10.0
CRITICAL
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. 19, 2021, 4:17 p.m.

Source :

[email protected]

Remotely Exploitable :

Yes !

Impact Score :

6.0

Exploitability Score :

3.9
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.

Affected Products

The following products are affected by CVE-2021-41269 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Cron-utils_project cron-utils
: Total Affected Vendor : 1 | Products : 1
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

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).

Profile Photo
lafayette96/CVE-Errata-Tool

None

Python

Updated: 5 months, 4 weeks ago
8 stars 3 fork 3 watcher
Born at : Sept. 7, 2022, 2 p.m. This repo has been linked 4 different CVEs too.

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 [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
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
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.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

4.22 }} 1.20%

score

0.92406

percentile

CVSS31 - Vulnerability Scoring System
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