GNU Bash through 4.3 processes trailing strings after function definitions in the values of environment variables, which allows remote attackers to execute arbitrary code via a crafted environment, as demonstrated by vectors involving the ForceCommand feature in OpenSSH sshd, the mod_cgi and mod_cgid modules in the Apache HTTP Server, scripts executed by unspecified DHCP clients, and other situations in which setting the environment occurs across a privilege boundary from Bash execution, aka "ShellShock." NOTE: the original fix for this issue was incorrect; CVE-2014-7169 has been assigned to cover the vulnerability that is still present after the incorrect fix.

An authenticated attacker can use this vulnerability to perform a privilege escalation to gain root access.

A remote unauthenticated attacker can use the firmware update feature on the LAN interface of the device to reset the password for the predefined, low-privileged user “user-app” to the default password.

An unauthenticated remote attacker can use this vulnerability to change the device configuration due to a file writeable for short time after system startup.

A local attacker with low privileges can perform a privilege escalation with an init script due to a TOCTOU vulnerability.

A local attacker with low privileges can use a command injection vulnerability to gain root privileges due to improper input validation using the OCPP Remote service.

A low privileged remote attacker can use a command injection vulnerability in the API which performs remote code execution as the user-app user due to improper input validation. The confidentiality is partly affected.

An unauthenticated remote attacker can extract a session token with a MitM attack and gain web-based management access with the privileges of the currently logged in user due to cleartext transmission of sensitive information. No additional user interaction is required. The access is limited as only non-sensitive information can be obtained but the availability can be seriously affected. 

A local low privileged attacker can use an untrusted search path in a CHARX system utility to gain root privileges. 

An unauthenticated remote attacker can influence the communication due to the lack of encryption of sensitive data via a MITM. Charging is not affected.