Bug 1625050 (CVE-2018-16402) - CVE-2018-16402 elfutils: Double-free due to double decompression of sections in crafted ELF causes crash
Summary: CVE-2018-16402 elfutils: Double-free due to double decompression of sections ...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2018-16402
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1625051 1625052 1625399 1625400 1625401 1822312
Blocks: 1625054
TreeView+ depends on / blocked
 
Reported: 2018-09-04 04:26 UTC by Sam Fowler
Modified: 2020-04-14 17:41 UTC (History)
23 users (show)

Fixed In Version:
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Clone Of:
Environment:
Last Closed: 2019-08-06 13:19:14 UTC
Embargoed:

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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2019:2197 0 None None None 2019-08-06 12:27:03 UTC
Red Hat Product Errata RHSA-2020:1471 0 None None None 2020-04-14 17:41:11 UTC

Description Sam Fowler 2018-09-04 04:26:47 UTC 
Elfutils through version 0.173 is vulnerable to a double-free in the libelf/elf_end.c:elf_end() function due to the decompression of section data multiple times.. An attacker could exploit this to cause a crash or possibly have unspecified other impact via a crafted ELF.


Upstream Bug:

https://sourceware.org/bugzilla/show_bug.cgi?id=23528


Upstream Patch:

https://sourceware.org/git/?p=elfutils.git;a=patch;h=56b18521fb8d46d40fc090c0de9d11a08bc982fa
Comment 1 Sam Fowler 2018-09-04 04:27:37 UTC 
Created elfutils tracking bugs for this issue:

Affects: fedora-all [bug 1625051]
Comment 4 Scott Gayou 2018-09-04 19:46:04 UTC 
Reproduced on 7+ quite easily. Did not reproduce on 5/6. 6 was running 0.164.
Comment 6 Mark Wielaard 2018-09-04 20:03:42 UTC 
(In reply to Scott Gayou from comment #4)
> Reproduced on 7+ quite easily. Did not reproduce on 5/6. 6 was running 0.164.

That makes sense, support for compressed ELF sections was introduced in elfutils 0.165.
Comment 9 errata-xmlrpc 2019-08-06 12:27:02 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2019:2197 https://access.redhat.com/errata/RHSA-2019:2197
Comment 10 Product Security DevOps Team 2019-08-06 13:19:14 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-2018-16402
Comment 12 errata-xmlrpc 2020-04-14 17:41:09 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7.6 Extended Update Support

Via RHSA-2020:1471 https://access.redhat.com/errata/RHSA-2020:1471
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