CVE-2019-12583 Missing authorization in n/a

Critical 9.1 Published Updated

Remote attackers can bypass access controls to generate guest accounts, leading to unauthorized network access or denial of service.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2019-12583?

CVE-2019-12583 is a critical missing authorization vulnerability in n/a, published on 27 Jun 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Missing Access Control in the "Free Time" component of several Zyxel UAG, USG, and ZyWall devices allows a remote attacker to generate guest accounts by directly accessing the account generator. This can lead to unauthorised network access or Denial of Service.

Weakness: CWE-425

Which versions are affected by CVE-2019-12583?

It affects 14 products.

Products include Zyxel Uag2100 Firmware, Zyxel Uag4100 Firmware, Zyxel Uag5100 Firmware, Zyxel Usg1100 Firmware, Zyxel Usg110 Firmware, Zyxel Usg1900 Firmware and 8 more.

How do I fix CVE-2019-12583?

No fix has been published for CVE-2019-12583 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2019-12583 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2019-12583 exists.

Public exploit code: 1 Nuclei template.

Sources

Also known as CVE-2019-12582, GHSA-cq6f-phq5-pc66.

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