Vulnerability · Published May 13, 2020 · Assigned by redhat

CVE-2020-1714

High 7.5

In plain English

A high-severity improper input validation in keycloak from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.6% (higher than 85% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.0)7.5High

Exploit odds (30 days)2.6%top 14.6% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

A flaw was found in Keycloak before version 11.0.0, where the code base contains usages of ObjectInputStream without type checks. This flaw allows an attacker to inject arbitrarily serialized Java Objects, which would then get deserialized in a privileged context and potentially lead to remote code execution.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Maven	org.keycloak:keycloak-common	11.0.0	GHSA-m6mm-q862-j366
Maven	org.keycloak:keycloak-core	11.0.0	GHSA-m6mm-q862-j366

Affected products (as reported)

Vendor	Product	Versions
Red Hat	keycloak	before 11.0.0

Weakness: CWE-20 · Vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

References

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1714 x_refsource_CONFIRM
https://github.com/keycloak/keycloak/pull/7053 x_refsource_CONFIRM