Bug 1692778 (CVE-2019-9942)

Summary:	CVE-2019-9942 php-twig: sandbox information disclosure
Product:	[Other] Security Response	Reporter:	Dhananjay Arunesh <darunesh>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	fedora, shawn
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	Twig 1.38.0, Twig 2.7.0	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-10 10:52:02 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:	1692779, 1692780
Bug Blocks:

Description Dhananjay Arunesh 2019-03-26 12:15:14 UTC

A sandbox information disclosure exists in Twig before 1.38.0 and 2.x before 2.7.0 because, under some circumstances, it is possible to call the __toString() method on an object even if not allowed by the security policy in place.

Reference:
https://symfony.com/blog/twig-sandbox-information-disclosure

Upstream commit:
https://github.com/twigphp/Twig/commit/eac5422956e1dcca89a3669a03a3ff32f0502077

Comment 1 Dhananjay Arunesh 2019-03-26 12:17:17 UTC

Created php-twig tracking bugs for this issue:

Affects: epel-all [bug 1692779]

Comment 2 Dhananjay Arunesh 2019-03-26 12:17:39 UTC

Created php-twig tracking bugs for this issue:

Affects: fedora-all [bug 1692780]

Comment 3 Product Security DevOps Team 2019-06-10 10:52:02 UTC

This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.