CVE-2021-30849

2021-10-1900:00:00

ubuntu.com

CVSS2

6.8

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

CVSS3

7.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS

0.001

Percentile

50.8%

JSON

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.

Notes

Author	Note
jdstrand	webkit receives limited support. For details, see https://wiki.ubuntu.com/SecurityTeam/FAQ#webkit webkit in Ubuntu uses the JavaScriptCore (JSC) engine, not V8

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchwebkit2gtk< 2.32.4-0ubuntu0.18.04.1UNKNOWN
ubuntu20.04noarchwebkit2gtk< 2.32.4-0ubuntu0.20.04.1UNKNOWN
ubuntu21.04noarchwebkit2gtk< 2.32.4-0ubuntu0.21.04.1UNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	18.04	noarch	webkit2gtk	< 2.32.4-0ubuntu0.18.04.1	UNKNOWN
ubuntu	20.04	noarch	webkit2gtk	< 2.32.4-0ubuntu0.20.04.1	UNKNOWN
ubuntu	21.04	noarch	webkit2gtk	< 2.32.4-0ubuntu0.21.04.1	UNKNOWN