debdiff.pl in devscripts 2.10.x before 2.10.69 and 2.11.x before 2.11.4 allows remote attackers to obtain system information and execute arbitrary code via the file name in a (1) .dsc or (2) .changes file.
The get_attachment_link function in Template.pm in Bugzilla 2.x and 3.x before 3.6.10, 3.7.x and 4.0.x before 4.0.7, 4.1.x and 4.2.x before 4.2.2, and 4.3.x before 4.3.2 does not check whether an attachment is private before presenting the attachment description within a public comment, which allows remote attackers to obtain sensitive description information by reading a comment.