Bug 1795155 (CVE-2019-19590)

Summary:	CVE-2019-19590 radare2: integer overflow in for the variable new_token_size in the function r_asm_massemble at libr/asm/asm.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
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:	2020-01-27 14:09:32 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:	1795157, 1795158
Bug Blocks:

Description Dhananjay Arunesh 2020-01-27 09:48:45 UTC

A vulnerability was found in radare2 through 4.0, there is an integer overflow for the variable new_token_size in the function r_asm_massemble at libr/asm/asm.c. This integer overflow will result in a Use-After-Free for the buffer tokens, which can be filled with arbitrary malicious data after the free. This allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via crafted input.

Reference:
https://github.com/radareorg/radare2/issues/15543

Comment 1 Dhananjay Arunesh 2020-01-27 09:49:17 UTC

Created radare2 tracking bugs for this issue:

Affects: epel-7 [bug 1795158]
Affects: fedora-all [bug 1795157]

Comment 2 Product Security DevOps Team 2020-01-27 14:09:32 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.