CVE-2020-17531

Deserialization flaw in EOL Tapestry 4.

Description

A Java Serialization vulnerability was found in Apache Tapestry 4. Apache Tapestry 4 will attempt to deserialize the "sp" parameter even before invoking the page's validate method, leading to deserialization without authentication. Apache Tapestry 4 reached end of life in 2008 and no update to address this issue will be released. Apache Tapestry 5 versions are not vulnerable to this issue. Users of Apache Tapestry 4 should upgrade to the latest Apache Tapestry 5 version.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 17.51% Top 10%
Vendor Advisory apache.org
Affected: Apache Software Foundation Apache Tapestry
Published at:
Updated at:

References

Link Tags
https://lists.apache.org/thread.html/r700a6aa234dbff0555d4187bdc8274d7e4c0afbf35b9a3457f09ee76%40%3Cusers.tapestry.apache.org%3E mailing list vendor advisory
https://security.netapp.com/advisory/ntap-20210115-0007/ third party advisory
http://www.openwall.com/lists/oss-security/2022/12/02/1 third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2020-17531?
CVE-2020-17531 has been scored as a critical severity vulnerability.
How to fix CVE-2020-17531?
To fix CVE-2020-17531, 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-2020-17531 being actively exploited in the wild?
It is possible that CVE-2020-17531 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~18% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-17531?
CVE-2020-17531 affects Apache Software Foundation Apache Tapestry.
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