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Both vulnerabilities will make the Ethereal application crash. The Q.931 vulnerability also affects Tethereal. It is not known if either vulnerability can be used to make Ethereal or Tethereal run arbitrary code.
An attacker could create a carefully crafted directory on a websitesuch that, if a user connects to that directory using the lftp clientand subsequently issues a 'ls' or 'rels' command, the attacker couldexecute arbitrary code on the users machine.
Phong Nguyen identified a severe bug in the way GnuPG creates anduses ElGamal keys, when those keys are used both to sign and encryptdata. This vulnerability can be used to trivially recover theprivate key.
XBoard 4.2.6 and older contains a script which writes to a file in /tmp with a predictable filename. Malicious users could use this vulnerability to force XBoard users to overwrite any file writableby them.
A heap overflow bug exists in rsync versions prior to 2.5.7. Onmachines where the rsync server has been enabled, a remote attackercould use this flaw to execute arbitrary code as an unprivileged user.
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