Vulnerability Description
A vulnerability was found in tar-fs before 1.16.2. An Arbitrary File Overwrite issue exists when extracting a tarball containing a hardlink to a file that already exists on the system, in conjunction with a later plain file with the same name as the hardlink. This plain file content replaces the existing file content.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Tar-Fs Project | Tar-Fs | < 1.16.2 |
Related Weaknesses (CWE)
References
- https://github.com/mafintosh/tar-fs/commit/06672828e6fa29ac8551b1b6f36c852a9a3c5PatchThird Party Advisory
- https://github.com/mafintosh/tar-fs/compare/d590fc7...a35ce2fPatchThird Party Advisory
- https://hackerone.com/reports/344595ExploitThird Party Advisory
- https://github.com/mafintosh/tar-fs/commit/06672828e6fa29ac8551b1b6f36c852a9a3c5PatchThird Party Advisory
- https://github.com/mafintosh/tar-fs/compare/d590fc7...a35ce2fPatchThird Party Advisory
- https://hackerone.com/reports/344595ExploitThird Party Advisory
FAQ
What is CVE-2018-20835?
CVE-2018-20835 is a vulnerability with a CVSS score of 7.5 (HIGH). A vulnerability was found in tar-fs before 1.16.2. An Arbitrary File Overwrite issue exists when extracting a tarball containing a hardlink to a file that already exists on the system, in conjunction ...
How severe is CVE-2018-20835?
CVE-2018-20835 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2018-20835?
Check the references section above for vendor advisories and patch information. Affected products include: Tar-Fs Project Tar-Fs.