Incorrect Calculation of Buffer Size Affecting bsdtar package, versions *
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-CENTOS7-BSDTAR-1970842
- published26 Jul 2021
- disclosed15 Sept 2016
Introduced: 15 Sep 2016
CVE-2016-8688 (opens in a new tab)How to fix?
There is no fixed version for Centos:7 bsdtar.
NVD Description
Note: Versions mentioned in the description apply only to the upstream bsdtar package and not the bsdtar package as distributed by Centos.
See How to fix? for Centos:7 relevant fixed versions and status.
The mtree bidder in libarchive 3.2.1 does not keep track of line sizes when extending the read-ahead, which allows remote attackers to cause a denial of service (crash) via a crafted file, which triggers an invalid read in the (1) detect_form or (2) bid_entry function in libarchive/archive_read_support_format_mtree.c.
References
- http://www.securityfocus.com/bid/93781
- https://bugzilla.redhat.com/show_bug.cgi?id=1377923
- https://github.com/libarchive/libarchive/commit/eec077f52bfa2d3f7103b4b74d52572ba8a15aca
- https://access.redhat.com/security/cve/CVE-2016-8688
- https://security.gentoo.org/glsa/201701-03
- https://blogs.gentoo.org/ago/2016/09/11/libarchive-bsdtar-heap-based-buffer-overflow-in-bid_entry-archive_read_support_format_mtree-c/
- https://blogs.gentoo.org/ago/2016/09/11/libarchive-bsdtar-heap-based-buffer-overflow-in-detect_form-archive_read_support_format_mtree-c/
- https://blogs.gentoo.org/ago/2016/09/11/libarchive-bsdtar-memory-corruptionunknown-crash-in-bid_entry-archive_read_support_format_mtree-c/
- https://blogs.gentoo.org/ago/2016/09/11/libarchive-bsdtar-use-after-free-in-bid_entry-archive_read_support_format_mtree-c/
- https://blogs.gentoo.org/ago/2016/09/11/libarchive-bsdtar-use-after-free-in-detect_form-archive_read_support_format_mtree-c/
- https://lists.debian.org/debian-lts-announce/2018/11/msg00037.html
- http://www.openwall.com/lists/oss-security/2016/10/16/11
- http://lists.opensuse.org/opensuse-updates/2016-12/msg00027.html