CVE-2020-13942

Public Exploit
Remote Code Execution in Apache Unomi

Description

It is possible to inject malicious OGNL or MVEL scripts into the /context.json public endpoint. This was partially fixed in 1.5.1 but a new attack vector was found. In Apache Unomi version 1.5.2 scripts are now completely filtered from the input. It is highly recommended to upgrade to the latest available version of the 1.5.x release to fix this problem.

Categories

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 94.05% Top 5%
Vendor Advisory org.
Affected: Apache Software Foundation Apache Unomi
Published at:
Updated at:

References

Link Tags
http://unomi.apache.org./security/cve-2020-13942.txt vendor advisory mailing list
https://lists.apache.org/thread.html/rcb6d2eafcf15def433aaddfa06738e5faa5060cef2647769e178999a%40%3Cdev.unomi.apache.org%3E mailing list
https://lists.apache.org/thread.html/rcb6d2eafcf15def433aaddfa06738e5faa5060cef2647769e178999a%40%3Cusers.unomi.apache.org%3E mailing list
https://lists.apache.org/thread.html/r4a8fa91836687eaca42b5420a778ca8c8fd3a3740e4cf4401acc9118%40%3Cusers.unomi.apache.org%3E mailing list
https://lists.apache.org/thread.html/r4a8fa91836687eaca42b5420a778ca8c8fd3a3740e4cf4401acc9118%40%3Cdev.unomi.apache.org%3E mailing list
http://www.openwall.com/lists/oss-security/2020/11/24/5 third party advisory mailing list
https://lists.apache.org/thread.html/r08a4057ff7196b8880117edaa4b6207cbd36ed692d8dd1f5a56b4d0f%40%3Cannounce.apache.org%3E mailing list
https://advisory.checkmarx.net/advisory/CX-2020-4284 third party advisory exploit
https://lists.apache.org/thread.html/r79672c25e0ef9bb4b9148376281200a8e61c6d5ef5bb705e9a363460%40%3Ccommits.unomi.apache.org%3E mailing list

Frequently Asked Questions

What is the severity of CVE-2020-13942?
CVE-2020-13942 has been scored as a critical severity vulnerability.
How to fix CVE-2020-13942?
To fix CVE-2020-13942, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-13942 being actively exploited in the wild?
It is possible that CVE-2020-13942 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~94% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-13942?
CVE-2020-13942 affects Apache Software Foundation Apache Unomi.
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