Overview
- Description
- It was found that Keycloak's SAML broker, versions up to 6.0.1, did not verify missing message signatures. If an attacker modifies the SAML Response and removes the <Signature> sections, the message is still accepted, and the message can be modified. An attacker could use this flaw to impersonate other users and gain access to sensitive information.
- Source
- secalert@redhat.com
- NVD status
- Analyzed
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 8.1
- Impact score
- 5.2
- Exploitability score
- 2.8
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
- Severity
- HIGH
CVSS 3.0
- Type
- Secondary
- Base score
- 8.1
- Impact score
- 5.2
- Exploitability score
- 2.8
- Vector string
- CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
- Severity
- HIGH
CVSS 2.0
- Type
- Primary
- Base score
- 5.5
- Impact score
- 4.9
- Exploitability score
- 8
- Vector string
- AV:N/AC:L/Au:S/C:P/I:P/A:N
Social media
- Hype score
- Not currently trending
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:redhat:keycloak:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "B4169303-407C-4964-8A5E-D34AC060239A",
"versionEndIncluding": "6.0.1"
},
{
"criteria": "cpe:2.3:a:redhat:single_sign-on:7.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "9EFEC7CA-8DDA-48A6-A7B6-1F1D14792890"
},
{
"criteria": "cpe:2.3:a:redhat:single_sign-on:7.3.3:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "5463868E-60F5-4E8F-AC8F-82AA4088E1FB"
}
],
"operator": "OR"
}
]
}
]