Bug 2026740 (CVE-2021-4021)

Summary:	CVE-2021-4021 radare2: uncontrolled resource consumption via specially crafted ELF64 binary for MIPS architecture
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	henrik, rebus
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	radare2 5.6.2, radare2 5.6.0, radare2 5.5.4 and radare2 5.5.2	Doc Type:	If docs needed, set a value
Doc Text:	A vulnerability was found in Radare2 5.5.0 and in previous versions. Mapping a huge section filled with zeros of an ELF64 binary for MIPS architecture can lead to uncontrolled resource consumption and DoS.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-11-30 13:10:03 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:	2027695, 2027696
Bug Blocks:	2026741

Description Guilherme de Almeida Suckevicz 2021-11-25 17:03:52 UTC

A vulnerability was found in Radare2 5.5.0 and in previous versions. Mapping a huge section filled with zeros of an ELF64 binary for MIPS architecture can lead to uncontrolled resource consumption and DoS.

Reference:
https://github.com/radareorg/radare2/issues/19436

Comment 1 Guilherme de Almeida Suckevicz 2021-11-30 13:07:06 UTC

Created radare2 tracking bugs for this issue:

Affects: epel-all [bug 2027696]
Affects: fedora-all [bug 2027695]

Comment 2 Product Security DevOps Team 2021-11-30 13:10:01 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.