Bug 1340106 – CVE-2016-5038 libdwarf: Out-of-bounds read in dwarf_get_macro_startend_file()

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Bug 1340106 - (CVE-2016-5038) CVE-2016-5038 libdwarf: Out-of-bounds read in dwarf_get_macro_startend_file()

Summary:	CVE-2016-5038 libdwarf: Out-of-bounds read in dwarf_get_macro_startend_file()

Status:	NEW

Aliases:	CVE-2016-5038

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	low Severity low
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Assigned To:	Red Hat Product Security
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Whiteboard:	impact=low,public=20160512,reported=2...
Keywords:	Security

Depends On:	1340129 1340128
Blocks:
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Reported:	2016-05-26 09:07 EDT by Andrej Nemec
Modified:	2016-05-26 09:48 EDT (History)
CC List:	2 users (show)

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Description Andrej Nemec 2016-05-26 09:07:03 EDT

An out-of-bounds read was found in dwarf_get_macro_startend_file(). Test object shows out of bound read. OOB at: line 772 *src_file_name = macro_context->mc_srcfiles[trueindex]; in dwarf_macro5.c A string offset into .debug_str is outside the bounds of the .debug_str section. 

References:

http://seclists.org/oss-sec/2016/q2/393

External references:

https://www.prevanders.net/dwarfbug.html

Upstream fix:

https://sourceforge.net/p/libdwarf/code/ci/82d8e007851805af0dcaaff41f49a2d48473334b

Comment 1 Andrej Nemec 2016-05-26 09:42:45 EDT

Created libdwarf tracking bugs for this issue:

Affects: fedora-all [bug 1340128]
Affects: epel-6 [bug 1340129]

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