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AUSCERT Security Bulletin
ASB-2011.0036
Vulnerability is Skype for Mac
9 May 2011
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AusCERT Security Bulletin Summary
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Product: Skype
Operating System: Mac OS X
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Resolution: Patch/Upgrade
Member content until: Wednesday, June 8 2011
OVERVIEW
A vulnerability in Skype for Mac has been found. [1,2]
IMPACT
The reported vulnerability allows a remote attacker to execute code
on a victim's computer by sending a specially crafted message. [2]
MITIGATION
Skype has released version 5.1.0.922 to correct the problem [3].
Currently the update is a manual one, but Skype should be pushing out
the patch next week. [2]
One partial mitigation, is to set Skype to only allow messages from
your Contacts. [1]
REFERENCES
[1] Unpatched Exploit: Skype for MAC
http://isc.sans.edu/diary.html?storyid=10837
[2] Skype 0day vulnerabilitiy discovered by Pure Hacking
http://www.purehacking.com/blogs/gordon-maddern/skype-0day-vulnerabilitiy-discovered-by-pure-hacking
[3] Download Skype 5.1 for Mac
http://www.skype.com/intl/en/get-skype/on-your-computer/macosx
AusCERT has made every effort to ensure that the information contained
in this document is accurate. However, the decision to use the information
described is the responsibility of each user or organisation. The decision to
follow or act on information or advice contained in this security bulletin is
the responsibility of each user or organisation, and should be considered in
accordance with your organisation's site policies and procedures. AusCERT
takes no responsibility for consequences which may arise from following or
acting on information or advice contained in this security bulletin.
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Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072
Internet Email: auscert@auscert.org.au
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for member emergencies only.
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