CVE-2019-12581 Cross-site scripting in n/a
Remote attackers can inject arbitrary web script via the err_msg parameter in Zyxel firewall devices, potentially compromising user sessions.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2019-12581?
CVE-2019-12581 is a medium-severity cross-site scripting vulnerability in n/a, published on 27 Jun 2019. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
A reflective Cross-site scripting (XSS) vulnerability in the free_time_failed.cgi CGI program in selected Zyxel ZyWall, USG, and UAG devices allows remote attackers to inject arbitrary web script or HTML via the err_msg parameter.
Weakness: CWE-79
Which versions are affected by CVE-2019-12581?
It affects 9 products.
Products include Zyxel Uag2100 Firmware, Zyxel Uag4100 Firmware, Zyxel Uag5100 Firmware, Zyxel Usg1100 Firmware, Zyxel Usg110 Firmware, Zyxel Usg1900 Firmware and 3 more.
How do I fix CVE-2019-12581?
No fix has been published for CVE-2019-12581 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2019-12581 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2019-12581 exists.
Public exploit code: 1 Nuclei template.
Other vulnerabilities in n/a
Sources
Also known as GHSA-5f8r-3j92-cp9m.