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ubuntucveUbuntu.comUB:CVE-2021-1820
HistorySep 08, 2021 - 12:00 a.m.

CVE-2021-1820

2021-09-0800:00:00
ubuntu.com
ubuntu.com
32
cve-2021-1820
memory handling
macos big sur
ios 14.5
ipados 14.5
watchos 7.4
tvos 14.5
malicious web content
disclosure of memory

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

CVSS3

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

EPSS

0.001

Percentile

48.0%

JSON

A memory initialization issue was addressed with improved memory handling.
This issue is fixed in macOS Big Sur 11.3, iOS 14.5 and iPadOS 14.5,
watchOS 7.4, tvOS 14.5. Processing maliciously crafted web content may
result in the disclosure of process memory.

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

Related

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gentoo 1
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ibm 1
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CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

CVSS3

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

EPSS

0.001

Percentile

48.0%

JSON
Related for UB:CVE-2021-1820
veracode1nvd1alpinelinux1debiancve1cvelist1prion1redhatcve1cve1nessus14osv3openvas7redhat1rocky1apple4suse2gentoo1amazon2ibm1