CVE-2020-9493

Java deserialization in Chainsaw

Description

A deserialization flaw was found in Apache Chainsaw versions prior to 2.1.0 which could lead to malicious code execution.

Remediation

Workaround:

  • Don't configure Chainsaw to read serialized log events. Use a different receiver, such as XMLSocketReceiver

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.21%
Third-Party Advisory openwall.com Third-Party Advisory openwall.com
Affected: Apache Software Foundation Apache Chainsaw
Published at:
Updated at:

References

Link Tags
https://www.openwall.com/lists/oss-security/2021/06/16/1 mailing list tool signature
http://www.openwall.com/lists/oss-security/2021/06/16/1 third party advisory mailing list
https://lists.apache.org/thread.html/r50d389c613ba6062a26aa57e163c09bfee4ff2d95d67331d75265b83%40%3Cannounce.apache.org%3E mailing list
http://www.openwall.com/lists/oss-security/2022/01/18/5 third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2020-9493?
CVE-2020-9493 has been scored as a critical severity vulnerability.
How to fix CVE-2020-9493?
As a workaround for remediating CVE-2020-9493: Don't configure Chainsaw to read serialized log events. Use a different receiver, such as XMLSocketReceiver
Is CVE-2020-9493 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-9493 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-9493?
CVE-2020-9493 affects Apache Software Foundation Apache Chainsaw.
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