TPTI-09-04: Apple Terminal xterm Resize Escape Sequence Memory Corruption Vulnerability http://dvlabs.tippingpoint.com/advisory/TPTI-09-04 June 2, 2009 -- CVE ID: CVE-2009-1717 -- Affected Vendors: Apple -- Affected Products: Apple OS X -- TippingPoint(TM) IPS Customer Protection: TippingPoint IPS customers have been protected against this vulnerability by Digital Vaccine protection filter ID 8152. For further product information on the TippingPoint IPS, visit: http://www.tippingpoint.com -- Vulnerability Details: This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Apple Terminal. User interaction is required to exploit this vulnerability in that the target must visit a malicious page. The specific flaw exists in the handling of 'CSI[4' xterm window resizing escape code. When a very low negative value for (x, y) size is set, an integer overflow occurs resulting in a memory corruption. This can be further leveraged to execute arbitrary code under the context of the logged in user. -- Vendor Response: Apple has issued an update to correct this vulnerability. More details can be found at: http://support.apple.com/kb/HT3549 -- Disclosure Timeline: 2009-05-06 - Vulnerability reported to vendor 2009-06-02 - Coordinated public release of advisory -- Credit: This vulnerability was discovered by: * James King, TippingPoint DVLabs