Bug 1937787 (CVE-2021-20285)

Summary:	CVE-2021-20285 upx: Illegal memory access in canPack function in p_lx_elf.cpp
Product:	[Other] Security Response	Reporter:	Pedro Sampaio <psampaio>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	gwync
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in upx canPack in p_lx_elf.cpp in UPX 3.96. This flaw allows attackers to cause a denial of service (SEGV or buffer overflow and application crash) or possibly have unspecified other impacts via a crafted ELF. The highest threat from this vulnerability is to system availability.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-03-11 17:25:50 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:	1937789, 1937791
Bug Blocks:	1937806

Description Pedro Sampaio 2021-03-11 14:52:39 UTC

A flaw was found in upx canPack in p_lx_elf.cpp in UPX 3.96 that allows attackers to cause a denial of service (SEGV or buffer overflow, and application crash) or possibly have unspecified other impacts via a crafted ELF.

Upstream issue:

https://github.com/upx/upx/issues/421

Comment 1 Pedro Sampaio 2021-03-11 14:53:09 UTC

Created upx tracking bugs for this issue:

Affects: epel-all [bug 1937789]
Affects: fedora-all [bug 1937791]

Comment 2 Product Security DevOps Team 2021-03-11 17:25:50 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.