CVE-2020-17531
high-risk
Published 2020-12-08
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.
Do I need to act?
!
36.5% chance of exploitation in next 30 days
EPSS score — higher than 64% of all CVEs
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10
Critical
NETWORK
/ LOW complexity
Affected Products (1)
Affected Vendors
References (8)
Third Party Advisory
https://security.netapp.com/advisory/ntap-20210115-0007/
Third Party Advisory
https://security.netapp.com/advisory/ntap-20210115-0007/
53
/ 100
high-risk
Severity
32/34 · Critical
Exploitability
16/34 · Moderate
Exposure
5/34 · Minimal