CVE-2020-17531 is a vulnerability in Apache Tapestry
Published on December 8, 2020
Deserialization flaw in EOL Tapestry 4.
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.
Weakness Type
What is a Marshaling, Unmarshaling Vulnerability?
The application deserializes untrusted data without sufficiently verifying that the resulting data will be valid.
CVE-2020-17531 has been classified to as a Marshaling, Unmarshaling vulnerability or weakness.
Products Associated with CVE-2020-17531
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Affected Versions
Apache Software Foundation Apache Tapestry:- Version Apache Tapestry 4, <= 4 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.