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Total
3
Critical
0
High
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Medium
0
CISA KEV
0
Buffer overflow in the getnickuserhost function in BNC 2.8.9, and possibly other versions, allows remote IRC servers to execute arbitrary code via an IRC server response that contains many (1) ! (exclamation) or (2) @ (at sign) characters.
BNC 2.9.0 only grants access when an incorrect password is provided, which allows remote attackers to use the functionality intended for authorized users.
The sbuf_getmsg function in BNC incorrectly handles backspace characters, which could allow remote attackers to bypass authentication and gain access to arbitrary scripts.