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CVE-2016-8688

Date: February 15, 2017

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.

Language: C

Severity Score

Related Resources (16)

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://security-tracker.debian.org/tracker/CVE-2016-8688
https://nvd.nist.gov/vuln/detail/CVE-2016-8688
https://bugzilla.redhat.com/show_bug.cgi?id=1377923
https://blogs.gentoo.org/ago/2016/09/11/libarchive-bsdtar-heap-based-buffer-overflow-in-detect_form-archive_read_support_format_mtree-c/
https://github.com/libarchive/libarchive/commit/eec077f52bfa2d3f7103b4b74d52572ba8a15aca
https://access.redhat.com/security/cve/CVE-2016-8688
http://lists.opensuse.org/opensuse-updates/2016-12/msg00027.html
http://www.securityfocus.com/bid/93781
https://lists.debian.org/debian-lts-announce/2018/11/msg00037.html
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/
http://www.openwall.com/lists/oss-security/2016/10/16/11
https://www.mend.io/vulnerability-database/CVE-2016-8688

Severity Score

Weakness Type (CWE)

Out-of-bounds Read

CWE-125

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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