Vulnerability CVE-2019-12086
Published: 2019-05-17

Description:
A Polymorphic Typing issue was discovered in FasterXML jackson-databind 2.x before 2.9.9. When Default Typing is enabled (either globally or for a specific property) for an externally exposed JSON endpoint, the service has the mysql-connector-java jar (8.0.14 or earlier) in the classpath, and an attacker can host a crafted MySQL server reachable by the victim, an attacker can send a crafted JSON message that allows them to read arbitrary local files on the server. This occurs because of missing com.mysql.cj.jdbc.admin.MiniAdmin validation.

Type:

CWE-200

 (Information Exposure)

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

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
None
None
Affected software
Fasterxml -> Jackson-databind 
Debian -> Debian linux 

 References:
http://russiansecurity.expert/2016/04/20/mysql-connect-file-read/
http://www.securityfocus.com/bid/109227
https://github.com/FasterXML/jackson/wiki/Jackson-Release-2.9.9
https://github.com/FasterXML/jackson-databind/issues/2326
https://lists.apache.org/thread.html/3f99ae8dcdbd69438cb733d745ee3ad5e852068490719a66509b4592@%3Ccommits.cassandra.apache.org%3E
https://lists.apache.org/thread.html/88cd25375805950ae7337e669b0cb0eeda98b9604c1b8d806dccbad2@%3Creviews.spark.apache.org%3E
https://lists.debian.org/debian-lts-announce/2019/05/msg00030.html
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OVRZDN2T6AZ6DJCZJ3VSIQIVHBVMVWBL/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TXRVXNRFHJSQWFHPRJQRI5UPMZ63B544/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UKUALE2TUCKEKOHE2D342PQXN4MWCSLC/
https://medium.com/@cowtowncoder/on-jackson-cves-dont-panic-here-is-what-you-need-to-know-54cd0d6e8062
https://seclists.org/bugtraq/2019/May/68
https://security.netapp.com/advisory/ntap-20190530-0003/
https://www.debian.org/security/2019/dsa-4452
https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html
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