cve/2020/CVE-2020-26238.md

CVE-2020-26238

Description

Cron-utils is a Java library to parse, validate, migrate crons as well as get human readable descriptions for them. In cron-utils before version 9.1.3, a template Injection vulnerability is present. This enables attackers to inject arbitrary Java EL expressions, leading to unauthenticated Remote Code Execution (RCE) vulnerability. Only projects using the @Cron annotation to validate untrusted Cron expressions are affected. This issue was patched in version 9.1.3.

POC

Reference

• https://github.com/jmrozanec/cron-utils/issues/461
• https://github.com/jmrozanec/cron-utils/issues/461

Github

• https://github.com/ARPSyndicate/cvemon
• https://github.com/EdgeSecurityTeam/Vulnerability
• https://github.com/SexyBeast233/SecBooks
• https://github.com/tzwlhack/Vulnerability