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: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: 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   
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:
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.


Upstream commit:

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):