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Ubuntu
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To browse through our weekly Linux Advisory Watch newsletters, click here.



Ubuntu: Racoon vulnerabilities  08 September 2008 
Posted by Benjamin D. Thomas   
It was discovered that there were multiple ways to leak memory during the IKE negotiation when handling certain packets. If a remote attacker sent repeated malicious requests, the "racoon" key exchange server could allocate large amounts of memory, possibly leading to a denial of service.
 
Ubuntu: libxml2 vulnerability  03 September 2008 
Posted by Benjamin D. Thomas   
Andreas Solberg discovered that libxml2 did not handle recursive entities safely. If an application linked against libxml2 were made to process a specially crafted XML document, a remote attacker could exhaust the system's CPU resources, leading to a denial of service.
 
Ubuntu: tiff vulnerability  02 September 2008 
Posted by Benjamin D. Thomas   
Drew Yao discovered that the TIFF library did not correctly validate LZW compressed TIFF images. If a user or automated system were tricked into processing a malicious image, a remote attacker could execute arbitrary code or cause an application linked against libtiff to crash, leading to a denial of service.
 
Ubuntu: Yelp vulnerability  27 August 2008 
Posted by Benjamin D. Thomas   
Aaron Grattafiori discovered that the Gnome Help Viewer did not handle format strings correctly when displaying certain error messages. If a user were tricked into opening a specially crafted URI, a remote attacker could execute arbitrary code with user privileges.
 
Ubuntu: Linux kernel vulnerabilities  25 August 2008 
Posted by Benjamin D. Thomas   
It was discovered that there were multiple NULL-pointer function dereferences in the Linux kernel terminal handling code. A local attacker could exploit this to execute arbitrary code as root, or crash the system, leading to a denial of service. (CVE-2008-2812)
 
Ubuntu: xine-lib vulnerabilities  19 August 2008 
Posted by Benjamin D. Thomas   
Alin Rad Pop discovered an array index vulnerability in the SDP parser. If a user or automated system were tricked into opening a malicious RTSP stream, a remote attacker may be able to execute arbitrary code with the privileges of the user invoking the program. (CVE-2008-0073)
 
Ubuntu: Postfix vulnerability  19 August 2008 
Posted by Benjamin D. Thomas   
Sebastian Krahmer discovered that Postfix was not correctly handling mailbox ownership when dealing with Linux's implementation of hardlinking to symlinks. In certain mail spool configurations, a local attacker could exploit this to append data to arbitrary files as the root user. The default Ubuntu configuration was not vulnerable.
 
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