Bug 1722730 (CVE-2019-12802)

Summary:	CVE-2019-12802 radare2: denial of service in function rcc_context in /libr/egg/egg_lang.c
Product:	[Other] Security Response	Reporter:	Dhananjay Arunesh <darunesh>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	rschirone91, rschiron
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-07-12 13:07:59 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:	1722733, 1722736
Bug Blocks:

Description Dhananjay Arunesh 2019-06-21 06:43:24 UTC

In radare2 through 3.5.1, the rcc_context function of libr/egg/egg_lang.c mishandles changing context. This allows remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact (invalid memory access in r_egg_lang_parsechar; invalid free in rcc_pusharg).

Reference:
https://github.com/radare/radare2/issues/14296

Comment 1 Dhananjay Arunesh 2019-06-21 06:46:05 UTC

Created radare2 tracking bugs for this issue:

Affects: fedora-all [bug 1722733]

Comment 2 Dhananjay Arunesh 2019-06-21 06:54:26 UTC

Created radare2 tracking bugs for this issue:

Affects: epel-7 [bug 1722736]

Comment 3 Riccardo Schirone 2019-06-21 07:43:41 UTC

Upstream patch:
https://github.com/radare/radare2/commit/93af319e0af787ede96537d46210369f5c24240c

Comment 4 Product Security DevOps Team 2019-07-12 13:07:59 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.