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Vulnerability · Published Aug 24, 2021 · Assigned by apple

CVE-2021-30884

Medium 4.7

In plain English

A medium-severity security flaw in iOS and iPadOS from Apple. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 67% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)4.7Medium
Exploit odds (30 days)1.1%top 33.0% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

The issue was resolved with additional restrictions on CSS compositing. This issue is fixed in tvOS 15, watchOS 8, iOS 15 and iPadOS 15. Visiting a maliciously crafted website may reveal a user's browsing history.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:8webkit2gtk32.34.6-1.el8ALSA-2022:1777
AlmaLinux:8webkit2gtk3-devel2.34.6-1.el8ALSA-2022:1777
AlmaLinux:8webkit2gtk3-jsc2.34.6-1.el8ALSA-2022:1777
AlmaLinux:8webkit2gtk3-jsc-devel2.34.6-1.el8ALSA-2022:1777
Alpine:v3.20webkit2gtk2.34.0-r0ALPINE-CVE-2021-30884
Debian:12webkit2gtk2.34.1-1DEBIAN-CVE-2021-30884
Debian:13webkit2gtk2.34.1-1DEBIAN-CVE-2021-30884
Debian:14webkit2gtk2.34.1-1DEBIAN-CVE-2021-30884
Debian:12wpewebkit2.34.1-1DEBIAN-CVE-2021-30884
Debian:13wpewebkit2.34.1-1DEBIAN-CVE-2021-30884
Debian:14wpewebkit2.34.1-1DEBIAN-CVE-2021-30884
Rocky Linux:8webkit2gtk30:2.34.6-1.el8RLSA-2022:1777
Ubuntu:22.04:LTSqtwebkit-opensource-srcno fix listedUBUNTU-CVE-2021-30884
Ubuntu:24.04:LTSqtwebkit-opensource-srcno fix listedUBUNTU-CVE-2021-30884
Ubuntu:22.04:LTSwebkit2gtk2.34.0-1ubuntu1UBUNTU-CVE-2021-30884
Ubuntu:22.04:LTSwpewebkitno fix listedUBUNTU-CVE-2021-30884

Affected products (as reported)

VendorProductVersions
Apple iOS and iPadOS unspecified – before 15
Apple tvOS unspecified – before 15
Apple watchOS unspecified – before 8

References