Versions of tar prior to 2.0.0 are affected by an arbitrary file write vulnerability. The vulnerability occurs because tar does not verify that extracted symbolic links to not resolve to targets outside of the extraction root directory.

Recommendation

Update to version 2.0.0 or later

References

• https://nvd.nist.gov/vuln/detail/CVE-2015-8860
• GHSA-gfjr-3jmm-4g9v
• https://github.com/npm/npm/releases/tag/v2.7.5
• https://www.npmjs.com/advisories/57
• http://www.openwall.com/lists/oss-security/2016/04/20/11