Vulnerability · Published Aug 24, 2021 · Assigned by apple
CVE-2021-30888
High 7.4
In plain English
A high-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 1.7% (higher than 78% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.4High
Exploit odds (30 days)1.7%top 22.3% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
An information leakage issue was addressed. This issue is fixed in iOS 15.1 and iPadOS 15.1, macOS Monterey 12.0.1, iOS 14.8.1 and iPadOS 14.8.1, tvOS 15.1, watchOS 8.1. A malicious website using Content Security Policy reports may be able to leak information via redirect behavior .
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | webkit2gtk3 | 2.34.6-1.el8 | ALSA-2022:1777 |
| AlmaLinux:8 | webkit2gtk3-devel | 2.34.6-1.el8 | ALSA-2022:1777 |
| AlmaLinux:8 | webkit2gtk3-jsc | 2.34.6-1.el8 | ALSA-2022:1777 |
| AlmaLinux:8 | webkit2gtk3-jsc-devel | 2.34.6-1.el8 | ALSA-2022:1777 |
| Alpine:v3.20 | webkit2gtk | 2.34.0-r0 | ALPINE-CVE-2021-30888 |
| Debian:12 | webkit2gtk | 2.34.1-1 | DEBIAN-CVE-2021-30888 |
| Debian:13 | webkit2gtk | 2.34.1-1 | DEBIAN-CVE-2021-30888 |
| Debian:14 | webkit2gtk | 2.34.1-1 | DEBIAN-CVE-2021-30888 |
| Debian:12 | wpewebkit | 2.34.1-1 | DEBIAN-CVE-2021-30888 |
| Debian:13 | wpewebkit | 2.34.1-1 | DEBIAN-CVE-2021-30888 |
| Debian:14 | wpewebkit | 2.34.1-1 | DEBIAN-CVE-2021-30888 |
| Rocky Linux:8 | webkit2gtk3 | 0:2.34.6-1.el8 | RLSA-2022:1777 |
| Ubuntu:22.04:LTS | qtwebkit-opensource-src | no fix listed | UBUNTU-CVE-2021-30888 |
| Ubuntu:24.04:LTS | qtwebkit-opensource-src | no fix listed | UBUNTU-CVE-2021-30888 |
| Ubuntu:22.04:LTS | webkit2gtk | 2.34.0-1ubuntu1 | UBUNTU-CVE-2021-30888 |
| Ubuntu:22.04:LTS | wpewebkit | no fix listed | UBUNTU-CVE-2021-30888 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Apple | iOS and iPadOS | unspecified – before 15.1 |
| Apple | iOS and iPadOS | unspecified – before 14.8 |
| Apple | macOS | unspecified – before 12.0 |
| Apple | macOS | unspecified – before 8.1 |
| Apple | macOS | unspecified – before 15.1 |
References
- https://support.apple.com/en-us/HT212869 x_refsource_MISC
- https://support.apple.com/en-us/HT212867 x_refsource_MISC
- https://support.apple.com/en-us/HT212868 x_refsource_MISC
- https://support.apple.com/en-us/HT212874 x_refsource_MISC
- https://support.apple.com/en-us/HT212876 x_refsource_MISC
- [oss-security] 20211220 WebKitGTK and WPE WebKit Security Advisory WSA-2021-0007 mailing-list, x_refsource_MLIST