CVE-2016-6321 Information

Description

Directory traversal vulnerability in the safer_name_suffix function in GNU tar 1.14 through 1.29 might allow remote attackers to bypass an intended protection mechanism and write to arbitrary files via vectors related to improper sanitization of the file_name parameter aka POINTYFEATHER.

CVSS Vector

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

Reference

http://git.savannah.gnu.org/cgit/tar.git/commit/?id=7340f67b9860ea0531c1450e5aa261c50f67165d http://lists.gnu.org/archive/html/bug-tar/2016-10/msg00016.html http://packetstormsecurity.com/files/139370/GNU-tar-1.29-Extract-Pathname-Bypass.html http://seclists.org/fulldisclosure/2016/Oct/102 http://seclists.org/fulldisclosure/2016/Oct/96 http://www.debian.org/security/2016/dsa-3702 http://www.securityfocus.com/bid/93937 http://www.ubuntu.com/usn/USN-3132-1 https://security.gentoo.org/glsa/201611-19 https://sintonen.fi/advisories/tar-extract-pathname-bypass.proper.txt

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

HIGH

Base Score

NONE

Base Severity

7.5