CVE-2021-30666: Apple iOS WebKit Buffer Overflow Vulnerability

Published May 3, 2021
·
Updated

A buffer overflow issue was addressed with improved memory handling.

Other sources

Apple iOS WebKit contains a buffer-overflow vulnerability that leads to code execution when processing maliciously crafted web content. This vulnerability could impact HTML parsers that use WebKit, including but not limited to Apple Safari and non-Apple products which rely on WebKit for HTML processing.

CISA

Credit

yangkang &zerokeeper&bianliang@@dnpushme(360 ATA)

Affected Software

4 affected componentsFixes available
Apple iOS<12.5.3
12.5.3
Apple iOS
Apple iPhone OS<12.5.3
redhat/webkitgtk<2.26.0
2.26.0

Event History

Jul 28, 2021
Data Sourced
via Red Hat·01:38 PM
DescriptionSeverityAffected Software
Sep 8, 2021
CVE Published
via MITRE·02:25 PM
Data Sourced
via MITRE·02:25 PM
DescriptionWeakness
Data Sourced
via NVD·03:15 PM
DescriptionSeverityWeaknessAffected Software
Nov 3, 2021
Known Exploited
via CISA·12:00 AM

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

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Frequently Asked Questions

1

What is CVE-2021-30666?

CVE-2021-30666 is a buffer-overflow vulnerability in Apple iOS WebKit.

2

How does CVE-2021-30666 affect Apple iOS?

CVE-2021-30666 may allow for code execution when processing maliciously crafted web content on Apple iOS.

3

Who is affected by CVE-2021-30666?

Users of Apple iOS versions up to and including 12.5.3 are affected by CVE-2021-30666.

4

How severe is CVE-2021-30666?

CVE-2021-30666 is a buffer-overflow vulnerability that can potentially lead to code execution.

5

How can I fix CVE-2021-30666?

To fix CVE-2021-30666, users should update their Apple iOS to version 12.5.4 or later.

Contact

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