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[email protected]CVE-2020-3125

HistoryMay 06, 2020 - 5:15 p.m.

CVE-2020-3125

2020-05-0617:15:11

CWE-287

[email protected]

web.nvd.nist.gov

cve-2020-3125

cisco

asa

software

kerberos

authentication

bypass

vulnerability

nvd

6.8 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

9.3 High

AI Score

Confidence

High

0.01 Low

EPSS

Percentile

83.4%

JSON

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.

Affected configurations

NVD

Node

ciscoasa_5505_firmwareMatch9.10\(1.220\)

AND

ciscoasa_5505Match-

Node

ciscoasa_5510_firmwareMatch9.10\(1.220\)

AND

ciscoasa_5510Match-

Node

ciscoasa_5512-x_firmwareMatch9.10\(1.220\)

AND

ciscoasa_5512-xMatch-

Node

ciscoasa_5515-x_firmwareMatch9.10\(1.220\)

AND

ciscoasa_5515-xMatch-

Node

ciscoasa_5520_firmwareMatch9.10\(1.220\)

AND

ciscoasa_5520Match-

Node

ciscoasa_5525-x_firmwareMatch9.10\(1.220\)

AND

ciscoasa_5525-xMatch-

Node

ciscoasa_5540_firmwareMatch9.10\(1.220\)

AND

ciscoasa_5540Match-

Node

ciscoasa_5545-x_firmwareMatch9.10\(1.220\)

AND

ciscoasa_5545-xMatch-

Node

ciscoasa_5550_firmwareMatch9.10\(1.220\)

AND

ciscoasa_5550Match-

Node

ciscoasa_5555-x_firmwareMatch9.10\(1.220\)

AND

ciscoasa_5555-xMatch-

Node

ciscoasa_5580_firmwareMatch9.10\(1.220\)

AND

ciscoasa_5580Match-

Node

ciscoasa_5585-x_firmwareMatch9.10\(1.220\)

AND

ciscoasa_5585-xMatch-

Node

ciscoadaptive_security_appliance_softwareRange9.8–9.8.4.15

ciscoadaptive_security_appliance_softwareRange9.9–9.9.2.66

ciscoadaptive_security_appliance_softwareRange9.10–9.10.1.37

ciscoadaptive_security_appliance_softwareRange9.12–9.12.3.2

ciscoadaptive_security_appliance_softwareRange9.13–9.13.1.7

CPENameOperatorVersion
cisco:asa_5505_firmwarecisco asa 5505 firmwareeq9.10\(1.220\)

CPE	Name	Operator	Version
cisco:asa_5505_firmware	cisco asa 5505 firmware	eq	9.10\(1.220\)

CNA Affected

[
  {
    "product": "Cisco Adaptive Security Appliance (ASA) Software ",
    "vendor": "Cisco",
    "versions": [
      {
        "status": "affected",
        "version": "n/a"
      }
    ]
  }
]

References

tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-asa-kerberos-bypass-96Gghe2sS

Social References

6.8 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

9.3 High

AI Score

Confidence

High

0.01 Low

EPSS

Percentile

83.4%

JSON

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