CVE-2021-41269: Unauthenticated remote code injection in cron-utils
First published: Mon Nov 15 2021(Updated: )
A flaw was found in cron-utils. This flaw allows an attacker to perform unauthenticated Remote Code Execution (RCE) via Java Expression Language (EL) injection.
Credit: security-advisories@github.com security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cron-utils Project Cron-utils | <9.1.6 | |
| redhat/cron-utils | <9.1.6 | 9.1.6 |
| IBM Data Virtualization on Cloud Pak for Data | <=3.0 | |
| IBM Watson Query with Cloud Pak for Data as a Service | <=2.2 | |
| IBM Watson Query with Cloud Pak for Data as a Service | <=2.1 | |
| IBM Watson Query with Cloud Pak for Data as a Service | <=2.0 | |
| IBM Data Virtualization on Cloud Pak for Data | <=1.8 | |
| IBM Data Virtualization on Cloud Pak for Data | <=1.7 |
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Reference Links
- https://www.cve.org/CVERecord?id=CVE-2021-41269 https://nvd.nist.gov/vuln/detail/CVE-2021-41269
- https://bugzilla.redhat.com/show_bug.cgi?id=2024632
- https://access.redhat.com/errata/RHSA-2022:1013
- https://access.redhat.com/errata/RHSA-2022:6835
- https://access.redhat.com/errata/RHSA-2022:0589
- https://access.redhat.com/security/cve/cve-2021-41269
- https://github.com/jmrozanec/cron-utils/commit/cfd2880f80e62ea74b92fa83474c2aabdb9899da
- https://github.com/jmrozanec/cron-utils/commit/d6707503ec2f20947f79e38f861dba93b39df9da
- https://github.com/jmrozanec/cron-utils/issues/461
- https://github.com/jmrozanec/cron-utils/security/advisories/GHSA-p9m8-27x8-rg87
- https://www.ibm.com/support/pages/node/7183851 (Advisory)
Parent vulnerabilities
(Appears in the following advisories)
Frequently Asked Questions
What is CVE-2021-41269?
CVE-2021-41269 is a vulnerability in the cron-utils Java library that allows an attacker to perform unauthenticated Remote Code Execution (RCE) by injecting arbitrary Java EL expressions.
What is cron-utils?
cron-utils is a Java library used for defining, parsing, validating, and migrating crons, as well as providing human-readable descriptions for them.
How severe is CVE-2021-41269?
CVE-2021-41269 has a severity rating of critical with a value of 9 on a scale of 1 to 10.
How can an attacker exploit CVE-2021-41269?
An attacker can exploit CVE-2021-41269 by injecting arbitrary Java EL expressions, which can lead to unauthenticated Remote Code Execution.
How can I fix CVE-2021-41269?
To fix CVE-2021-41269, update the cron-utils library to version 9.1.6, which includes the necessary remediation.
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