SB2021111515 - Template injection in cron-utils
Published: November 15, 2021 Updated: October 6, 2022
Security Bulletin ID
SB2021111515
Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Template injection (CVE-ID: CVE-2021-41269)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to improper input validation when validating untrusted Cron expressions in @Cron annotation. A remote attacker can send a specially crafted request to the application and execute arbitrary Java code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install update from vendor's website.
References
- https://github.com/jmrozanec/cron-utils/issues/461
- https://github.com/jmrozanec/cron-utils/commit/d6707503ec2f20947f79e38f861dba93b39df9da
- https://github.com/jmrozanec/cron-utils/security/advisories/GHSA-p9m8-27x8-rg87
- https://github.com/jmrozanec/cron-utils/commit/cfd2880f80e62ea74b92fa83474c2aabdb9899da