MEDIUM
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.
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
Source: MITRE
Published: 2016-12-09
Updated: 2017-07-01
Type: CWE-22
Base Score: 5
Vector: (AV:N/AC:L/Au:N/C:N/I:P/A:N)
Impact Score: 2.9
Exploitability Score: 10
Severity: MEDIUM
Base Score: 7.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Impact Score: 3.6
Exploitability Score: 3.9
Severity: HIGH