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ubuntucveUbuntu.comUB:CVE-2021-1799
HistoryMar 24, 2021 - 12:00 a.m.

CVE-2021-1799

2021-03-2400:00:00
ubuntu.com
ubuntu.com
17
macos
security update
catalina
mojave
tvos
watchos
ios
ipados
safari
port validation
malicious website
port redirection
arbitrary servers

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

CVSS3

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

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

EPSS

0.003

Percentile

69.7%

A port redirection issue was addressed with additional port validation.
This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001
Catalina, Security Update 2021-001 Mojave, tvOS 14.4, watchOS 7.3, iOS 14.4
and iPadOS 14.4, Safari 14.0.3. A malicious website may be able to access
restricted ports on arbitrary servers.

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< 2.30.6-0ubuntu0.18.04.1UNKNOWN
ubuntu20.04noarchwebkit2gtk< 2.30.6-0ubuntu0.20.04.1UNKNOWN
ubuntu20.10noarchwebkit2gtk< 2.30.6-0ubuntu0.20.10.1UNKNOWN
ubuntu21.04noarchwebkit2gtk< 2.32.0-1ubuntu3UNKNOWN
ubuntu21.10noarchwebkit2gtk< 2.32.0-1ubuntu3UNKNOWN
ubuntu22.04noarchwebkit2gtk< 2.32.0-1ubuntu3UNKNOWN
ubuntu22.10noarchwebkit2gtk< 2.32.0-1ubuntu3UNKNOWN
ubuntu23.04noarchwebkit2gtk< 2.32.0-1ubuntu3UNKNOWN
ubuntu23.10noarchwebkit2gtk< 2.32.0-1ubuntu3UNKNOWN
ubuntu24.04noarchwebkit2gtk< 2.32.0-1ubuntu3UNKNOWN

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

CVSS3

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

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

EPSS

0.003

Percentile

69.7%