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1. Summary:
Once the victim clicks on a specially crafted Facebook URL they can be redirected to a malicious website.
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2. Description:
Facebook applications use of 'track.php?r=' doesn't sanitize the redirection input properly. This allows an attacker to input any URL that a victim will get redirected too. It is not required for the victim to be login to Facebook for this attack to work.
The following is an example of a vulnerable URL:
1. Summary:
Once the victim clicks on a specially crafted Facebook URL they can be redirected to a malicious website.
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2. Description:
Facebook applications use of 'track.php?r=' doesn't sanitize the redirection input properly. This allows an attacker to input any URL that a victim will get redirected too. It is not required for the victim to be login to Facebook for this attack to work.
The following is an example of a vulnerable URL:
http://apps.facebook.com/truthsaboutu/track.php?r=http://www.securitypentest.com
The following Google search query can be used to find vulnerable URLs:
The following Google search query can be used to find vulnerable URLs:
site:facebook.com inurl:"track.php?" inurl:"r="
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3. Impact:
Potentially allow an attacker to compromise a victim’s Facebook account and/or computer system.
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4. Affected Products:
www.facebook.com
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5. Solution: None
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6. Time Table:
2/27/2011 Reported Vulnerability to the Vendor
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7. Credits:
Discovered by Nathan Power
www.securitypentest.com
Read more: Full-Disclosure list
3. Impact:
Potentially allow an attacker to compromise a victim’s Facebook account and/or computer system.
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4. Affected Products:
www.facebook.com
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5. Solution: None
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6. Time Table:
2/27/2011 Reported Vulnerability to the Vendor
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7. Credits:
Discovered by Nathan Power
www.securitypentest.com
Read more: Full-Disclosure list