Cross-site scripting (XSS) vulnerability in imp/test.php in Horde Turba Contact Manager H3 2.2.1 and other versions before 2.3.1, and possibly other Horde Project products, allows remote attackers to inject arbitrary web script or HTML via the User field in an IMAP session.

The Linux kernel before 2.6.25.10 does not properly perform tty operations, which allows local users to cause a denial of service (system crash) or possibly gain privileges via vectors involving NULL pointer dereference of function pointers in (1) hamradio/6pack.c, (2) hamradio/mkiss.c, (3) irda/irtty-sir.c, (4) ppp_async.c, (5) ppp_synctty.c, (6) slip.c, (7) wan/x25_asy.c, and (8) wireless/strip.c in drivers/net/.

lib/Driver/sql.php in Turba 2 (turba2) Contact Manager H3 2.1.x before 2.1.7 and 2.2.x before 2.2-RC3, as used in products such as Horde Groupware before 1.0.4 and Horde Groupware Webmail Edition before 1.0.5, does not properly check access rights, which allows remote authenticated users to modify address data via a modified object_id parameter to edit.php, as demonstrated by modifying a personal address book entry when there is write access to a shared address book.

Multiple TCP implementations with Protection Against Wrapped Sequence Numbers (PAWS) with the timestamps option enabled allow remote attackers to cause a denial of service (connection loss) via a spoofed packet with a large timer value, which causes the host to discard later packets because they appear to be too old.