Bug 1664712 (CVE-2018-20671)

Summary:	CVE-2018-20671 binutils: Integer overflow in load_specific_debug_section function
Product:	[Other] Security Response	Reporter:	Andrej Nemec <anemec>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	abhgupta, darunesh, dbaker, fweimer, jokerman, kanderso, mcermak, mnewsome, mpolacek, nickc, ohudlick, sipoyare, sthangav, trankin, virt-maint
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:	2021-10-27 03:21:32 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:	1664713, 1664714, 1664715, 1666219, 1666220
Bug Blocks:	1664716

Description Andrej Nemec 2019-01-09 13:46:27 UTC

An integer overflow was found in load_specific_debug_section function.

Upstream issue:

https://sourceware.org/bugzilla/show_bug.cgi?id=24005

Upstream patch:

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=11fa9f134fd658075c6f74499c780df045d9e9ca

Comment 1 Andrej Nemec 2019-01-09 13:48:21 UTC

Created binutils tracking bugs for this issue:

Affects: fedora-all [bug 1664713]


Created mingw-binutils tracking bugs for this issue:

Affects: epel-all [bug 1664715]
Affects: fedora-all [bug 1664714]

Comment 2 Riccardo Schirone 2019-01-15 08:58:31 UTC

When binutils is compiled in 32bit mode, an integer overflow is possible in load_specific_debug_section function() in objdump.c which may lead to an heap-based buffer overflow in bfd_get_full_section_contents().

Comment 6 Riccardo Schirone 2019-01-23 08:54:19 UTC

Statement:

This issue did not affect the versions of binutils as shipped with Red Hat Enterprise Linux 5, 6, and 7 as they did not include the vulnerable code. Moreover the flaw can only be triggered on 32bit versions of the component.