Buffer overflow in the hfsplus_find_cat function in fs/hfsplus/catalog.c in the Linux kernel before 2.6.28-rc1 allows attackers to cause a denial of service (memory corruption or system crash) via an hfsplus filesystem image with an invalid catalog namelength field, related to the hfsplus_cat_build_key_uni function.

webmail/modules/filesystem/edit.php in U-Mail Webmail server 4.91 allows remote attackers to overwrite arbitrary files via an absolute pathname in the path parameter and arbitrary content in the content parameter. NOTE: this can be leveraged for code execution by writing to a file under the web document root.

Cross-site scripting (XSS) vulnerability in the account module in firmCHANNEL Digital Signage 3.24, and possibly earlier versions, allows remote attackers to inject arbitrary web script or HTML via the action parameter to index.php.

MyBB (aka MyBulletinBoard) 1.4.2 does not properly handle an uploaded file with a nonstandard file type that contains HTML sequences, which allows remote attackers to cause that file to be processed as HTML by Internet Explorer’s content inspection, aka “Incomplete protection against MIME-sniffing.” NOTE: this could be leveraged for XSS and other attacks.

MyBB (aka MyBulletinBoard) 1.4.2 uses insufficient randomness to compose filenames of uploaded files used as attachments, which makes it easier for remote attackers to read these files by guessing filenames.

Cross-site scripting (XSS) vulnerability in the redirect function in functions.php in MyBB (aka MyBulletinBoard) 1.4.2 allows remote attackers to inject arbitrary web script or HTML via the url parameter in a removesubscriptions action to moderation.php, related to use of the ajax option to request a JavaScript redirect. NOTE: this can be leveraged to execute PHP code and bypass cross-site request forgery (CSRF) protection.