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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
7.5/10

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

EPSS Probability
21.95%

97.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
FasterxmlJackson-Databind>= 2.0.0, < 2.6.7.3
FasterxmlJackson-Databind>= 2.7.0, < 2.7.9.6
FasterxmlJackson-Databind>= 2.8.0, < 2.8.11.4
FasterxmlJackson-Databind>= 2.9.0, < 2.9.9
DebianDebian Linux8.0
DebianDebian Linux9.0

References

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.

Are you affected by CVE-2019-12086?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST