Vulnerability Note VU#446897
CUPS buffer overflow vulnerability
The Common Unix Printing System contains a buffer overflow vulnerability. This vulnerability may allow a remote attacker to execute arbitrary code.
The Common Unix Printing System (CUPS) is a printing service used by many Linux and Unix operating systems. CUPS uses a print scheduling process that dispatches print jobs and provides the printer's status to local and remote programs.
The Internet Printing Protocol (IPP) is a standard protocol that defines printing and managing print ques. As specified in RFC 2910, the IPP transport layer consists of an HTTP/1.1 request or response. Section 3.5 of RFC 2910 specifies two different types of tags that can either delimit sections of protocols (delimiter tags) or specify the type of each attribute value (value tags). textWithLanguage tags are defined in section 22.214.171.124 and nameWithLanguage is defined in section 126.96.36.199.
The vulnerability is caused due to a boundary error within the "ippReadIO()" function in cups/ipp.c when processing IPP (Internet Printing Protocol) tags. This can be exploited to overwrite one byte on the stack with a zero by sending an IPP request containing specially crafted "textWithLanguage" or "nameWithLanguage" tags.
Successful exploitation allows execution of arbitrary code.
A remote, unauthenticated attacker may be able to execute arbitrary code with the privileges of the user running the CUPS server or cause the server to crash. The cupsd daemon may run with root privileges.
Administrators and users should see the systems affected portion of this document for a partial list of affected vendors. Users who compile CUPS from source should see CUPS Article #508: Common UNIX Printing System 1.3.4 for information about obtaining fixed software.
Systems Affected (Learn More)
|Vendor||Status||Date Notified||Date Updated|
|CUPS, the Common UNIX Printing System||Affected||-||01 Nov 2007|
|Mandriva, Inc.||Affected||01 Nov 2007||06 Nov 2007|
|Red Hat, Inc.||Affected||01 Nov 2007||02 Nov 2007|
|SUSE Linux||Affected||01 Nov 2007||05 Nov 2007|
|Ubuntu||Affected||01 Nov 2007||06 Nov 2007|
|EMC Corporation||Not Affected||01 Nov 2007||02 Nov 2007|
|Hewlett-Packard Company||Not Affected||01 Nov 2007||05 Nov 2007|
|Slackware Linux Inc.||Not Affected||01 Nov 2007||02 Nov 2007|
|Sony Corporation||Not Affected||01 Nov 2007||02 Nov 2007|
|Sun Microsystems, Inc.||Not Affected||01 Nov 2007||05 Nov 2007|
|Apple Computer, Inc.||Unknown||01 Nov 2007||01 Nov 2007|
|Conectiva Inc.||Unknown||01 Nov 2007||01 Nov 2007|
|Cray Inc.||Unknown||01 Nov 2007||01 Nov 2007|
|Debian GNU/Linux||Unknown||01 Nov 2007||01 Nov 2007|
|Engarde Secure Linux||Unknown||01 Nov 2007||01 Nov 2007|
CVSS Metrics (Learn More)
This vulnerability was published in Secunia Advisory 2007-76.
This document was written by Ryan Giobbi.
- CVE IDs: CVE-2007-4351
- Date Public: 31 Oct 2007
- Date First Published: 01 Nov 2007
- Date Last Updated: 18 Dec 2007
- Severity Metric: 11.88
- Document Revision: 22
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