Medium severity · published Jun 12, 2019
CVE-2019-10157
It was found that Keycloak's Node.js adapter before version 4.8.3 did not properly verify the web token received from the server in its backchannel logout
5.5
CVSS
0.2%
EPSS
No
On KEV
Description
It was found that Keycloak's Node.js adapter before version 4.8.3 did not properly verify the web token received from the server in its backchannel logout . An attacker with local access could use this to construct a malicious web token setting an NBF parameter that could prevent user access indefinitely.
CVSS vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 11% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Keycloak · Redhat
before 4.8.3 · source: NVD
SS
Single Sign-on · Redhat
before 7.3.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-10157
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-10157
Third Party Advisory
http://www.securityfocus.com/bid/108734
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-10157
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