CVE-2019-12086
Published: 17 May 2019
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.
From the Ubuntu Security Team
It was discovered that Jackson Databind incorrectly handled deserialization. An attacker could possibly use this issue to obtain sensitive information.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
jackson-databind Launchpad, Ubuntu, Debian |
bionic |
Needed
|
| cosmic |
Ignored
(end of life)
|
|
| disco |
Ignored
(end of life)
|
|
| eoan |
Released
(2.9.8-2)
|
|
| focal |
Released
(2.9.8-2)
|
|
| groovy |
Released
(2.9.8-2)
|
|
| hirsute |
Released
(2.9.8-2)
|
|
| impish |
Released
(2.9.8-2)
|
|
| jammy |
Released
(2.9.8-2)
|
|
| kinetic |
Released
(2.9.8-2)
|
|
| lunar |
Released
(2.9.8-2)
|
|
| mantic |
Released
(2.9.8-2)
|
|
| trusty |
Needs triage
|
|
| upstream |
Needs triage
|
|
| xenial |
Released
(2.4.2-3ubuntu0.1~esm2)
Available with Ubuntu Pro |
|
|
jackson-jr Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
|
| cosmic |
Not vulnerable
|
|
| disco |
Not vulnerable
|
|
| eoan |
Not vulnerable
|
|
| focal |
Not vulnerable
|
|
| groovy |
Not vulnerable
|
|
| hirsute |
Not vulnerable
|
|
| impish |
Not vulnerable
|
|
| jammy |
Not vulnerable
|
|
| kinetic |
Not vulnerable
|
|
| lunar |
Not vulnerable
|
|
| mantic |
Not vulnerable
|
|
| trusty |
Does not exist
|
|
| upstream |
Needs triage
|
|
| xenial |
Does not exist
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.5 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | None |
| Availability impact | None |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
References
- http://russiansecurity.expert/2016/04/20/mysql-connect-file-read/
- https://github.com/FasterXML/jackson-databind/issues/2326
- https://github.com/FasterXML/jackson/wiki/Jackson-Release-2.9.9
- https://medium.com/@cowtowncoder/on-jackson-cves-dont-panic-here-is-what-you-need-to-know-54cd0d6e8062
- https://ubuntu.com/security/notices/USN-4813-1
- https://www.cve.org/CVERecord?id=CVE-2019-12086
- NVD
- Launchpad
- Debian