Stack-based buffer overflow in the nim: protocol handler in Novell GroupWise Messenger 2.04 and earlier, and Novell Messenger 2.1.x and 2.2.x before 2.2.2, allows remote attackers to execute arbitrary code via an import command containing a long string in the filename parameter.

Multiple cross-site request forgery (CSRF) vulnerabilities in Mibew Messenger 1.6.4 and earlier allow remote attackers to hijack the authentication of operators for requests that insert cross-site scripting (XSS) sequences via the (1) address or (2) threadid parameters to operator/ban.php; or (3) geolinkparams, (4) title, or (5) chattitle parameters to operator/settings.php.

Integer overflow in the CYImage::LoadJPG method in YImage.dll in Yahoo! Messenger before 11.5.0.155, when photo sharing is enabled, might allow remote attackers to execute arbitrary code via a crafted JPG image that triggers a heap-based buffer overflow.

The server process in Novell Messenger 2.1 and 2.2.x before 2.2.1, and Novell GroupWise Messenger 2.04 and earlier, allows remote attackers to read from arbitrary memory locations via a crafted command.

Novell GroupWise Messenger (GWIM) before 2.0.3 Hot Patch 1 allows remote attackers to cause a denial of service (crash) via a long user ID, possibly involving a popup alert. NOTE: it is not clear whether this issue crosses privilege boundaries.

Messenger Agents (nmma.exe) in Novell GroupWise 2.0.2 and 1.0.6 allows remote attackers to cause a denial of service (crash) via a crafted HTTP POST request to TCP port 8300 with a modified val parameter, which triggers a null dereference related to "zero-size strings in blowfish routines."