CVE-2018-10252 Auth bypass in n/a

High 8.1 Published Updated

Attackers can hijack admin sessions by predicting time-based cookies, gaining full control to create backdoor SSIDs on Actiontec devices.

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-2018-10252?

CVE-2018-10252 is a high-severity authentication bypass vulnerability in n/a, published on 14 May 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An issue was discovered on Actiontec WCB6200Q before 1.1.10.20a devices. The admin login session cookie is insecurely generated making admin session hijacking possible. When an admin logs in, a session cookie is generated using the time of day rounded to 10ms. Since the web server returns its current time of day in responses, it is possible to step backward through possible session values until a working one is found. Once a working session ID is found, an attacker then has admin control of the device and can add a secondary SSID to create a backdoor to the network.

Weakness: CWE-384

Which versions are affected by CVE-2018-10252?

It affects 1 product.

Products include Actiontec Wcb6200q Firmware.

How do I fix CVE-2018-10252?

No fix has been published for CVE-2018-10252 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2018-10252 being exploited?

There is no known exploitation of CVE-2018-10252 in the wild and no public exploit code.

Sources

Also known as GHSA-3fww-pf4h-wv5m.

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