CVE-2020-25205

Public Exploit

Description

The web console for Mimosa B5, B5c, and C5x firmware through 2.8.0.2 is vulnerable to stored XSS in the set_banner() function of /var/www/core/controller/index.php. An unauthenticated attacker may set the contents of the /mnt/jffs2/banner.txt file, stored on the device's filesystem, to contain arbitrary JavaScript. The file contents are then used as part of a welcome/banner message presented to unauthenticated users who visit the login page for the web console. This vulnerability does not occur in the older 1.5.x firmware versions.

References

Link	Tags
https://labs.f-secure.com/advisories/	third party advisory
https://labs.f-secure.com/advisories/mimosa-ptp-devices-multiple-vulnerabilities/	third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2020-25205?: CVE-2020-25205 has been scored as a medium severity vulnerability.
How to fix CVE-2020-25205?: To fix CVE-2020-25205, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-25205 being actively exploited in the wild?: It is possible that CVE-2020-25205 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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Description

Category

CWE-79 – Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

References

Frequently Asked Questions