Vulnerability Name:

CVE-2021-1857 (CCN-200684)

Assigned:2020-12-08
Published:2021-04-26
Updated:2021-09-16
Summary:A memory initialization issue was addressed with improved memory handling. This issue is fixed in iTunes 12.11.3 for Windows, Security Update 2021-002 Catalina, Security Update 2021-003 Mojave, iCloud for Windows 12.3, macOS Big Sur 11.3, watchOS 7.4, tvOS 14.5, iOS 14.5 and iPadOS 14.5. Processing maliciously crafted web content may disclose sensitive user information.
CVSS v3 Severity:6.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N)
5.7 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): None
Availibility (A): None
6.5 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N)
5.7 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): None
Availibility (A): None
CVSS v2 Severity:4.3 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:P/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): None
Availibility (A): None
6.8 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:S/C:C/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Complete
Integrity (I): None
Availibility (A): None
Vulnerability Type:CWE-665
Vulnerability Consequences:Obtain Information
References:Source: MITRE
Type: CNA
CVE-2021-1857

Source: XF
Type: UNKNOWN
apple-ios-cve20211857-info-disc(200684)

Source: CCN
Type: Apple security document HT212317
About the security content of iOS 14.5 and iPadOS 14.5

Source: MISC
Type: Vendor Advisory
https://support.apple.com/en-us/HT212317

Source: MISC
Type: Vendor Advisory
https://support.apple.com/en-us/HT212319

Source: CCN
Type: Apple security document HT212321
About the security content of iCloud for Windows 12.3

Source: MISC
Type: Vendor Advisory
https://support.apple.com/en-us/HT212321

Source: MISC
Type: Vendor Advisory
https://support.apple.com/en-us/HT212323

Source: MISC
Type: Vendor Advisory
https://support.apple.com/en-us/HT212324

Source: MISC
Type: Vendor Advisory
https://support.apple.com/en-us/HT212325

Source: MISC
Type: Vendor Advisory
https://support.apple.com/en-us/HT212326

Source: MISC
Type: Vendor Advisory
https://support.apple.com/en-us/HT212327

Vulnerable Configuration:Configuration 1:
  • cpe:/a:apple:icloud:*:*:*:*:*:windows:*:* (Version < 12.3)
  • OR cpe:/a:apple:itunes:*:*:*:*:*:windows:*:* (Version < 12.11.3)
  • OR cpe:/o:apple:ipados:*:*:*:*:*:*:*:* (Version < 14.5)
  • OR cpe:/o:apple:iphone_os:*:*:*:*:*:*:*:* (Version < 14.5)
  • OR cpe:/o:apple:mac_os_x:10.14:*:*:*:*:*:*:*
  • OR cpe:/o:apple:mac_os_x:10.14.0:*:*:*:*:*:*:*
  • OR cpe:/o:apple:mac_os_x:10.14.1:*:*:*:*:*:*:*
  • OR cpe:/o:apple:mac_os_x:10.14.2:*:*:*:*:*:*:*
  • OR cpe:/o:apple:mac_os_x:10.14.3:*:*:*:*:*:*:*
  • OR cpe:/o:apple:mac_os_x:10.14.4:*:*:*:*:*:*:*
  • OR cpe:/o:apple:mac_os_x:10.14.4:beta4:*:*:*:*:*:*
  • OR cpe:/o:apple:mac_os_x:10.14.5:*:*:*:*:*:*:*
  • OR cpe:/o:apple:mac_os_x:10.14.6:*:*:*:*:*:*:*
  • OR cpe:/o:apple:mac_os_x:10.14.6:-:*:*:*:*:*:*
  • OR cpe:/o:apple:mac_os_x:10.14.6:security_update_2019-001:*:*:*:*:*:*
  • OR cpe:/o:apple:mac_os_x:10.14.6:security_update_2019-002:*:*:*:*:*:*
  • OR cpe:/o:apple:mac_os_x:10.14.6:security_update_2019-004:*:*:*:*:*:*
  • OR cpe:/o:apple:mac_os_x:10.14.6:security_update_2019-005:*:*:*:*:*:*
  • OR cpe:/o:apple:mac_os_x:10.14.6:security_update_2019-006:*:*:*:*:*:*
  • OR cpe:/o:apple:mac_os_x:10.14.6:security_update_2019-007:*:*:*:*:*:*
  • OR cpe:/o:apple:mac_os_x:10.14.6:security_update_2020-001:*:*:*:*:*:*
  • OR cpe:/o:apple:mac_os_x:10.14.6:security_update_2020-002:*:*:*:*:*:*
  • OR cpe:/o:apple:mac_os_x:10.14.6:security_update_2020-003:*:*:*:*:*:*
  • OR cpe:/o:apple:mac_os_x:10.14.6:security_update_2020-004:*:*:*:*:*:*
  • OR cpe:/o:apple:mac_os_x:10.14.6:security_update_2020-005:*:*:*:*:*:*
  • OR cpe:/o:apple:mac_os_x:10.14.6:security_update_2020-006:*:*:*:*:*:*
  • OR cpe:/o:apple:mac_os_x:10.14.6:security_update_2020-007:*:*:*:*:*:*
  • OR cpe:/o:apple:mac_os_x:10.14.6:security_update_2021-001:*:*:*:*:*:*
  • OR cpe:/o:apple:mac_os_x:10.14.6:security_update_2021-002:*:*:*:*:*:*
  • OR cpe:/o:apple:mac_os_x:10.15:*:*:*:*:*:*:*
  • OR cpe:/o:apple:mac_os_x:10.15.1:*:*:*:*:*:*:*
  • OR cpe:/o:apple:mac_os_x:10.15.2:*:*:*:*:*:*:*
  • OR cpe:/o:apple:mac_os_x:10.15.3:*:*:*:*:*:*:*
  • OR cpe:/o:apple:mac_os_x:10.15.4:*:*:*:*:*:*:*
  • OR cpe:/o:apple:mac_os_x:10.15.5:*:*:*:*:*:*:*
  • OR cpe:/o:apple:mac_os_x:10.15.6:*:*:*:*:*:*:*
  • OR cpe:/o:apple:mac_os_x:10.15.6:-:*:*:*:*:*:*
  • OR cpe:/o:apple:mac_os_x:10.15.6:supplemental_update:*:*:*:*:*:*
  • OR cpe:/o:apple:mac_os_x:10.15.7:*:*:*:*:*:*:*
  • OR cpe:/o:apple:mac_os_x:10.15.7:-:*:*:*:*:*:*
  • OR cpe:/o:apple:mac_os_x:10.15.7:security_update_2020:*:*:*:*:*:*
  • OR cpe:/o:apple:mac_os_x:10.15.7:security_update_2020-001:*:*:*:*:*:*
  • OR cpe:/o:apple:mac_os_x:10.15.7:security_update_2020-005:*:*:*:*:*:*
  • OR cpe:/o:apple:mac_os_x:10.15.7:security_update_2020-007:*:*:*:*:*:*
  • OR cpe:/o:apple:mac_os_x:10.15.7:security_update_2021-001:*:*:*:*:*:*
  • OR cpe:/o:apple:macos:*:*:*:*:*:*:*:* (Version >= 11.0 and < 11.3)
  • OR cpe:/o:apple:tvos:*:*:*:*:*:*:*:* (Version < 14.5)
  • OR cpe:/o:apple:watchos:*:*:*:*:*:*:*:* (Version < 7.4)

