CVE-2021-20190 - MergeBase Vulnerability Database
Risk Score
8.1
Out of 10
Summary
Published
Jan 19, 2021
Updated
Jun 3, 2022
Source
NVD
Identifier

CVE-2021-20190

Description
A flaw was found in jackson-databind before 2.9.10.7. FasterXML mishandles the interaction between serialization gadgets and typing. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
MergeBase Comment
Jackson-databind version 2.9.10.7 prevents malicious attackers from deserializing data to javax.swing.JTextPane objects. Unfortunately javax.swing.JTextPane is a core Java runtime library, and so it is always present in all Java systems. See jackson-databind commit 7dbf51bf78d157098 for more information.
 

Jackson-databind probably has more CVEs than any other open source Java library on the planet. But that is a bit misleading, because the CVE's tend to be associated with blacklist "gadget" entries added to jackson-databind's list of Java objects it will refuse to deserialize against. A good blog post at cowtowncoder.medium.com explains this in more detail.

Common Weakness Enumeration (CWE)

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