Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Cron-Utils Project | Cron-Utils | < 9.1.3 |
Related Weaknesses (CWE)
References
- https://github.com/jmrozanec/cron-utils/commit/4cf373f7352f5d95f0bf6512af8af326bPatchThird Party Advisory
- https://github.com/jmrozanec/cron-utils/issues/461ExploitIssue TrackingThird Party Advisory
- https://github.com/jmrozanec/cron-utils/security/advisories/GHSA-pfj3-56hm-jwq5ExploitThird Party Advisory
- https://lists.apache.org/thread.html/r390bb7630b7ea8f02bf7adbbe69c0ae8b562c527d6
- https://lists.apache.org/thread.html/r432a69a1a85cbcb1f1bad2aa0fbfce0367bf894bf9
- https://lists.apache.org/thread.html/r50e1b5544c37e408ed7e9a958b28237b1cb9660ba2
- https://lists.apache.org/thread.html/r5f601d15292e3302ad0ae0e89527029546945b1cd5
- https://lists.apache.org/thread.html/r71083c759dc627f198571b3d48b6745fe798b1d53c
- https://lists.apache.org/thread.html/r737406bc17d49ffe8fe6a8828d390ee0a02e45e5a5
- https://lists.apache.org/thread.html/r855aead591697dc2e85faf66c99036e49f49243194
- https://lists.apache.org/thread.html/r96937fc9c82f3201b59311c067e97bce71123944f9
- https://lists.apache.org/thread.html/r9ae9a9fb1c8e2bf95c676e7e4cd06aa04f0a3a8a9e
- https://lists.apache.org/thread.html/ra9e81244d323898dde3c979dd7df6996e4037d14a0
- https://github.com/jmrozanec/cron-utils/commit/4cf373f7352f5d95f0bf6512af8af326bPatchThird Party Advisory
- https://github.com/jmrozanec/cron-utils/issues/461ExploitIssue TrackingThird Party Advisory
FAQ
What is CVE-2020-26238?
CVE-2020-26238 is a vulnerability with a CVSS score of 7.9 (HIGH). 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. T...
How severe is CVE-2020-26238?
CVE-2020-26238 has been rated HIGH with a CVSS base score of 7.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-26238?
Check the references section above for vendor advisories and patch information. Affected products include: Cron-Utils Project Cron-Utils.