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This vulnerability has been modified since it was last analyzed by the NVD. It is awaiting reanalysis which may result in further changes to the information provided.
Help Viewer in Apple Mac OS X before 10.6.2 does not use an HTTPS connection to retrieve Apple Help content from a web site, which allows man-in-the-middle attackers to send a crafted help:runscript link, and thereby execute arbitrary code, via a spoofed response.
View Analysis Description
Access Vector (AV):
Access Complexity (AC):
Victim must voluntarily interact with attack mechanismAllows unauthorized disclosure of informationAllows unauthorized modificationAllows disruption of service
Available for: Mac OS X v10.5.8, Mac OS X Server v10.5.8, Mac OS X v10.6 and v10.6.1, Mac OS X Server v10.6 and v10.6.1
Impact: Using Help Viewer on an untrusted network may result in arbitrary code execution
Description: Help Viewer does not use HTTPS for viewing remote Apple Help content. A user on the local network may send spoofed HTTP responses containing malicious help:runscript links. This update addresses the issue by using HTTPS when requesting remote Apple Help content. Credit to Brian Mastenbrook for reporting this issue.
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