Bug 1340106 (CVE-2016-5038)

Summary: CVE-2016-5038 libdwarf: Out-of-bounds read in dwarf_get_macro_startend_file()
Product: [Other] Security Response Reporter: Andrej Nemec <anemec>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED WONTFIX QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: fche, orion
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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Last Closed: 2019-06-08 02:53:01 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On: 1340128, 1340129    
Bug Blocks:    

Description Andrej Nemec 2016-05-26 13:07:03 UTC
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 13:42:45 UTC
Created libdwarf tracking bugs for this issue:

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