CVE-2016-8689 Information

Description

The read_Header function in archive_read_support_format_7zip.c in libarchive 3.2.1 allows remote attackers to cause a denial of service (out-of-bounds read) via multiple EmptyStream attributes in a header in a 7zip archive.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

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

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5