Bug 1771668 (CVE-2019-17451)

Summary:	CVE-2019-17451 binutils: integer overflow leading to a SEGV in _bfd_dwarf2_find_nearest_line in dwarf2.c
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	ailan, aoliva, dvlasenk, erik-fedora, fidencio, fweimer, jakub, klember, ktietz, law, marcandre.lureau, mcermak, mnewsome, mpolacek, mprchlik, nickc, ohudlick, rjones, tborcin, 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:	2020-04-28 16:34:33 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:	1771669, 1771670, 1771672, 1771673, 1779244, 1779245, 1779253, 1779254, 1779255
Bug Blocks:	1771671

Description Guilherme de Almeida Suckevicz 2019-11-12 18:48:12 UTC

An issue was discovered in the Binary File Descriptor (BFD) library (aka libbfd), as distributed in GNU Binutils 2.32. It is an integer overflow leading to a SEGV in _bfd_dwarf2_find_nearest_line in dwarf2.c, as demonstrated by nm.

Reference:
https://sourceware.org/bugzilla/show_bug.cgi?id=25070

Upstream commit:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=336bfbeb1848f4b9558456fdcf283ee8a32d7fd1

Comment 1 Guilherme de Almeida Suckevicz 2019-11-12 18:48:41 UTC

Created binutils tracking bugs for this issue:

Affects: fedora-all [bug 1771669]


Created mingw-binutils tracking bugs for this issue:

Affects: epel-6 [bug 1771673]
Affects: epel-7 [bug 1771672]
Affects: fedora-all [bug 1771670]

Comment 7 Marco Benatto 2019-12-03 19:45:00 UTC

There's an issue on libbfd from binutils package while processing BFD data. When reading BFD sections from an ELF binary to extract debug information, _bfd_dwarf2_slurp_debug_info() doesn't properly validate section's size leading to a integer overflow. An attacker can leverage that by crafting a ELF file which may trigger the bug further causing heap data corruption and DoS.

Comment 8 errata-xmlrpc 2020-04-28 15:54:01 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2020:1797 https://access.redhat.com/errata/RHSA-2020:1797

Comment 9 Product Security DevOps Team 2020-04-28 16:34:33 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2019-17451