CVE-2016-6321

Public Exploit

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.

Category

7.5
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 6.84% Top 10%
Vendor Advisory gentoo.org Vendor Advisory debian.org Vendor Advisory ubuntu.com Vendor Advisory gnu.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://seclists.org/fulldisclosure/2016/Oct/102 mailing list third party advisory patch
http://www.securityfocus.com/bid/93937 vdb entry third party advisory
https://security.gentoo.org/glsa/201611-19 vendor advisory
http://seclists.org/fulldisclosure/2016/Oct/96 third party advisory mailing list
http://git.savannah.gnu.org/cgit/tar.git/commit/?id=7340f67b9860ea0531c1450e5aa261c50f67165d issue tracking patch
http://lists.gnu.org/archive/html/bug-tar/2016-10/msg00016.html mailing list vendor advisory
http://www.debian.org/security/2016/dsa-3702 vendor advisory
https://sintonen.fi/advisories/tar-extract-pathname-bypass.proper.txt third party advisory
http://packetstormsecurity.com/files/139370/GNU-tar-1.29-Extract-Pathname-Bypass.html exploit vdb entry third party advisory
http://www.ubuntu.com/usn/USN-3132-1 vendor advisory
https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E mailing list
https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E mailing list

Frequently Asked Questions

What is the severity of CVE-2016-6321?
CVE-2016-6321 has been scored as a high severity vulnerability.
How to fix CVE-2016-6321?
To fix CVE-2016-6321, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2016-6321 being actively exploited in the wild?
It is possible that CVE-2016-6321 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~7% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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