Unauthenticated remote code injection in cron-utils
48Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 10epss 4.3%
from disclosure to weapon1374 days
Published on NVDNov 15
1st PoC+1374d
exploitation probability
4.3%top 9% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
cron-utils is a Java library to define, parse, validate, migrate crons as well as get human readable descriptions for them. In affected versions A template Injection was identified in cron-utils enabling attackers to inject arbitrary Java EL expressions, leading to unauthenticated Remote Code Execution (RCE) vulnerability. Versions up to 9.1.2 are susceptible to this vulnerability. Please note, that only projects using the @Cron annotation to validate untrusted Cron expressions are affected. The issue was patched and a new version was released. Please upgrade to version 9.1.6. There are no known workarounds known.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Affected products
jmrozanec · cron-utilspublic PoCs found — 1
githubgithub.com/shoucheng3/jmrozanec__cron-utils_CVE-2021-41269_9-1-5★ 0⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
References
https://github.com/jmrozanec/cron-utils/commit/cfd2880f80e62ea74b92fa83474c2aabdb9899dahttps://github.com/jmrozanec/cron-utils/commit/d6707503ec2f20947f79e38f861dba93b39df9dahttps://github.com/jmrozanec/cron-utils/issues/461https://github.com/jmrozanec/cron-utils/security/advisories/GHSA-p9m8-27x8-rg87