Risk | Medium |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2021-32804 |
CWE-ID | CWE-36 |
Exploitation vector | Network |
Public exploit | N/A |
Vulnerable software Subscribe |
tar Web applications / JS libraries |
Vendor | npm Inc. |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
EUVDB-ID: #VU58205
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-32804
CWE-ID:
CWE-36 - Absolute Path Traversal
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to overwrite arbitrary files on the system.
The vulnerability exists due to a logic issue when file paths contained repeated path roots such as ////home/user/.bashrc
. node-tar
would only strip a single path root from such paths. When given an
absolute file path with repeating path roots, the resulting path (e.g. ///home/user/.bashrc
) would still resolve to an absolute path, thus allowing arbitrary file creation and overwrite.
Install update from vendor's website.
Vulnerable software versionstar: 3.0.0 - 6.1.0
External linkshttp://github.com/npm/node-tar/commit/1f036ca23f64a547bdd6c79c1a44bc62e8115da4
http://github.com/npm/node-tar/security/advisories/GHSA-3jfq-g458-7qm9
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.