CVE-2020-35490

2020-12-1819:09:06

redhat.com

access.redhat.com

8.1 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

6.8 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

0.003 Low

EPSS

Percentile

65.5%

JSON

A flaw was found in jackson-databind. 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.

Mitigation

The following conditions are needed for an exploit, we recommend avoiding all if possible:

Deserialization from sources you do not control
enableDefaultTyping()
@JsonTypeInfo using id.CLASSorid.MINIMAL_CLASS`
avoid org.apache.commons.dbcp2.datasources.PerUserPoolDataSource and org.apache.commons.dbcp2.datasources.SharedPoolDataSource in the classpath