Bug 2221280 (CVE-2021-32494)

Summary:	CVE-2021-32494 radare2: division by zero vulnerability in Mach-O parser's rebase_buffer function
Product:	[Other] Security Response	Reporter:	Pedro Sampaio <psampaio>
Component:	vulnerability	Assignee:	Nobody <nobody>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	rebus
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:	2023-07-07 22:17:34 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:	2221281, 2221282
Bug Blocks:

Description Pedro Sampaio 2023-07-07 18:09:45 UTC

Radare2 has a division by zero vulnerability in Mach-O parser's rebase_buffer function. This allow attackers to create malicious inputs that can cause denial of service.

References:

https://github.com/radareorg/radare2/issues/18667
https://github.com/radareorg/radare2/commit/a07dedb804a82bc01c07072861942dd80c6b6d62

Comment 1 Pedro Sampaio 2023-07-07 18:09:59 UTC

Created radare2 tracking bugs for this issue:

Affects: epel-all [bug 2221282]
Affects: fedora-all [bug 2221281]

Comment 2 Product Security DevOps Team 2023-07-07 22:17:33 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.

Comment 3 Michal Ambroz 2023-10-26 11:12:12 UTC

https://github.com/radareorg/radare2/commit/a07dedb804a82bc01c07072861942dd80c6b6d62
fixed since release 5.3.0