CVE-2021-31819

Description

In Halibut versions prior to 4.4.7 there is a deserialisation vulnerability that could allow remote code execution on systems that already trust each other based on certificate verification.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 1.38% Top 25%
Affected: Octopus Deploy Halibut
Published at:
Updated at:

References

Link Tags
https://advisories.octopus.com/adv/2021-08---Remote-Code-Execution-via-Deserialisation-in-the-Halibut-Protocol-%28CVE-2021-31819%29.2250309681.html

Frequently Asked Questions

What is the severity of CVE-2021-31819?
CVE-2021-31819 has been scored as a critical severity vulnerability.
How to fix CVE-2021-31819?
To fix CVE-2021-31819, 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-2021-31819 being actively exploited in the wild?
It is possible that CVE-2021-31819 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-31819?
CVE-2021-31819 affects Octopus Deploy Halibut.
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