CVE-2021-1566
CVSS V2 Medium 5.8
CVSS V3 High 7.4
Description
A vulnerability in the Cisco Advanced Malware Protection (AMP) for Endpoints integration of Cisco AsyncOS for Cisco Email Security Appliance (ESA) and Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to intercept traffic between an affected device and the AMP servers. This vulnerability is due to improper certificate validation when an affected device establishes TLS connections. A man-in-the-middle attacker could exploit this vulnerability by sending a crafted TLS packet to an affected device. A successful exploit could allow the attacker to spoof a trusted host and then extract sensitive information or alter certain API requests.
Overview
- CVE ID
- CVE-2021-1566
- Assigner
- ykramarz@cisco.com
- Vulnerability Status
- Analyzed
- Published Version
- 2021-06-16T18:15:08
- Last Modified Date
- 2021-06-23T23:02:23
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:cisco:email_security_appliance:-:*:*:*:*:*:*:* | 1 | AND | ||
| cpe:2.3:o:cisco:asyncos:*:*:*:*:*:*:*:* | 1 | AND | 12.5.3-035 | |
| cpe:2.3:a:cisco:email_security_appliance:-:*:*:*:*:*:*:* | 1 | AND | ||
| cpe:2.3:o:cisco:asyncos:*:*:*:*:*:*:*:* | 1 | AND | 13.0 | 13.0.0-030 |
| cpe:2.3:a:cisco:email_security_appliance:-:*:*:*:*:*:*:* | 1 | AND | ||
| cpe:2.3:o:cisco:asyncos:*:*:*:*:*:*:*:* | 1 | AND | 13.5 | 13.5.3-010 |
| cpe:2.3:a:cisco:web_security_appliance:-:*:*:*:*:*:*:* | 1 | AND | ||
| cpe:2.3:o:cisco:asyncos:*:*:*:*:*:*:*:* | 1 | AND | 11.8.3-021 | |
| cpe:2.3:a:cisco:web_security_appliance:-:*:*:*:*:*:*:* | 1 | AND | ||
| cpe:2.3:o:cisco:asyncos:*:*:*:*:*:*:*:* | 1 | AND | 12.0.0 | 12.0.3-005 |
| cpe:2.3:a:cisco:web_security_appliance:-:*:*:*:*:*:*:* | 1 | AND | ||
| cpe:2.3:o:cisco:asyncos:*:*:*:*:*:*:*:* | 1 | AND | 12.5.0 | 12.5.1-043 |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:M/Au:N/C:P/I:P/A:N
- Access Vector
- NETWORK
- Access Compatibility
- MEDIUM
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- PARTIAL
- Availability Impact
- NONE
- Base Score
- 5.8
- Severity
- MEDIUM
- Exploitability Score
- 8.6
- Impact Score
- 4.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
- Attack Vector
- NETWORK
- Attack Compatibility
- HIGH
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- NONE
- Base Score
- 7.4
- Base Severity
- HIGH
- Exploitability Score
- 2.2
- Impact Score
- 5.2
References
| Reference URL | Reference Tags |
|---|---|
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-esa-wsa-cert-vali-n8L97RW | Vendor Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-1566 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1566 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 07:10:06 | Added to TrackCVE | |||
| 2022-12-05 04:33:15 | psirt@cisco.com | ykramarz@cisco.com | CVE Assigner | updated |
| 2022-12-05 04:33:15 | 2021-06-16T18:15Z | 2021-06-16T18:15:08 | CVE Published Date | updated |
| 2022-12-05 04:33:15 | 2021-06-23T23:02:23 | CVE Modified Date | updated | |
| 2022-12-05 04:33:15 | Analyzed | Vulnerability Status | updated |