Staging Environment: Content and features may be unstable or change without notice.
Advisory details: github_osv / GHSA-c9h6-v78w-52wj
Advisory ID github_osv/GHSA-c9h6-v78w-52wj
Aliases CVE-2023-6787
Summary Keycloak vulnerable to session hijacking via re-authentication A flaw was found in Keycloak. An active keycloak session can be hijacked by initiating a new authentication (having the query parameter prompt=login) and forcing the user to enter his credentials once again. If the user cancels this re-authentication by clicking Restart login, the account takeover could take place as the new session, with a different SUB, will have the same SID as the previous session.
Status Published
Exploitability 0.5
Weighted Severity 5.9
Risk 3.0
Affected and Fixed Packages Package Details
Introduced and Fixed Package Commit Patches Package Commit Patches Details
Weaknesses (3)
CWE-287 Improper Authentication
CWE-384 Session Fixation
CWE-613 Insufficient Session Expiration
System Score Found at
cvssv3.1 6.5 https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/04/GHSA-c9h6-v78w-52wj/GHSA-c9h6-v78w-52wj.json
generic_textual MODERATE
Reference id Reference type URL
https://bugzilla.redhat.com/show_bug.cgi?id=2254375
https://github.com/keycloak/keycloak
CVE-2023-6787 https://access.redhat.com/security/cve/CVE-2023-6787
CVE-2023-6787 https://nvd.nist.gov/vuln/detail/CVE-2023-6787
GHSA-c9h6-v78w-52wj https://github.com/keycloak/keycloak/security/advisories/GHSA-c9h6-v78w-52wj
RHSA-2024:1867 https://access.redhat.com/errata/RHSA-2024:1867
RHSA-2024:1868 https://access.redhat.com/errata/RHSA-2024:1868
No exploits are available.

No EPSS data available for this advisory.

Patch URL
There are no known patches.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N Found at https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/04/GHSA-c9h6-v78w-52wj/GHSA-c9h6-v78w-52wj.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2024-04-25T19:40:17Z/

Decision: Track

Source URL: https://github.com/cisagov/vulnrichment/blob/develop/2023/6xxx/CVE-2023-6787.json

Source Advisory: vulnrichment/CVE-2023-6787

View SSVC decision tree 
[{'Exploitation': 'none'},
 {'Automatable': 'no'},
 {'Technical Impact': 'partial'},
 {'Mission Prevalence': 'minimal'},
 {'Public Well-being Impact': 'material'},
 {'Mission & Well-being': 'medium'}]