Integer overflow in Trillian 0.74 and earlier, and Trillian Pro 2.01 and earlier, allows remote attackers to cause a denial of service and possibly execute arbitrary code via a directIM packet that triggers a heap-based buffer overflow.
Stack-based buffer overflow in Trillian 0.71 through 0.74f and Trillian Pro 1.0 through 2.01 allows remote attackers to execute arbitrary code via a Yahoo Messenger packet with a long key name.
Trillian 1.0 Pro and 0.74 Freeware allows remote attackers to cause a denial of service (crash) via a TypingUser message in which the "TypingUser" string has been modified.
Multiple buffer overflows in the IRC component of Trillian 0.73 and 0.74 allows remote malicious IRC servers to cause a denial of service and possibly execute arbitrary code via (1) a large response from the server, (2) a JOIN with a long channel name, (3) a long "raw 221" message, (4) a PRIVMSG with a long nickname, or (5) a long response from an IDENT server.
The IRC component of Trillian 0.73 and 0.74 allows remote malicious IRC servers to cause a denial of service (crash) by sending the raw messages (1) 206, (2) 211, (3) 213, (4) 214, (5) 215, (6) 217, (7) 218, (8) 243, (9) 302, (10) 317, (11) 324, (12) 332, (13) 333, (14) 352, and (15) 367.
The IRC component of Trillian 0.73 and 0.74 allows remote malicious IRC servers to cause a denial of service (crash) via a PART message with (1) a missing channel or (2) a channel that the Trillian user is not in.
Format string vulnerability in the error handling of IRC invite responses for Trillian 0.725 and 0.73 allows remote IRC servers to execute arbitrary code via an invite to a channel with format string specifiers in the name.
Cerulean Studios Trillian 0.73 and earlier use weak encrypttion (XOR) for storing user passwords in .ini files in the Trillian directory, which allows local users to gain access to other user accounts.