Overview
- Description
- A vulnerability in the implementation of Security Assertion Markup Language (SAML) 2.0 single sign-on (SSO) for remote access VPN in Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to intercept the SAML assertion of a user who is authenticating to a remote access VPN session. This vulnerability is due to insufficient validation of the login URL. An attacker could exploit this vulnerability by persuading a user to access a site that is under the control of the attacker, allowing the attacker to modify the login URL. A successful exploit could allow the attacker to intercept a successful SAML assertion and use that assertion to establish a remote access VPN session toward the affected device with the identity and permissions of the hijacked user, resulting in access to the protected network.
- Source
- ykramarz@cisco.com
- NVD status
- Modified
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 6.1
- Impact score
- 2.7
- Exploitability score
- 2.8
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- Severity
- MEDIUM
Weaknesses
- nvd@nist.gov
- NVD-CWE-noinfo
- ykramarz@cisco.com
- CWE-601
Social media
- Hype score
- Not currently trending
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "F33C25A4-E475-4F23-978A-5BCE83C38AB2",
"versionEndIncluding": "9.18.3.46",
"versionStartIncluding": "9.18.1"
},
{
"criteria": "cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "D246D5B2-7764-4631-88F0-1B8A60B77DF8",
"versionEndIncluding": "9.19.1.12",
"versionStartIncluding": "9.19.1.5"
}
],
"operator": "OR"
}
]
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:cisco:firepower_threat_defense:7.2.4:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "F6826018-5620-4924-BE92-6A245378F610"
}
],
"operator": "OR"
}
]
}
]