CVE-2021-21677

Description

Jenkins Code Coverage API Plugin 1.4.0 and earlier does not apply Jenkins JEP-200 deserialization protection to Java objects it deserializes from disk, resulting in a remote code execution vulnerability.

Category

8.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 2.19% Top 20%
Vendor Advisory jenkins.io
Affected: Jenkins project Jenkins Code Coverage API Plugin
Published at:
Updated at:

References

Link Tags
https://www.jenkins.io/security/advisory/2021-08-31/#SECURITY-2376 vendor advisory
http://www.openwall.com/lists/oss-security/2021/08/31/1 third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2021-21677?
CVE-2021-21677 has been scored as a high severity vulnerability.
How to fix CVE-2021-21677?
To fix CVE-2021-21677, 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-2021-21677 being actively exploited in the wild?
It is possible that CVE-2021-21677 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-21677?
CVE-2021-21677 affects Jenkins project Jenkins Code Coverage API Plugin.
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