CVE-2018-3955: Command Injection
An exploitable operating system command injection exists in the Linksys ESeries line of routers (Linksys E1200 Firmware Version 2.0.09 and Linksys E2500 Firmware Version 3.0.04). Specially crafted entries to network configuration information can cause execution of arbitrary system commands, resulting in full control of the device. An attacker can send an authenticated HTTP request to trigger this vulnerability. Data entered into the 'Domain Name' input field through the web portal is submitted to apply.cgi as the value to the 'wandomain' POST parameter. The wandomain data goes through the nvramset process described above. When the 'preinit' binary receives the SIGHUP signal it enters a code path that calls a function named 'sethostdomainname' from its libshared.so shared object.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2018-3955?
CVE-2018-3955 is considered a high severity vulnerability due to the potential for remote code execution.
How do I fix CVE-2018-3955?
To address CVE-2018-3955, update the Linksys E1200 to Firmware Version 2.0.10 or the E2500 to Firmware Version 3.0.05 or later.
Which devices are affected by CVE-2018-3955?
CVE-2018-3955 affects Linksys E1200 and E2500 routers running specific firmware versions.
What type of vulnerability is CVE-2018-3955?
CVE-2018-3955 is an operating system command injection vulnerability.
Can CVE-2018-3955 lead to data compromise?
Yes, CVE-2018-3955 can lead to unauthorized access and potential data compromise through arbitrary command execution.