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Vulnerability · Published Oct 28, 2021 · Assigned by apple

CVE-2021-30836

Medium 5.5

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 66% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)1.1%top 34.1% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

An out-of-bounds read was addressed with improved input validation. This issue is fixed in iOS 14.8 and iPadOS 14.8, tvOS 15, watchOS 8, iOS 15 and iPadOS 15. Processing a maliciously crafted audio file may disclose restricted memory.

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:v3.20webkit2gtk2.32.4-r0ALPINE-CVE-2021-30836
Debian:12webkit2gtk2.32.4-1DEBIAN-CVE-2021-30836
Debian:13webkit2gtk2.32.4-1DEBIAN-CVE-2021-30836
Debian:14webkit2gtk2.32.4-1DEBIAN-CVE-2021-30836
Debian:12wpewebkit2.32.4-1DEBIAN-CVE-2021-30836
Debian:13wpewebkit2.32.4-1DEBIAN-CVE-2021-30836
Debian:14wpewebkit2.32.4-1DEBIAN-CVE-2021-30836
Rocky Linux:8webkit2gtk30:2.34.6-1.el8RLSA-2022:1777
Ubuntu:22.04:LTSqtwebkit-opensource-srcno fix listedUBUNTU-CVE-2021-30836
Ubuntu:24.04:LTSqtwebkit-opensource-srcno fix listedUBUNTU-CVE-2021-30836
Ubuntu:22.04:LTSwpewebkitno fix listedUBUNTU-CVE-2021-30836

Affected products (as reported)

VendorProductVersions
Apple iOS and iPadOS unspecified – before 14.8
Apple iOS and iPadOS unspecified – before 15
Apple tvOS unspecified – before 15
Apple watchOS unspecified – before 8

References