Debian update for node-tar

Published: 2021-11-17

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2021-37701 CVE-2021-37712
CWE-ID	CWE-22
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	node-tar (Debian package) Operating systems & Components / Operating system package or component
Vendor	Debian

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Path traversal

EUVDB-ID: #VU58202

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-37701

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: No

Description

The vulnerability allows a remote attacker to overwrite arbitrary files on the system.

The vulnerability exists due to input validation error when extracting tar files that contained both a directory and a symlink with the same name as the directory, where the symlink and directory names in the archive entry used backslashes as a path separator on posix systems. A remote attacker can create a specially crafted archive and overwrite arbitrary files on the system.

Mitigation

Update node-tar package to version 6.0.5+ds1+~cs11.3.9-1+deb11u2.

Vulnerable software versions

node-tar (Debian package): 6.0.5+ds1+~cs11.3.9-1+deb11u1

External links

http://www.debian.org/security/2021/dsa-5008

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.

2) Path traversal

EUVDB-ID: #VU58203