CVE-2016-6321
high
CVSS v3
7.5
CVSS v4 NEW
—
VIR risk
7.5
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.
Predictions
Exploit likelihood
83%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| arch | fixed | 1.29-2 | |
| debian | bookworm | fixed | 1.29b-1.1 |
| debian | bullseye | fixed | 1.29b-1.1 |
| debian | forky | fixed | 1.29b-1.1 |
| debian | sid | fixed | 1.29b-1.1 |
| debian | trixie | fixed | 1.29b-1.1 |
References
- https://security.archlinux.org/ASA-201611-11
- 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://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
- https://security.gentoo.org/glsa/201611-19
- https://sintonen.fi/advisories/tar-extract-pathname-bypass.proper.txt
- https://www.suse.com/security/cve/CVE-2016-6321.html
- https://security-tracker.debian.org/tracker/CVE-2016-6321
CWEs
CWE-22
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.