Deserialization in Fasterxml Jackson-Databind
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.
Vulnerability class: Insecure Deserialization
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.219 (97.6th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 97.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.219 · newest: 0.219 · change: 0.000
Affected products
- Fasterxml Jackson-Databind
- Debian Linux — versions 8.0, 9.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- lists.apache.org/thread.html/88cd25375805950ae7337e669b0cb0eeda98b9604c1b8d806d… (mailing-list)
- lists.debian.org/debian-lts-announce/2019/05/msg00030.html (mailing-list, Third Party Advisory)
- www.debian.org/security/2019/dsa-4452 (vendor-advisory, Third Party Advisory)
- seclists.org/bugtraq/2019/May/68 (mailing-list, Mailing List, Third Party Advisory)
- www.securityfocus.com/bid/109227 (VDB Entry, Third Party Advisory, vdb-entry)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.apache.org/thread.html/3f99ae8dcdbd69438cb733d745ee3ad5e852068490719a6650… (mailing-list)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- access.redhat.com/errata/RHSA-2019:2858 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-12086?
- CVE-2019-12086 is a high-severity vulnerability in Fasterxml Jackson-Databind, classified under Deserialization of Untrusted Data. CVSS score: 7.5/10. Published 2019-05-17.
- How severe is CVE-2019-12086?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2019-12086 known to be exploited?
- 22 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.