Updated Ethereal packages that fix various security vulnerabilities are now available.
Ethereal is a program for monitoring network traffic. The MMSE dissector in Ethereal releases 0.10.1 through 0.10.3 contained a buffer overflow flaw. On a system where Ethereal is running, a remote attacker could send malicious packets that could cause Ethereal to crash or execute arbitrary code. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2004-0507 to this issue. In addition, other flaws in Ethereal prior to 0.10.4 were found that could cause it to crash in response to carefully crafted SIP (CAN-2004-0504), AIM (CAN-2004-0505), or SPNEGO (CAN-2004-0506) packets. Users of Ethereal should upgrade to these updated packages, which contain backported security patches that correct these issues.