SB2018062627 - Path traversal in Debian Linux

Description

This security bulletin contains information about 1 vulnerability.

1) Path traversal (CVE-ID: CVE-2018-1000544)

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

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences in Zip::File component that can result in write arbitrary files to the filesystem. This attack appear to be exploitable via If a site. A remote authenticated attacker can send a specially crafted HTTP request and uploading of .zip files , an attacker can upload a malicious file that contains symlinks or files with absolute pathnames "./" to write arbitrary files to the filesystem.

Remediation

Cybersecurity Help is not aware of any official remediation provided by the vendor.

References

• https://access.redhat.com/errata/RHSA-2018:3466
• https://github.com/rubyzip/rubyzip/issues/369
• https://lists.debian.org/debian-lts-announce/2018/08/msg00013.html
• https://lists.debian.org/debian-lts-announce/2020/08/msg00002.html