gaim - several vulnerabilities

Stefan Esser discovered several security related problems in Gaim, a
multi-protocol instant messaging client. Not all of them are
applicable for the version in Debian stable, but affected the version
in the unstable distribution at least. The problems were grouped for
the Common Vulnerabilities and Exposures as follows:

• CAN-2004-0005
  When the Yahoo Messenger handler decodes an octal value for email
  notification functions two different kinds of overflows can be
  triggered. When the MIME decoder decoded a quoted printable
  encoded string for email notification two other different kinds of
  overflows can be triggered. These problems only affect the
  version in the unstable distribution.

• CAN-2004-0006
  When parsing the cookies within the HTTP reply header of a Yahoo
  web connection a buffer overflow can happen. When parsing the
  Yahoo Login Webpage the YMSG protocol overflows stack buffers if
  the web page returns oversized values. When splitting a URL into
  its parts a stack overflow can be caused. These problems only
  affect the version in the unstable distribution.

When an oversized keyname is read from a Yahoo Messenger packet a
stack overflow can be triggered. When Gaim is setup to use an HTTP
proxy for connecting to the server a malicious HTTP proxy can
exploit it. These problems affect all versions Debian ships.
However, the connection to Yahoo doesn’t work in the version in
Debian stable.

• CAN-2004-0007
  Internally data is copied between two tokens into a fixed size
  stack buffer without a size check. This only affects the version
  of gaim in the unstable distribution.

• CAN-2004-0008
  When allocating memory for AIM/Oscar DirectIM packets an integer
  overflow can happen, resulting in a heap overflow. This only
  affects the version of gaim in the unstable distribution.

For the stable distribution (woody) these problems has been fixed in
version 0.58-2.4.

For the unstable distribution (sid) these problems has been fixed in
version 0.75-2.

We recommend that you upgrade your gaim packages.