Vulnerability · Published Oct 19, 2021 · Assigned by apple
CVE-2021-30849
High 7.8
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 1.9% (higher than 80% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.8High
Exploit odds (30 days)1.9%top 20.2% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Multiple memory corruption issues were addressed with improved memory handling. This issue is fixed in iOS 14.8 and iPadOS 14.8, watchOS 8, Safari 15, tvOS 15, iOS 15 and iPadOS 15, iTunes 12.12 for Windows. Processing maliciously crafted web content may lead to arbitrary code execution.
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 | 2.32.4-r0 | ALPINE-CVE-2021-30849 |
| Debian:12 | webkit2gtk | 2.32.4-1 | DEBIAN-CVE-2021-30849 |
| Debian:13 | webkit2gtk | 2.32.4-1 | DEBIAN-CVE-2021-30849 |
| Debian:14 | webkit2gtk | 2.32.4-1 | DEBIAN-CVE-2021-30849 |
| Debian:12 | wpewebkit | 2.32.4-1 | DEBIAN-CVE-2021-30849 |
| Debian:13 | wpewebkit | 2.32.4-1 | DEBIAN-CVE-2021-30849 |
| Debian:14 | wpewebkit | 2.32.4-1 | DEBIAN-CVE-2021-30849 |
| 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-2021-30849 |
| Ubuntu:24.04:LTS | qtwebkit-opensource-src | no fix listed | UBUNTU-CVE-2021-30849 |
| Ubuntu:22.04:LTS | wpewebkit | no fix listed | UBUNTU-CVE-2021-30849 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Apple | iOS and iPadOS | unspecified – before 14.8 |
| Apple | iOS and iPadOS | unspecified – before 15 |
| Apple | tvOS | unspecified – before 15 |
| Apple | Safari | unspecified – before 15 |
| Apple | iTunes for Windows | unspecified – before 12.12 |
| Apple | watchOS | unspecified – before 8 |
References
- https://support.apple.com/en-us/HT212807 x_refsource_MISC
- https://support.apple.com/en-us/HT212814 x_refsource_MISC
- https://support.apple.com/en-us/HT212819 x_refsource_MISC
- https://support.apple.com/en-us/HT212815 x_refsource_MISC
- https://support.apple.com/en-us/HT212817 x_refsource_MISC
- https://support.apple.com/en-us/HT212816 x_refsource_MISC
- [oss-security] 20211026 WebKitGTK and WPE WebKit Security Advisory WSA-2021-0006 mailing-list, x_refsource_MLIST
- [oss-security] 20211027 Re: WebKitGTK and WPE WebKit Security Advisory WSA-2021-0006 mailing-list, x_refsource_MLIST
- [oss-security] 20211027 Re: WebKitGTK and WPE WebKit Security Advisory WSA-2021-0006 mailing-list, x_refsource_MLIST
- 20211027 APPLE-SA-2021-10-26-8 Additional information for APPLE-SA-2021-09-20-5 Safari 15 mailing-list, x_refsource_FULLDISC
- 20211027 APPLE-SA-2021-10-26-10 Additional information for APPLE-SA-2021-09-20-2 watchOS 8 mailing-list, x_refsource_FULLDISC
- 20211027 APPLE-SA-2021-10-26-11 Additional information for APPLE-SA-2021-09-20-3 tvOS 15 mailing-list, x_refsource_FULLDISC
- 20211027 APPLE-SA-2021-10-26-9 Additional information for APPLE-SA-2021-09-20-1 iOS 15 and iPadOS 15 mailing-list, x_refsource_FULLDISC
- [oss-security] 20211027 Re: WebKitGTK and WPE WebKit Security Advisory WSA-2021-0006 mailing-list, x_refsource_MLIST
- https://support.apple.com/kb/HT212869 x_refsource_CONFIRM
- https://support.apple.com/kb/HT212953 x_refsource_CONFIRM