CVE-2018-1000544

Description

rubyzip gem rubyzip version 1.2.1 and earlier contains a Directory Traversal vulnerability in Zip::File component that can result in write arbitrary files to the filesystem. This attack appear to be exploitable via If a site allows 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..

How to fix CVE-2018-1000544

To remediate CVE-2018-1000544, upgrade the affected package to a fixed version below.

—upgrade to 1.2.2-1 or later
—upgrade to 1.1.6-1+deb8u2 or later
—upgrade to 1.2.0-1.1+deb9u1 or later
—upgrade to 1.2.2 or later

Is CVE-2018-1000544 being exploited?

Low — EPSS is 4.5%, meaning exploitation activity has not been observed at scale.

Affected packages (4)

from 0, < 1.2.2-1
from 0, < 1.1.6-1+deb8u2
from 0, < 1.2.0-1.1+deb9u1
from 0, < 1.2.2

CVSS scores

Source	Version	Severity	Vector
osv	CVSS 3.1	CRITICAL9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H