    • Configuration CCN 1:
  • cpe:/o:apple:ios:14.4:*:*:*:*:*:*:*
  • OR cpe:/o:apple:ipados:14.4:*:*:*:*:*:*:*
  • OR cpe:/a:apple:icloud:12.3:*:*:*:*:windows:*:*

    • * Denotes that component is vulnerable
    BACK
    apple icloud *
    apple itunes *
    apple ipados *
    apple iphone os *
    apple mac os x 10.14
    apple mac os x 10.14.0
    apple mac os x 10.14.1
    apple mac os x 10.14.2
    apple mac os x 10.14.3
    apple mac os x 10.14.4
    apple mac os x 10.14.4 beta4
    apple mac os x 10.14.5
    apple mac os x 10.14.6
    apple mac os x 10.14.6 -
    apple mac os x 10.14.6 security_update_2019-001
    apple mac os x 10.14.6 security_update_2019-002
    apple mac os x 10.14.6 security_update_2019-004
    apple mac os x 10.14.6 security_update_2019-005
    apple mac os x 10.14.6 security_update_2019-006
    apple mac os x 10.14.6 security_update_2019-007
    apple mac os x 10.14.6 security_update_2020-001
    apple mac os x 10.14.6 security_update_2020-002
    apple mac os x 10.14.6 security_update_2020-003
    apple mac os x 10.14.6 security_update_2020-004
    apple mac os x 10.14.6 security_update_2020-005
    apple mac os x 10.14.6 security_update_2020-006
    apple mac os x 10.14.6 security_update_2020-007
    apple mac os x 10.14.6 security_update_2021-001
    apple mac os x 10.14.6 security_update_2021-002
    apple mac os x 10.15
    apple mac os x 10.15.1
    apple mac os x 10.15.2
    apple mac os x 10.15.3
    apple mac os x 10.15.4
    apple mac os x 10.15.5
    apple mac os x 10.15.6
    apple mac os x 10.15.6 -
    apple mac os x 10.15.6 supplemental_update
    apple mac os x 10.15.7
    apple mac os x 10.15.7 -
    apple mac os x 10.15.7 security_update_2020
    apple mac os x 10.15.7 security_update_2020-001
    apple mac os x 10.15.7 security_update_2020-005
    apple mac os x 10.15.7 security_update_2020-007
    apple mac os x 10.15.7 security_update_2021-001
    apple macos *
    apple tvos *
    apple watchos *
    apple ios 14.4
    apple ipados 14.4
    apple icloud 12.3