CVE-2020-3909 - A buffer overflow was addressed with improved bounds checking

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CRITICAL

A buffer overflow was addressed with improved bounds checking

Published Apr 1, 2020

9.8

CRITICAL

CVSS 3.1

EPSS 3.04%

Description

A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 13.4 and iPadOS 13.4, macOS Catalina 10.15.4, tvOS 13.4, watchOS 6.2, iTunes for Windows 12.10.5, iCloud for Windows 10.9.3, iCloud for Windows 7.18. Multiple issues in libxml2.

Affected products

Vendor Apple Product iCloud for Windows Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <iCloud for Windows 10.9.3
Vendor Apple Product iCloud for Windows (Legacy) Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <iCloud for Windows 7.18
Vendor Apple Product iOS Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <iOS 13.4 and iPadOS 13.4
Vendor Apple Product iTunes for Windows Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <iTunes for Windows 12.10.5
Vendor Apple Product macOS Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <macOS Catalina 10.15.4
Vendor Apple Product tvOS Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <tvOS 13.4
Vendor Apple Product watchOS Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <watchOS 6.2

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

Apple

iCloud for Windows

n/a

Version	Status	Constraints
unspecified	affected	<iCloud for Windows 10.9.3

Apple

iCloud for Windows (Legacy)

n/a

Version	Status	Constraints
unspecified	affected	<iCloud for Windows 7.18

Apple

iOS

n/a

Version	Status	Constraints
unspecified	affected	<iOS 13.4 and iPadOS 13.4

Apple

iTunes for Windows

n/a

Version	Status	Constraints
unspecified	affected	<iTunes for Windows 12.10.5

Apple

macOS

n/a

Version	Status	Constraints
unspecified	affected	<macOS Catalina 10.15.4

Apple

tvOS

n/a

Version	Status	Constraints
unspecified	affected	<tvOS 13.4

Apple

watchOS

n/a

Version	Status	Constraints
unspecified	affected	<watchOS 6.2

Remediation

No remediation recorded yet.

Weaknesses (1)

CWE-120

Classic Buffer Overflow

References (8)

https://support.apple.com/HT211100
x_refsource_MISCVendor Advisory
https://support.apple.com/HT211101
x_refsource_MISCVendor Advisory
https://support.apple.com/HT211102
x_refsource_MISCVendor Advisory
https://support.apple.com/HT211103
x_refsource_MISCVendor Advisory
https://support.apple.com/HT211105
x_refsource_MISCVendor Advisory
https://support.apple.com/HT211106
x_refsource_MISCVendor Advisory
https://support.apple.com/HT211107
x_refsource_MISCVendor Advisory
https://www.oracle.com/security-alerts/cpuoct2020.html
x_refsource_MISCThird Party Advisory

Link	Providers	Tags
https://support.apple.com/HT211100		x_refsource_MISCVendor Advisory
https://support.apple.com/HT211101		x_refsource_MISCVendor Advisory
https://support.apple.com/HT211102		x_refsource_MISCVendor Advisory
https://support.apple.com/HT211103		x_refsource_MISCVendor Advisory
https://support.apple.com/HT211105		x_refsource_MISCVendor Advisory
https://support.apple.com/HT211106		x_refsource_MISCVendor Advisory
https://support.apple.com/HT211107		x_refsource_MISCVendor Advisory
https://www.oracle.com/security-alerts/cpuoct2020.html		x_refsource_MISCThird Party Advisory

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner apple

Published Apr 1, 2020

Updated Aug 4, 2024

Reserved Dec 18, 2019

Link CVE-2020-3909

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 17, 2026

Link CVE-2020-3909

Red Hat

Severity n/a

Public date n/a

Links CVE-2020-3909