CVE & CISA-KEV Catalog

CVE-2023-6787

MEDIUM
6.5
CVSS v3
NVD

Description

A flaw was found in Keycloak that occurs from an error in the re-authentication mechanism within org.keycloak.authentication. This flaw allows hijacking an active Keycloak session by triggering a new authentication process with the query parameter "prompt=login," prompting the user to re-enter their credentials. If the user cancels this re-authentication by selecting "Restart login," an account takeover may occur, as the new session, with a different SUB, will possess the same SID as the previous session.

CWE-287Improper Authentication

How to fix

Remediation Available
rhbk/keycloakRed Hat / RHEL
Fixed in:rhel9@sha256:3787bdf294019d8a0f57f7d7e11da98522205de2625c7f287a1d00e11a5b2d83_ppc64leRHSA-2024:1867
Fixed in:rhel9-operator@sha256:1f5fe6756a3767d1ca8cf3f79c9c14054012f73977602af5c1fc6c5e224fac52_ppc64leRHSA-2024:1867
Fixed in:rhel9@sha256:20d135d4d422505497c9aa85afb6acb2d9378191358632700e1ce0f259507583_s390xRHSA-2024:1867
Fixed in:rhel9-operator@sha256:be417b344db10adf963d1f64c94e2d214e205489e03395dc508074d783e6422e_s390xRHSA-2024:1867
Fixed in:rhel9@sha256:a462539eeff9638d642f13eb2dbc04a47cc39198a7f52d8b6eb07e1e14d783fd_amd64RHSA-2024:1867
Fixed in:operator-bundle@sha256:a47cee9b95ed78d7895c2582772abe3ccf239259ee3fbc2d7df8594450dc32f9_amd64RHSA-2024:1867
Fixed in:rhel9-operator@sha256:06aa39709dbbd870a14be493bdd452243f700d2910072044ea0d7f8e4abe50b2_amd64RHSA-2024:1867
rhbk/keycloakRocky
Fixed in:rhel9@sha256:3787bdf294019d8a0f57f7d7e11da98522205de2625c7f287a1d00e11a5b2d83_ppc64leRHSA-2024:1867
Fixed in:rhel9-operator@sha256:1f5fe6756a3767d1ca8cf3f79c9c14054012f73977602af5c1fc6c5e224fac52_ppc64leRHSA-2024:1867
Fixed in:rhel9@sha256:20d135d4d422505497c9aa85afb6acb2d9378191358632700e1ce0f259507583_s390xRHSA-2024:1867
Fixed in:rhel9-operator@sha256:be417b344db10adf963d1f64c94e2d214e205489e03395dc508074d783e6422e_s390xRHSA-2024:1867
Fixed in:rhel9@sha256:a462539eeff9638d642f13eb2dbc04a47cc39198a7f52d8b6eb07e1e14d783fd_amd64RHSA-2024:1867
Fixed in:operator-bundle@sha256:a47cee9b95ed78d7895c2582772abe3ccf239259ee3fbc2d7df8594450dc32f9_amd64RHSA-2024:1867
Fixed in:rhel9-operator@sha256:06aa39709dbbd870a14be493bdd452243f700d2910072044ea0d7f8e4abe50b2_amd64RHSA-2024:1867

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionRequired
ScopeUnchanged

Impact

ConfidentialityNone
IntegrityHigh
AvailabilityNone

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

Exploit Intelligence

0.74%probability of exploitation in 30 days
50thpercentile

Moderate risk: more likely to be exploited than 50% of all known CVEs.

References

Related Vulnerabilities

Other CWE-287 (Improper Authentication) vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2023-35082Critical9.8100%KEV + RansomFix
CVE-2023-35078Critical9.8100%KEV + RansomFix
CVE-2017-7921Critical9.8100%KEV-
CVE-2024-7593Critical9.8100%KEV-
CVE-2023-46805High8.2100%KEV + Ransom-
CVE-2022-40684Critical9.8100%KEV + RansomFix
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-06-30.