Vulnerability CVE-2019-16942
Published: 2019-10-01

Description:
A Polymorphic Typing issue was discovered in FasterXML jackson-databind 2.0.0 through 2.9.10. When Default Typing is enabled (either globally or for a specific property) for an externally exposed JSON endpoint and the service has the commons-dbcp (1.4) jar in the classpath, and an attacker can find an RMI service endpoint to access, it is possible to make the service execute a malicious payload. This issue exists because of org.apache.commons.dbcp.datasources.SharedPoolDataSource and org.apache.commons.dbcp.datasources.PerUserPoolDataSource mishandling.

Type:

CWE-20

 (Improper Input Validation)

CVSS2 => (AV:N/AC:L/Au:N/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.5/10
6.4/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
Fasterxml -> Jackson-databind 
Debian -> Debian linux 

 References:
https://github.com/FasterXML/jackson-databind/issues/2478
https://issues.apache.org/jira/browse/GEODE-7255
https://lists.apache.org/thread.html/7782a937c9259a58337ee36b2961f00e2d744feafc13084e176d0df5@%3Cissues.geode.apache.org%3E
https://lists.apache.org/thread.html/b2e23c94f9dfef53e04c492e5d02e5c75201734be7adc73a49ef2370@%3Cissues.geode.apache.org%3E
https://lists.debian.org/debian-lts-announce/2019/10/msg00001.html
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TH5VFUN4P7CCIP7KSEXYA5MUTFCUDUJT/
https://medium.com/@cowtowncoder/on-jackson-cves-dont-panic-here-is-what-you-need-to-know-54cd0d6e8062
https://seclists.org/bugtraq/2019/Oct/6
https://www.debian.org/security/2019/dsa-4542
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