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CVE-2020-13942

CRITICALCVSS 9.8/10EPSS 68.40%

Last modified

CVE-2020-13942 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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. EPSS estimates a 68.40% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
68.40%

99.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
ApacheUnomi>= 1.5.0, < 1.5.2

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is 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.
How severe is CVE-2020-13942?
CVE-2020-13942 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 68.40% probability of exploitation in the next 30 days.
How do I fix CVE-2020-13942?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-13942?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST