CVEvulnerability

CVE-2020-1959

9.8 CRITICAL Published 2020-05-04 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2020-05-04
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
7.5 HIGH — AV:N/AC:L/Au:N/C:P/I:P/A:P
Weaknesses
CWE-917

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 configurations

• apache syncope (>= 2.1.0 < 2.1.6)

Related

Weakness · CWE (1)

  • CWE-917 Improper Neutralization of Special Elements used in an Expression Language Statement weakness

References