Improper input validation in Apache Unomi
CVE-2020-13942
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.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.683 (99.3th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 99th percentile — 99.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.684 · newest: 0.683 · change: -0.001
Affected products
- Apache Unomi
- Apache Software Foundation Unomi — versions unspecified
Weakness classification (CWE)
Public proof-of-concept exploits
References
- unomi.apache.org./security/cve-2020-13942.txt (Mailing List, Vendor Advisory)
- lists.apache.org/thread.html/rcb6d2eafcf15def433aaddfa06738e5faa5060cef2647769e… (mailing-list)
- lists.apache.org/thread.html/rcb6d2eafcf15def433aaddfa06738e5faa5060cef2647769e… (mailing-list)
- lists.apache.org/thread.html/r4a8fa91836687eaca42b5420a778ca8c8fd3a3740e4cf4401… (mailing-list)
- lists.apache.org/thread.html/r4a8fa91836687eaca42b5420a778ca8c8fd3a3740e4cf4401… (mailing-list)
- www.openwall.com/lists/oss-security/2020/11/24/5 (mailing-list, Mailing List, Third Party Advisory)
- lists.apache.org/thread.html/r08a4057ff7196b8880117edaa4b6207cbd36ed692d8dd1f5a… (mailing-list)
- advisory.checkmarx.net/advisory/CX-2020-4284 (Exploit, Third Party Advisory)
- lists.apache.org/thread.html/r79672c25e0ef9bb4b9148376281200a8e61c6d5ef5bb705e9… (mailing-list)
Frequently asked questions
- What is CVE-2020-13942?
- CVE-2020-13942 is a critical-severity vulnerability in Apache Unomi, classified under Improper Input Validation. CVSS score: 9.8/10. Published 2020-11-24.
- How severe is CVE-2020-13942?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2020-13942 known to be exploited?
- 51 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.