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7.5

Apple iOS <4.3 WebKit lets malicious site hijack or crash

CVE-2011-0157 · published 15 years ago
Summary

The WebKit component in iOS versions older than 4.3 can be tricked by a specially crafted web page to corrupt memory. This may let a remote attacker run their own code on the device or cause the browser to crash, effectively denying service. Upgrade the iPhone or iPad to iOS 4.3 or later, or apply any security updates that Apple provides, and avoid visiting untrusted web sites.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
apple webkit All versions
cpe:2.3:a:apple:webkit:*:*:*:*:*:*:*:*
apple iphone_os <= 4.2
1.0.0
1.0.1
1.0.2
1.1.0
1.1.1
1.1.2
1.1.3
1.1.4
1.1.5
2.0
2.0.0
18 more version ranges
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
Original advisory text
WebKit, as used in Apple iOS before 4.3, allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted web site, a different...
WebKit, as used in Apple iOS before 4.3, allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted web site, a different vulnerability than other CVEs listed in APPLE-SA-2011-03-09-1.
References
Fix within
Internet-facing 14 days
Internal 60 days
  • Not known to be exploited
  • Can be exploited automatically (estimated)
  • Gives an attacker partial control (estimated)
Severity
7.5 High
Exploitation
2% chance of attack within 30 days
Type
CWE-119Buffer Overflow
Timeline
Published11 Mar 2011
Updated3 Nov 2026
First seen29 Sep 2026
Sources
CVE-2011-0157 · NVD
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