CVE-2016-8689
First published: Wed Sep 21 2016(Updated: )
A crafted 7zip archive with multiple headers of the same kind could cause calculated values from one being used to interpret the other, leading to out-of-bounds reads of adjacent structures on the heap. Disclosed on oss-security: <a href="http://seclists.org/oss-sec/2016/q3/516">http://seclists.org/oss-sec/2016/q3/516</a> Upstream issue: <a href="https://github.com/libarchive/libarchive/issues/761">https://github.com/libarchive/libarchive/issues/761</a> Upstream fix: <a href="https://github.com/libarchive/libarchive/commit/7f17c79">https://github.com/libarchive/libarchive/commit/7f17c79</a>
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/libarchive | <3.2.2 | 3.2.2 |
| libarchive | =3.2.1 | |
| openSUSE | =42.2 |
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Reference Links
- http://lists.opensuse.org/opensuse-updates/2016-12/msg00027.html
- http://www.openwall.com/lists/oss-security/2016/10/16/11
- http://www.securityfocus.com/bid/93781
- https://blogs.gentoo.org/ago/2016/09/11/libarchive-bsdtar-heap-based-buffer-overflow-in-read_header-archive_read_support_format_7zip-c/
- https://bugzilla.redhat.com/show_bug.cgi?id=1377925
- https://github.com/libarchive/libarchive/commit/7f17c791dcfd8c0416e2cd2485b19410e47ef126
- https://lists.debian.org/debian-lts-announce/2018/11/msg00037.html
- https://security.gentoo.org/glsa/201701-03
- http://seclists.org/oss-sec/2016/q3/516
- https://github.com/libarchive/libarchive/issues/761
- https://github.com/libarchive/libarchive/commit/7f17c79
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1378668
- https://access.redhat.com/security/updates/classification/
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1385670
Frequently Asked Questions
What is the severity of CVE-2016-8689?
CVE-2016-8689 has a medium severity rating due to the potential for out-of-bounds reads.
How do I fix CVE-2016-8689?
To fix CVE-2016-8689, upgrade to the libarchive version 3.2.2 or later.
What software is affected by CVE-2016-8689?
CVE-2016-8689 affects libarchive versions prior to 3.2.2 as well as specific versions on multiple distributions.
What are the impacts of CVE-2016-8689 exploitation?
Exploitation of CVE-2016-8689 could lead to memory corruption and potential arbitrary code execution.
When was CVE-2016-8689 disclosed?
CVE-2016-8689 was disclosed publicly in the third quarter of 2016.
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