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ubuntucveUbuntu.comUB:CVE-2021-30795
HistoryJul 27, 2021 - 12:00 a.m.

CVE-2021-30795

2021-07-2700:00:00
ubuntu.com
ubuntu.com
26

9.3 High

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

0.004 Low

EPSS

Percentile

74.4%

JSON

A use after free issue was addressed with improved memory management. This
issue is fixed in iOS 14.7, Safari 14.1.2, macOS Big Sur 11.5, watchOS 7.6,
tvOS 14.7. 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< 2.32.3-0ubuntu0.18.04.1UNKNOWN
ubuntu20.04noarchwebkit2gtk< 2.32.3-0ubuntu0.20.04.1UNKNOWN
ubuntu21.04noarchwebkit2gtk< 2.32.3-0ubuntu0.21.04.1UNKNOWN
ubuntu21.10noarchwebkit2gtk< 2.32.3-1ubuntu1UNKNOWN
ubuntu22.04noarchwebkit2gtk< 2.32.3-1ubuntu1UNKNOWN
ubuntu22.10noarchwebkit2gtk< 2.32.3-1ubuntu1UNKNOWN
ubuntu23.04noarchwebkit2gtk< 2.32.3-1ubuntu1UNKNOWN
ubuntu23.10noarchwebkit2gtk< 2.32.3-1ubuntu1UNKNOWN
ubuntu24.04noarchwebkit2gtk< 2.32.3-1ubuntu1UNKNOWN

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9.3 High

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

0.004 Low

EPSS

Percentile

74.4%

JSON
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