CVE-2016-6321

MEDIUM

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.

References

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

Details

Source: MITRE

Published: 2016-12-09

Updated: 2017-07-01

Type: CWE-22

Risk Information

CVSS v2.0

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

CVSS v3.0

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