CVE-2016-6321 Path traversal in n/a
Remote attackers can bypass protection mechanisms to write arbitrary files via improper sanitization in GNU tar.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2016-6321?
CVE-2016-6321 is a high-severity path traversal vulnerability in n/a, published on 9 Dec 2016. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-22
Which versions are affected by CVE-2016-6321?
It affects 1 product.
Linux distribution packages (9)
tar SUSE:Linux Enterprise Desktop 12 SP1 | All versions | 1.27.1-11.1 |
tar SUSE:Linux Enterprise Desktop 12 SP2 | All versions | 1.27.1-11.1 |
tar SUSE:Linux Enterprise Server 11 SP4 | All versions | 1.26-1.2.10.1 |
tar SUSE:Linux Enterprise Server 12 SP1 | All versions | 1.27.1-11.1 |
tar SUSE:Linux Enterprise Server 12 SP2 | All versions | 1.27.1-11.1 |
tar SUSE:Linux Enterprise Server for Raspberry Pi 12 SP2 | All versions | 1.27.1-11.1 |
tar SUSE:Linux Enterprise Server for SAP Applications 11 SP4 | All versions | 1.26-1.2.10.1 |
tar SUSE:Linux Enterprise Server for SAP Applications 12 SP1 | All versions | 1.27.1-11.1 |
tar SUSE:Linux Enterprise Server for SAP Applications 12 SP2 | All versions | 1.27.1-11.1 |
Products include Gnu Tar.
How do I fix CVE-2016-6321?
Apply the vendor's patch.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2016-6321 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2016-6321 exists.
Other vulnerabilities in n/a
Sources
Also known as ALPINE-CVE-2016-6321, DEBIAN-CVE-2016-6321, DLA-690-1, DSA-3702-1, GHSA-4qpm-74c6-fg44, MGASA-2016-0386 and 4 more.