Bug 1659223 (CVE-2018-16476)

Summary:	CVE-2018-16476 activejob: Information Exposure through deserialization using GlobalId
Product:	[Other] Security Response	Reporter:	Laura Pardo <lpardo>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	bbuckingham, bcourt, bkearney, dajohnso, dmetzger, gblomqui, gmccullo, gtanzill, hhorak, jaruga, jfrey, jhardy, jorton, jprause, kdixon, mmccune, mrike, obarenbo, ohadlevy, pvalena, rchan, rcosta, rjerrido, roliveri, ruby-maint, simaishi
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	activejob 4.2.11, activejob 5.0.7.1, activejob 5.1.6.1, activejob 5.2.1.1	Doc Type:	If docs needed, set a value
Doc Text:	A deserialization flaw, leading to an information exposure flaw, was found in the activejob component used by Red Hat CloudForms and Red Hat Satellite. An attacker can use this flaw to leak memory addresses belonging to the aforementioned applications.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-10 10:43:53 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:	1659224, 1660585, 1660586, 1674049, 1674050, 1674051, 1674052, 1674087, 1674088
Bug Blocks:	1659227

Description Laura Pardo 2018-12-13 20:31:47 UTC

A Broken Access Control vulnerability in Active Job versions >= 4.2.0 allows an attacker to craft user input which can cause Active Job to deserialize it using GlobalId and give them access to information that they should not have. 


References:
https://groups.google.com/d/msg/rubyonrails-security/FL4dSdzr2zw/zjKVhF4qBAAJ 
https://weblog.rubyonrails.org/2018/11/27/Rails-4-2-5-0-5-1-5-2-have-been-released/

Comment 1 Laura Pardo 2018-12-13 20:32:05 UTC

Created rubygem-activejob tracking bugs for this issue:

Affects: fedora-all [bug 1659224]

Comment 2 Scott Gayou 2018-12-18 17:56:11 UTC

RHSCL is vulnerable. Here's an example of what the input looks like before and after serialization & deserialization:

```
(["gid://poc/Person/5"])
```
=>

```
([#<Person:0x0000000001616ce0 @id="5">]).
```

Comment 10 errata-xmlrpc 2019-03-19 07:22:13 UTC

This issue has been addressed in the following products:

  CloudForms Management Engine 5.9

Via RHSA-2019:0600 https://access.redhat.com/errata/RHSA-2019:0600