Bug 1735515 (CVE-2019-10355)

Summary: CVE-2019-10355 jenkins-plugin-script-security: Sandbox bypass through type casts in Script Security Plugin
Product: [Other] Security Response Reporter: Sam Fowler <sfowler>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: abenaiss, ahardin, aos-bugs, bleanhar, bmontgom, ccoleman, dedgar, eparis, java-sig-commits, jburrell, jgoulding, jokerman, mchappel, mizdebsk, msrb, nstielau, pbhattac, sponnaga, vbobade
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: jenkins-plugin-script-security 1.62 Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in Jenkins Script Security plugin. Sandbox protection could be circumvented by casting crafted objects to other types allowing an attacker to specify sandboxed scripts to invoke constructors that weren't previously whitelisted. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
 Story Points: ---
Clone Of: Environment:
Last Closed: 2019-09-04 13:07:28 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 1735516, 1735526, 1735527, 1735528    
Bug Blocks: 1735517    

Description Sam Fowler 2019-08-01 03:18:59 UTC 
Sandbox protection in Jenkins Script Security Plugin could be circumvented by casting crafted objects to other types. This allowed attackers able to specify sandboxed scripts to invoke constructors that weren’t whitelisted.

Additionally, this could be used to read arbitrary files on the Jenkins master.

Casting collections to other types as an alternative syntax for constructor invocation is now only allowed when the collection type is defined in java.util, and prohibited otherwise. Casting files and enums to arrays is now intercepted by the sandbox and treated as the invocation of an equivalent method.


External References:

https://jenkins.io/security/advisory/2019-07-31/#SECURITY-1465%20(1)
Comment 1 Sam Fowler 2019-08-01 03:19:22 UTC 
Created jenkins-script-security-plugin tracking bugs for this issue:

Affects: fedora-all [bug 1735516]
Comment 5 Sam Fowler 2019-08-01 04:00:04 UTC 
"Any security advisory related updates to Jenkins core or the plugins we include in the OpenShift Jenkins master image will only occur in the v3.11 and v4.x branches of this repository."

https://github.com/openshift/jenkins/blob/master/README.md#jenkins-security-advisories-the-master-image-from-this-repository-and-the-oc-binary
Comment 6 errata-xmlrpc 2019-09-04 07:15:45 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 3.11

Via RHSA-2019:2651 https://access.redhat.com/errata/RHSA-2019:2651
Comment 7 Product Security DevOps Team 2019-09-04 13:07:28 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-2019-10355
Comment 8 errata-xmlrpc 2019-09-11 05:16:28 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.1

Via RHSA-2019:2662 https://access.redhat.com/errata/RHSA-2019:2662