Vulnerability Name:

CVE-2021-30841 (CCN-209771)

Assigned:2021-09-20
Published:2021-09-20
Updated:2021-11-05
Summary:This issue was addressed with improved checks. This issue is fixed in iOS 14.8 and iPadOS 14.8, macOS Big Sur 11.6, Security Update 2021-005 Catalina, tvOS 15, iOS 15 and iPadOS 15, watchOS 8. Processing a maliciously crafted dfont file may lead to arbitrary code execution.
CVSS v3 Severity:7.8 High (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
6.8 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
7.8 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
6.8 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:6.8 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
6.8 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-noinfo
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2021-30841

Source: FULLDISC
Type: Mailing List, Release Notes, Third Party Advisory
20211027 APPLE-SA-2021-10-26-9 Additional information for APPLE-SA-2021-09-20-1 iOS 15 and iPadOS 15

Source: FULLDISC
Type: Mailing List, Release Notes, Third Party Advisory
20211027 APPLE-SA-2021-10-26-10 Additional information for APPLE-SA-2021-09-20-2 watchOS 8

Source: FULLDISC
Type: Mailing List, Release Notes, Third Party Advisory
20211027 APPLE-SA-2021-10-26-11 Additional information for APPLE-SA-2021-09-20-3 tvOS 15

Source: XF
Type: UNKNOWN
apple-watchos-cve202130841-code-exec(209771)

Source: MISC
Type: Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT212804

Source: MISC
Type: Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT212805

Source: MISC
Type: Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT212807

Source: MISC
Type: Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT212814

Source: MISC
Type: Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT212815

Source: CCN
Type: Apple security document HT212819
About the security content of watchOS 8

Source: MISC
Type: Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT212819

Vulnerable Configuration:Configuration 1:
  • cpe:/o:apple:ipados:*:*:*:*:*:*:*:* (Version < 14.8)
  • OR cpe:/o:apple:iphone_os:*:*:*:*:*:*:*:* (Version < 14.8)
  • OR cpe:/o:apple:mac_os_x:*:*:*:*:*:*:*:* (Version >= 10.15 and <= 10.15.6)
  • 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:mac_os_x:10.15.7:security_update_2021-002:*:*:*:*:*:*
  • OR cpe:/o:apple:mac_os_x:10.15.7:security_update_2021-003:*:*:*:*:*:*
  • OR cpe:/o:apple:mac_os_x:10.15.7:security_update_2021-004:*:*:*:*:*:*
  • OR cpe:/o:apple:mac_os_x:10.15.7:supplemental_update:*:*:*:*:*:*
  • OR cpe:/o:apple:macos:*:*:*:*:*:*:*:* (Version >= 11.0 and < 11.6)
  • OR cpe:/o:apple:tvos:*:*:*:*:*:*:*:* (Version < 15.0)
  • OR cpe:/o:apple:watchos:*:*:*:*:*:*:*:* (Version < 8.0)

    • * Denotes that component is vulnerable
    BACK
    apple ipados *
    apple iphone os *
    apple mac os x *
    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 mac os x 10.15.7 security_update_2021-002
    apple mac os x 10.15.7 security_update_2021-003
    apple mac os x 10.15.7 security_update_2021-004
    apple mac os x 10.15.7 supplemental_update
    apple macos *
    apple tvos *
    apple watchos *