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Ubuntu: Linux kernel vulnerabilities  24 September 2007 
Posted by Benjamin D. Thomas   
Evan Teran discovered that the Linux kernel ptrace routines did not correctly handle certain requests robustly. Local attackers could exploit this to crash the system, causing a denial of service. (CVE-2007-3731)
 
Ubuntu: kdm vulnerability  24 September 2007 
Posted by Benjamin D. Thomas   
It was discovered that KDM would allow logins without password checks under certain circumstances. If autologin was configured, and "shutdown with password" enabled, a local user could exploit the problem and gain root privileges.
 
Ubuntu: xfsdump vulnerability  20 September 2007 
Posted by Benjamin D. Thomas   
Paul Martin discovered that xfs_fsr creates a temporary directory with insecure permissions. This allows a local attacker to exploit a race condition in xfs_fsr to read or overwrite arbitrary files on xfs filesystems.
 
Ubuntu: t1lib vulnerability  19 September 2007 
Posted by Benjamin D. Thomas   
It was discovered that t1lib does not properly perform bounds checking which can result in a buffer overflow vulnerability. An attacker could send specially crafted input to applications linked against t1lib which could result in a DoS or arbitrary code execution.
 
Ubuntu: X.org vulnerability  18 September 2007 
Posted by Benjamin D. Thomas   
Aaron Plattner discovered that the Composite extension did not correctly calculate the size of buffers when copying between different bit depths. An authenticated user could exploit this to execute arbitrary code with root privileges.
 
Ubuntu: Qt vulnerability  18 September 2007 
Posted by Benjamin D. Thomas   
Dirk Mueller discovered that UTF8 strings could be made to cause a small buffer overflow. A remote attacker could exploit this by sending specially crafted strings to applications that use the Qt3 library for UTF8 processing, potentially leading to arbitrary code execution with user privileges, or a denial of service.
 
Ubuntu: Quagga vulnerability  15 September 2007 
Posted by Benjamin D. Thomas   
It was discovered that Quagga did not correctly verify OPEN messages or COMMUNITY attributes sent from configured peers. Malicious authenticated remote peers could send a specially crafted message which would cause bgpd to abort, leading to a denial of service.
 
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