 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1422 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 06:58:16 | Added to TrackCVE | |||
| 2022-12-05 06:20:23 | psirt@cisco.com | ykramarz@cisco.com | CVE Assigner | updated |
| 2022-12-05 06:20:23 | 2021-07-16T13:15Z | 2021-07-16T13:15:08 | CVE Published Date | updated |
| 2022-12-05 06:20:23 | 2022-05-31T12:08:33 | CVE Modified Date | updated | |
| 2022-12-05 06:20:23 | Analyzed | Vulnerability Status | updated |