CVE-2019-12086
HIGHCVSS 7.5/10EPSS 21.95%
Last modified
CVE-2019-12086 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 21.95% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Fasterxml | Jackson-Databind | >= 2.0.0, < 2.6.7.3 |
| Fasterxml | Jackson-Databind | >= 2.7.0, < 2.7.9.6 |
| Fasterxml | Jackson-Databind | >= 2.8.0, < 2.8.11.4 |
| Fasterxml | Jackson-Databind | >= 2.9.0, < 2.9.9 |
| Debian | Debian Linux | 8.0 |
| Debian | Debian Linux | 9.0 |
References
- http://russiansecurity.expert/2016/04/20/mysql-connect-file-read/Exploit, Third Party Advisory
- http://www.securityfocus.com/bid/109227Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2019:2858Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:2935Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:2936Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:2937Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:2938Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:2998Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3044Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3045Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3046Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3050Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3149Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3200Third Party Advisory
- https://github.com/FasterXML/jackson-databind/issues/2326Patch, Third Party Advisory
- https://github.com/FasterXML/jackson/wiki/Jackson-Release-2.9.9Release Notes, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/05/msg00030.htmlThird Party Advisory
- https://seclists.org/bugtraq/2019/May/68Mailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20190530-0003/Third Party Advisory
- https://www.debian.org/security/2019/dsa-4452Third Party Advisory
- https://www.oracle.com/security-alerts/cpuApr2021.htmlThird Party Advisory
- https://www.oracle.com/security-alerts/cpuapr2020.htmlThird Party Advisory
- https://www.oracle.com/security-alerts/cpuapr2022.htmlThird Party Advisory
- https://www.oracle.com/security-alerts/cpujan2020.htmlThird Party Advisory
- https://www.oracle.com/security-alerts/cpujul2020.htmlThird Party Advisory
- https://www.oracle.com/security-alerts/cpuoct2020.htmlThird Party Advisory
- https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.htmlPatch, Third Party Advisory
- https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.htmlPatch, Third Party Advisory
- http://russiansecurity.expert/2016/04/20/mysql-connect-file-read/Exploit, Third Party Advisory
- http://www.securityfocus.com/bid/109227Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2019:2858Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:2935Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:2936Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:2937Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:2938Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:2998Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3044Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3045Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3046Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3050Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3149Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3200Third Party Advisory
- https://github.com/FasterXML/jackson-databind/issues/2326Patch, Third Party Advisory
- https://github.com/FasterXML/jackson/wiki/Jackson-Release-2.9.9Release Notes, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/05/msg00030.htmlThird Party Advisory
- https://seclists.org/bugtraq/2019/May/68Mailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20190530-0003/Third Party Advisory
- https://www.debian.org/security/2019/dsa-4452Third Party Advisory
- https://www.oracle.com/security-alerts/cpuApr2021.htmlThird Party Advisory
- https://www.oracle.com/security-alerts/cpuapr2020.htmlThird Party Advisory
- https://www.oracle.com/security-alerts/cpuapr2022.htmlThird Party Advisory
- https://www.oracle.com/security-alerts/cpujan2020.htmlThird Party Advisory
- https://www.oracle.com/security-alerts/cpujul2020.htmlThird Party Advisory
- https://www.oracle.com/security-alerts/cpuoct2020.htmlThird Party Advisory
- https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.htmlPatch, Third Party Advisory
- https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.htmlPatch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2019-12086?
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.
How severe is CVE-2019-12086?
CVE-2019-12086 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 21.95% probability of exploitation in the next 30 days.
How do I fix CVE-2019-12086?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
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