Vulnerability · Published May 4, 2020 · Assigned by apache

CVE-2020-1959

Critical 9.8

In plain English

A critical-severity security flaw in Apache Syncope. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 5.0% (higher than 92% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)9.8Critical

Exploit odds (30 days)5.0%top 7.8% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

A Server-Side Template Injection was identified in Apache Syncope prior to 2.1.6 enabling attackers to inject arbitrary Java EL expressions, leading to an unauthenticated Remote Code Execution (RCE) vulnerability. Apache Syncope uses Java Bean Validation (JSR 380) custom constraint validators. When building custom constraint violation error messages, they support different types of interpolation, including Java EL expressions. Therefore, if an attacker can inject arbitrary data in the error message template being passed, they will be able to run arbitrary Java code.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Maven	org.apache.syncope:syncope-core	2.1.6	GHSA-vjqw-r3ww-wj2w

Affected products (as reported)

Vendor	Product	Versions
n/a	Apache Syncope	Apache Syncope 2.1.X releases prior to 2.1.6

References

http://syncope.apache.org/security x_refsource_MISC