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Ubuntu: Dovecot vulnerability  10 January 2008 
Posted by Benjamin D. Thomas   
It was discovered that in very rare configurations using LDAP, Dovecot may reuse cached connections for users with the same password. As a result, a user may be able to login as another if the connection is reused. The default Ubuntu configuration of Dovecot was not vulnerable.
 
Ubuntu: OpenSSH vulnerability  09 January 2008 
Posted by Benjamin D. Thomas   
Jan Pechanec discovered that ssh would forward trusted X11 cookies when untrusted cookie generation failed. This could lead to unintended privileges being forwarded to a remote host.
 
Ubuntu: Squid vulnerability  09 January 2008 
Posted by Benjamin D. Thomas   
It was discovered that Squid did not always clean up cache memory correctly. A remote attacker could manipulate cache update replies and cause Squid to use all available memory, leading to a denial of service.
 
Ubuntu: Net-SNMP vulnerability  09 January 2008 
Posted by Benjamin D. Thomas   
Bill Trost discovered that snmpd did not properly limit GETBULK requests. A remote attacker could specify a large number of max-repetitions and cause a denial of service via resource exhaustion.
 
Ubuntu: CUPS vulnerabilities  09 January 2008 
Posted by Benjamin D. Thomas   
Wei Wang discovered that the SNMP discovery backend did not correctly calculate the length of strings. If a user were tricked into scanning for printers, a remote attacker could send a specially crafted packet and possibly execute arbitrary code.
 
Ubuntu: pwlib vulnerability  09 January 2008 
Posted by Benjamin D. Thomas   
Jose Miguel Esparza discovered that pwlib did not correctly handle large string lengths. A remote attacker could send specially crafted packets to applications linked against pwlib (e.g. Ekiga) causing them to crash, leading to a denial of service.
 
Ubuntu: opal vulnerability  09 January 2008 
Posted by Benjamin D. Thomas   
Jose Miguel Esparza discovered that certain SIP headers were not correctly validated. A remote attacker could send a specially crafted packet to an application linked against opal (e.g. Ekiga) causing it to crash, leading to a denial of service.
 
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