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CVE

CVE-2020-10770

A flaw was found in Keycloak before 13.0.0, where it is possible to force the server to call out an unverified URL using

A flaw was found in Keycloak before 13.0.0, where it is possible to force the server to call out an unverified URL using the OIDC parameter request_uri. This flaw allows an attacker to use this parameter to execute a Server-side request forgery (SSRF) attack.

MEDIUM · CVSS 5.3 EPSS 0.92282
Act now
  • EPSS ≥ 0.50 - high probability of exploitation in the next 30 days
  • EPSS percentile: top 0% of all CVEs by exploitation likelihood
  • Public exploit or PoC is available
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-918Server-Side Request Forgery (SSRF)
CWE-918Server-Side Request Forgery (SSRF)
▤

Affected Products & Versions

1
redhat keycloak< 12.0.2
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Maven org.keycloak:keycloak-core MODERATE fixed in 13.0.0
⚠

Public Exploits & PoCs

3
webappsKeycloak 12.0.1 - 'request_uri ' Blind Server-Side Request Forgery (SSRF) (Unauthenticated)2021-10-13
nucleiKeycloak <= 12.0.1 - request_uri Blind Server-Side Request Forgery (SSRF)medium
pocpacketstormsecurity.com · Keycloak-12.0.1-Server-Side-Request-Forgery.htmlpacketstormsecurity.com
▣

Scoring & Timeline

5.3
MEDIUM · CVSS v3.1 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD15 Dec 2020 · 08:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
⚑

Vendor Advisories

4
rhsaRHSA-2021:0327Important
rhsaRHSA-2021:0319Moderate
rhsaRHSA-2021:0318Moderate
rhsaRHSA-2021:0320Moderate
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://bugzilla.redhat.com/show_bug.cgi?id=1846270Issue TrackingVendor Advisory
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