Bug 1452591 – CVE-2017-9054 libdwarf: heap-based buffer over-read in _dwarf_decode_s_leb128_chk()

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Bug 1452591 - (CVE-2017-9054) CVE-2017-9054 libdwarf: heap-based buffer over-read in _dwarf_decode_s_leb128_chk()

Summary:	CVE-2017-9054 libdwarf: heap-based buffer over-read in _dwarf_decode_s_leb128...

Status:	NEW

Aliases:	CVE-2017-9054

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=20170321,reported=2...
Keywords:	Security

Depends On:	1452593 1452594
Blocks:
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Reported:	2017-05-19 05:36 EDT by Adam Mariš
Modified:	2017-05-19 05:41 EDT (History)
CC List:	2 users (show)

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Description Adam Mariš 2017-05-19 05:36:45 EDT

An issue, also known as DW201703-002, was discovered in libdwarf 2017-03-21. In _dwarf_decode_s_leb128_chk() a byte pointer was dereferenced just before it was checked for being in bounds, leading to a heap-based buffer over-read.

Reference:

https://www.prevanders.net/dwarfbug.html#DW201703-002

Comment 1 Adam Mariš 2017-05-19 05:40:31 EDT

Created libdwarf tracking bugs for this issue:

Affects: epel-all [bug 1452593]
Affects: fedora-all [bug 1452594]

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