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



Ubuntu: GnuPG vulnerability  29 November 2006 
Posted by Benjamin D. Thomas   
A buffer overflow was discovered in GnuPG. By tricking a user into running gpg interactively on a specially crafted message, an attacker could execute arbitrary code with the user's privileges. This vulnerability is not exposed when running gpg in batch mode.
 
Ubuntu: KOffice vulnerability  29 November 2006 
Posted by Benjamin D. Thomas   
An integer overflow was discovered in KOffice's filtering code. By tricking a user into opening a specially crafted PPT file, attackers could crash KOffice or possibly execute arbitrary code with the user's privileges.
 
Ubuntu: Dovecot vulnerability  28 November 2006 
Posted by Benjamin D. Thomas   
Dovecot was discovered to have an error when handling its index cache files. This error could be exploited by authenticated POP and IMAP users to cause a crash of the Dovecot server, or possibly to execute arbitrary code. Only servers using the non-default option "mmap_disable=yes" were vulnerable.
 
Ubuntu: ImageMagick vulnerability  27 November 2006 
Posted by Benjamin D. Thomas   
Daniel Kobras discovered multiple buffer overflows in ImageMagick's SGI file format decoder. By tricking a user or an automated system into processing a specially crafted SGI image, this could be exploited to execute arbitrary code with the user's privileges.
 
Ubuntu: tar vulnerability  27 November 2006 
Posted by Benjamin D. Thomas   
Teemu Salmela discovered that tar still handled the deprecated GNUTYPE_NAMES record type. This record type could be used to create symlinks that would be followed while unpacking a tar archive. If a user or an automated system were tricked into unpacking a specially crafted tar file, arbitrary files could be overwritten with user privileges.
 
Ubuntu: Thunderbird vulnerabilities  21 November 2006 
Posted by Benjamin D. Thomas   
USN-352-1 fixed a flaw in the verification of PKCS certificate signatures. Ulrich Kuehn discovered a variant of the original attack which the original fix did not cover. (CVE-2006-5462) Various flaws have been reported that allow an attacker to execute arbitrary code with user privileges by tricking the user into opening a malicious email containing JavaScript. Please note that JavaScript is disabled by default for emails, and it is not recommended to enable it. (CVE-2006-5463, CVE-2006-5464, CVE-2006-5747, CVE-2006-5748)
 
Ubuntu: Firefox vulnerabilities  21 November 2006 
Posted by Benjamin D. Thomas   
USN-351-1 fixed a flaw in the verification of PKCS certificate signatures. Ulrich Kuehn discovered a variant of the original attack which the original fix did not cover. (CVE-2006-5462) Various flaws have been reported that allow an attacker to execute arbitrary code with user privileges by tricking the user into opening a malicious web page containing JavaScript. (CVE-2006-5463, CVE-2006-5464, CVE-2006-5747, CVE-2006-5748)
 
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