Bug 2122674

Summary:	binutils: Infinite loop in display_debug_abbrev() function in binutils/dwarf.c
Product:	[Other] Security Response	Reporter:	Pedro Sampaio <psampaio>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	adudiak, ailan, aoliva, bdettelb, caswilli, dffrench, dhalasz, dvlasenk, elima, erik-fedora, fjansen, fweimer, gzaronik, jakub, jburrell, jkoehler, jwong, kaycoth, klember, kshier, ktietz, manisandro, marcandre.lureau, mcermak, micjohns, mnewsome, mpolacek, mprchlik, ngough, nickc, ohudlick, rgodfrey, rjones, sipoyare, sthirugn, virt-maint, vkrizan, vmugicag, yahmad
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:	2022-09-06 17:57:20 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:	2122675, 2122676
Bug Blocks:	2122677

Description Pedro Sampaio 2022-08-30 14:54:42 UTC

An infinite loop may be triggered in display_debug_abbrev() function in binutils/dwarf.c while opening a crafted ELF, which may lead to denial of service by a local attacker.

Upstream bug:

https://sourceware.org/bugzilla/show_bug.cgi?id=29370

Comment 1 Pedro Sampaio 2022-08-30 14:55:41 UTC

Created binutils tracking bugs for this issue:

Affects: fedora-all [bug 2122675]


Created mingw-binutils tracking bugs for this issue:

Affects: fedora-all [bug 2122676]

Comment 2 Siddhesh Poyarekar 2022-08-30 17:37:12 UTC

(In reply to Pedro Sampaio from comment #0)
> An infinite loop may be triggered in display_debug_abbrev() function in
> binutils/dwarf.c while opening a crafted ELF, which may lead to denial of
> service by a local attacker.

By that rationale, running `while true; do echo; done` is a security issue.  Is there another reason why this should be considered a security issue?

Comment 3 Siddhesh Poyarekar 2022-09-06 17:57:20 UTC

This will be fixed in #2122675 as a regular bug.  This does not look security-relevant.