Published:2011/10/17  Last Updated:2011/10/17

Safari for iOS vulnerable to cross-site scripting


Safari for iOS provided by Apple contains a cross-site scripting vulnerability.

Products Affected

  • Safari for iOS
For more information, refer to the information provided by the developer.


Safari for iOS provided by Apple does not support the "attachment" value for the HTTP Content-Disposition header, resulting in a cross-site scripting vulnerability.


Opening a maliciously crafted file may lead to an arbitrary script being executed on the user's web browser.


Update the software
Update to the latest version according to the information provided by the developer.

Vendor Status


JPCERT/CC Addendum

Vulnerability Analysis by JPCERT/CC

Analyzed on 2011.10.17

Measures Conditions Severity
Access Required can be attacked over the Internet using packets
  • High
Authentication anonymous or no authentication (IP addresses do not count)
  • High
User Interaction Required the user must be convinced to take a standard action that does not feel harmful to most users, such as click on a link or view a file
  • Mid
Exploit Complexity some expertise and/or luck required (most buffer overflows, guessing correctly in small space, expertise in Windows function calls)
  • Mid-High

Description of each analysis measures


Yoshinori Ohta of Business Architects Inc. reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.

Other Information

JPCERT Reports
CERT Advisory
CPNI Advisory
CVE CVE-2011-3426
JVN iPedia JVNDB-2011-000088