CVE-2021-41269
Apache Cron-Utils Remote Code Execution due to Template Injection
Description
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.
INFO
Published Date :
Nov. 15, 2021, 9:15 p.m.
Last Modified :
Nov. 21, 2024, 6:25 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | CRITICAL | [email protected] | ||||
| CVSS 3.1 | CRITICAL | [email protected] |
Public PoC/Exploit Available at Github
CVE-2021-41269 has a 1 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-41269.
| URL | Resource |
|---|---|
| https://github.com/jmrozanec/cron-utils/commit/cfd2880f80e62ea74b92fa83474c2aabdb9899da | Patch Third Party Advisory |
| https://github.com/jmrozanec/cron-utils/commit/d6707503ec2f20947f79e38f861dba93b39df9da | Patch Third Party Advisory |
| https://github.com/jmrozanec/cron-utils/issues/461 | Exploit Issue Tracking Third Party Advisory |
| https://github.com/jmrozanec/cron-utils/security/advisories/GHSA-p9m8-27x8-rg87 | Third Party Advisory |
| https://github.com/jmrozanec/cron-utils/commit/cfd2880f80e62ea74b92fa83474c2aabdb9899da | Patch Third Party Advisory |
| https://github.com/jmrozanec/cron-utils/commit/d6707503ec2f20947f79e38f861dba93b39df9da | Patch Third Party Advisory |
| https://github.com/jmrozanec/cron-utils/issues/461 | Exploit Issue Tracking Third Party Advisory |
| https://github.com/jmrozanec/cron-utils/security/advisories/GHSA-p9m8-27x8-rg87 | Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-41269 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-41269
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
Python
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-41269 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-41269 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://github.com/jmrozanec/cron-utils/commit/cfd2880f80e62ea74b92fa83474c2aabdb9899da Added Reference https://github.com/jmrozanec/cron-utils/commit/d6707503ec2f20947f79e38f861dba93b39df9da Added Reference https://github.com/jmrozanec/cron-utils/issues/461 Added Reference https://github.com/jmrozanec/cron-utils/security/advisories/GHSA-p9m8-27x8-rg87 -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Nov. 19, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:P/I:P/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://github.com/jmrozanec/cron-utils/commit/cfd2880f80e62ea74b92fa83474c2aabdb9899da No Types Assigned https://github.com/jmrozanec/cron-utils/commit/cfd2880f80e62ea74b92fa83474c2aabdb9899da Patch, Third Party Advisory Changed Reference Type https://github.com/jmrozanec/cron-utils/commit/d6707503ec2f20947f79e38f861dba93b39df9da No Types Assigned https://github.com/jmrozanec/cron-utils/commit/d6707503ec2f20947f79e38f861dba93b39df9da Patch, Third Party Advisory Changed Reference Type https://github.com/jmrozanec/cron-utils/issues/461 No Types Assigned https://github.com/jmrozanec/cron-utils/issues/461 Exploit, Issue Tracking, Third Party Advisory Changed Reference Type https://github.com/jmrozanec/cron-utils/security/advisories/GHSA-p9m8-27x8-rg87 No Types Assigned https://github.com/jmrozanec/cron-utils/security/advisories/GHSA-p9m8-27x8-rg87 Third Party Advisory Added CPE Configuration OR *cpe:2.3:a:cron-utils_project:cron-utils:*:*:*:*:*:*:*:* versions up to (excluding) 9.1.6
Vulnerability Scoring Details
Base CVSS Score: 10
Base CVSS Score: 6.8
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
4.02 }} 0.60%
score
0.87901
percentile