PT-2019-12872 · Zyxel · Zywall+2

Nicolas Thumann · Published 2019-06-27 · Updated 2020-08-24 · CVE-2019-12583

Positive Technologies (AI Summary)

CVSS v3.1

9.1

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Name of the Vulnerable Software and Affected Versions Zyxel UAG, USG, and ZyWall devices (affected versions not specified)

Description The issue concerns a Missing Access Control in the "Free Time" component, allowing a remote attacker to generate guest accounts by directly accessing the account generator. This can lead to unauthorized network access or Denial of Service.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Weakness Enumeration

CWE-425

Related Identifiers

CVE-2019-12583

Affected Products

Zywall

Zyxel Uag

Zyxel Usg

References · 4

• 🔥 https://n-thumann.de/blog/zyxel-gateways-missing-access-control-in-account-generator-xss · Exploit
• https://osv.dev/vulnerability/CVE-2019-12583 · Vendor Advisory
• https://zyxel.com/support/vulnerabilities-related-to-the-Free-Time-feature.shtml · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-12583 · Security Note