CVE-2020-3125
CVSS V2 Medium 6.8
CVSS V3 Critical 9.8
Description
A vulnerability in the Kerberos authentication feature of Cisco Adaptive Security Appliance (ASA) Software could allow an unauthenticated, remote attacker to impersonate the Kerberos key distribution center (KDC) and bypass authentication on an affected device that is configured to perform Kerberos authentication for VPN or local device access. The vulnerability is due to insufficient identity verification of the KDC when a successful authentication response is received. An attacker could exploit this vulnerability by spoofing the KDC server response to the ASA device. This malicious response would not have been authenticated by the KDC. A successful attack could allow an attacker to bypass Kerberos authentication.
Overview
- CVE ID
- CVE-2020-3125
- Assigner
- ykramarz@cisco.com
- Vulnerability Status
- Analyzed
- Published Version
- 2020-05-06T17:15:11
- Last Modified Date
- 2020-05-14T01:01:13
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| AND | ||||
| cpe:2.3:o:cisco:asa_5505_firmware:9.10\(1.220\):*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:h:cisco:asa_5505:-:*:*:*:*:*:*:* | 0 | OR | ||
| AND | ||||
| cpe:2.3:o:cisco:asa_5510_firmware:9.10\(1.220\):*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:h:cisco:asa_5510:-:*:*:*:*:*:*:* | 0 | OR | ||
| AND | ||||
| cpe:2.3:o:cisco:asa_5512-x_firmware:9.10\(1.220\):*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:h:cisco:asa_5512-x:-:*:*:*:*:*:*:* | 0 | OR | ||
| AND | ||||
| cpe:2.3:o:cisco:asa_5515-x_firmware:9.10\(1.220\):*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:h:cisco:asa_5515-x:-:*:*:*:*:*:*:* | 0 | OR | ||
| AND | ||||
| cpe:2.3:o:cisco:asa_5520_firmware:9.10\(1.220\):*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:h:cisco:asa_5520:-:*:*:*:*:*:*:* | 0 | OR | ||
| AND | ||||
| cpe:2.3:o:cisco:asa_5525-x_firmware:9.10\(1.220\):*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:h:cisco:asa_5525-x:-:*:*:*:*:*:*:* | 0 | OR | ||
| AND | ||||
| cpe:2.3:o:cisco:asa_5540_firmware:9.10\(1.220\):*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:h:cisco:asa_5540:-:*:*:*:*:*:*:* | 0 | OR | ||
| AND | ||||
| cpe:2.3:o:cisco:asa_5545-x_firmware:9.10\(1.220\):*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:h:cisco:asa_5545-x:-:*:*:*:*:*:*:* | 0 | OR | ||
| AND | ||||
| cpe:2.3:o:cisco:asa_5550_firmware:9.10\(1.220\):*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:h:cisco:asa_5550:-:*:*:*:*:*:*:* | 0 | OR | ||
| AND | ||||
| cpe:2.3:o:cisco:asa_5555-x_firmware:9.10\(1.220\):*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:h:cisco:asa_5555-x:-:*:*:*:*:*:*:* | 0 | OR | ||
| AND | ||||
| cpe:2.3:o:cisco:asa_5580_firmware:9.10\(1.220\):*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:h:cisco:asa_5580:-:*:*:*:*:*:*:* | 0 | OR | ||
| AND | ||||
| cpe:2.3:o:cisco:asa_5585-x_firmware:9.10\(1.220\):*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:h:cisco:asa_5585-x:-:*:*:*:*:*:*:* | 0 | OR | ||
| AND | ||||
| cpe:2.3:a:cisco:adaptive_security_appliance:*:*:*:*:*:*:*:* | 1 | OR | 9.8 | 9.8.4.15 |
| cpe:2.3:a:cisco:adaptive_security_appliance:*:*:*:*:*:*:*:* | 1 | OR | 9.9 | 9.9.2.66 |
| cpe:2.3:a:cisco:adaptive_security_appliance:*:*:*:*:*:*:*:* | 1 | OR | 9.10 | 9.10.1.37 |
| cpe:2.3:a:cisco:adaptive_security_appliance:*:*:*:*:*:*:*:* | 1 | OR | 9.12 | 9.12.3.2 |
| cpe:2.3:a:cisco:adaptive_security_appliance:*:*:*:*:*:*:*:* | 1 | OR | 9.13 | 9.13.1.7 |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:M/Au:N/C:P/I:P/A:P
- Access Vector
- NETWORK
- Access Compatibility
- MEDIUM
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- PARTIAL
- Availability Impact
- PARTIAL
- Base Score
- 6.8
- Severity
- MEDIUM
- Exploitability Score
- 8.6
- Impact Score
- 6.4
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- HIGH
- Base Score
- 9.8
- Base Severity
- CRITICAL
- Exploitability Score
- 3.9
- Impact Score
- 5.9
References
| Reference URL | Reference Tags |
|---|---|
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-asa-kerberos-bypass-96Gghe2sS | Vendor Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2020-3125 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-3125 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 17:32:23 | Added to TrackCVE | |||
| 2022-12-04 16:10:25 | psirt@cisco.com | ykramarz@cisco.com | CVE Assigner | updated |
| 2022-12-04 16:10:25 | 2020-05-06T17:15Z | 2020-05-06T17:15:11 | CVE Published Date | updated |
| 2022-12-04 16:10:25 | 2020-05-14T01:01:13 | CVE Modified Date | updated | |
| 2022-12-04 16:10:25 | Analyzed | Vulnerability Status | updated |