description: Manipulating classpath asset file URLs, an attacker could guess the path to a known file in the classpath and have it downloaded. If the attacker found the file with the value of the tapestry.hmac-passphrase configuration symbol, most probably the webapp's AppModule class, the value of this symbol could be used to craft a Java deserialization attack, thus running malicious injected Java code. The vector would be the t:formdata parameter from the Form component.
problem types: Information Disclosure
affected:
{
product: Apache Tapestry
vendor: n/a
versions:
status: affected, version: Apache Tapestry 5.4.0 to 5.4.3
}