What’s Vulnerable › Vulnerabilities

CVE-2015-3753

• Severity: medium (CVSS 5.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2015-08-16 · updated 2026-06-17
• Weakness: CWE-200

Description

WebKit in Apple Safari before 6.2.8, 7.x before 7.1.8, and 8.x before 8.0.8, as used in iOS before 8.4.1 and other products, does not properly perform taint checking for CANVAS elements, which allows remote attackers to bypass the Same Origin Policy and obtain sensitive image data by leveraging a redirect to a data:image resource.

Affected products

• Apple Iphone Os: before 8.4.1 — fixed in 8.4.1
• Apple Safari: from 6.0 before 6.2.8; from 7.0 before 7.1.8; from 8.0 before 8.0.8 — fixed in 6.2.8, 7.1.8, 8.0.8

How to fix

Upgrade to a fixed version: Apple Iphone Os 8.4.1; Apple Safari 6.2.8, 7.1.8, 8.0.8. Check the vendor advisory for mitigations.

References

• http://lists.apple.com/archives/security-announce/2015/Aug/msg00000.html
• http://lists.apple.com/archives/security-announce/2015/Aug/msg00002.html
• http://www.securityfocus.com/bid/76341
• http://www.securitytracker.com/id/1033274
• https://support.apple.com/kb/HT205030
• https://support.apple.com/kb/HT205033
• http://lists.apple.com/archives/security-announce/2015/Aug/msg00000.html
• http://lists.apple.com/archives/security-announce/2015/Aug/msg00002.html
• http://www.securityfocus.com/bid/76341
• http://www.securitytracker.com/id/1033274
• https://support.apple.com/kb/HT205030
• https://support.apple.com/kb/HT205033

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