Description
When multiple sockets are allowed to bind to the same port, other services on that port may be stolen or spoofed.
On most systems, a combination of setting the SO_REUSEADDR socket option, and a call to bind() allows any process to bind to a port to which a previous process has bound with INADDR_ANY. This allows a user to bind to the specific address of a server bound to INADDR_ANY on an unprivileged port, and steal its UDP packets/TCP connection.
Modes of Introduction:
– Architecture and Design
Related Weaknesses
CWE-675
CWE-666
Consequences
Confidentiality, Integrity: Read Application Data
Packets from a variety of network services may be stolen or the services spoofed.
Potential Mitigations
Phase: Policy
Description:
Restrict server socket address to known local addresses.
CVE References
