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.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2016-6321 from the MITRE CVE dictionary dictionary and NIST NVD.
Red Hat Product Security has rated this issue as having Moderate security
impact, a future update may address this flaw. This issue did not affect the versions of star as shipped with Red Hat Enterprise Linux 5, 6, and 7.
NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.
| Base Score | 5.1 |
|---|---|
| Base Metrics | AV:N/AC:H/Au:N/C:P/I:P/A:P |
| Access Vector | Network |
| Access Complexity | High |
| Authentication | None |
| Confidentiality Impact | Partial |
| Integrity Impact | Partial |
| Availability Impact | Partial |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise Linux 7 | star | Not affected |
| Red Hat Enterprise Linux 7 | tar | Will not fix |
| Red Hat Enterprise Linux 6 | tar | Will not fix |
| Red Hat Enterprise Linux 6 | star | Not affected |
| Red Hat Enterprise Linux 5 | star | Not affected |
| Red Hat Enterprise Linux 5 | tar | Will not fix |
Use the "star" utility provided by the "star" package to process archives from untrusted sources.
Vulmon