Bug 1752962 (CVE-2019-14439) - CVE-2019-14439 jackson-databind: Polymorphic typing issue related to logback/JNDI
Summary: CVE-2019-14439 jackson-databind: Polymorphic typing issue related to logback/...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2019-14439
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1752964 1760299 1762564 1762566 1762567 1762568 1762569 1762570 1762571 1762572 1781719
Blocks: 1752963
TreeView+ depends on / blocked
 
Reported: 2019-09-17 16:34 UTC by Pedro Sampaio
Modified: 2021-12-14 18:47 UTC (History)
112 users (show)

Fixed In Version: jackson-databind 2.9.10, jackson-databind 2.8.11.4, jackson-databind 2.7.9.6, jackson-databind 2.6.7.3
Doc Type: If docs needed, set a value
Doc Text:
A flaw was discovered in FasterXML jackson-databind, where it would permit polymorphic deserialization of malicious objects using the ehcache and logback JNDI gadgets when used in conjunction with polymorphic type handling methods such as `enableDefaultTyping()` or when @JsonTypeInfo is using `Id.CLASS` or `Id.MINIMAL_CLASS` or in any other way which ObjectMapper.readValue might instantiate objects from unsafe sources. An attacker could use this flaw to execute arbitrary code.
Clone Of:
Environment:
Last Closed: 2019-10-24 12:51:14 UTC
Embargoed:

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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2019:3200 0 None None None 2019-10-24 09:18:25 UTC
Red Hat Product Errata RHSA-2020:0983 0 None None None 2020-03-26 15:48:48 UTC

Description Pedro Sampaio 2019-09-17 16:34:01 UTC 
A Polymorphic Typing issue was discovered in FasterXML jackson-databind 2.x before 2.9.9.2. This occurs when Default Typing is enabled (either globally or for a specific property) for an externally exposed JSON endpoint and the service has the logback jar in the classpath.

Upstream issue:

https://github.com/FasterXML/jackson-databind/issues/2389

Upstream patch:

https://github.com/FasterXML/jackson-databind/commit/ad418eeb974e357f2797aef64aa0e3ffaaa6125b

References:

https://lists.apache.org/thread.html/940b4c3fef002461b89a050935337056d4a036a65ef68e0bbd4621ef@%3Cdev.struts.apache.org%3E
Comment 1 Pedro Sampaio 2019-09-17 16:37:13 UTC 
Created jackson-databind tracking bugs for this issue:

Affects: fedora-all [bug 1752964]
Comment 5 Cedric Buissart 2019-09-23 10:11:45 UTC 
Statement:

OpenDaylight provided as part of Red Hat OpenStack does not utilize logback when used in a supported configuration. Therefore, the prerequisites for this vulnerability are not present and OpenDaylight is not affected.

Satellite 6 does not enable polymorphic unmarshmalling, which is a required configuration for the vulnerability to be used. We may update the jackson-databind dependency in a future release.
Comment 10 errata-xmlrpc 2019-10-24 09:18:21 UTC 
This issue has been addressed in the following products:

  Red Hat JBoss AMQ

Via RHSA-2019:3200 https://access.redhat.com/errata/RHSA-2019:3200
Comment 11 Product Security DevOps Team 2019-10-24 12:51:14 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2019-14439
Comment 12 Paramvir jindal 2019-11-19 11:01:21 UTC 
Marking RHSSO as not affected because RHSSO 7.3.4 ships :
rhsso-7.3/modules/system/layers/base/.overlays/layer-base-rh-sso-7.3.4.CP/com/fasterxml/jackson/core/jackson-databind/main/jackson-databind-2.9.9.3-redhat-00001.jar

Affected version are FasterXML jackson-databind 2.x before 2.9.9.2
Comment 16 Kunjan Rathod 2019-12-06 01:40:21 UTC 
This vulnerability is out of security support scope for the following products:
 * Red Hat JBoss BPMS 6
 * Red Hat JBoss Data Virtualization & Services 6


Please refer to https://access.redhat.com/support/policy/updates/jboss_notes for more details.
Comment 19 Jonathan Christison 2020-02-28 14:48:10 UTC 
Mitigation:

The following conditions are needed for an exploit, we recommend avoiding all if possible
* Deserialization from sources you do not control
* `enableDefaultTyping()`
* `@JsonTypeInfo using `id.CLASS` or `id.MINIMAL_CLASS`
Comment 20 errata-xmlrpc 2020-03-26 15:48:42 UTC 
This issue has been addressed in the following products:

  Red Hat Fuse 7.6.0

Via RHSA-2020:0983 https://access.redhat.com/errata/RHSA-2020:0983
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