Vulnerability Name:

CVE-2019-8591 (CCN-161448)

Assigned:2019-05-13
Published:2019-05-13
Updated:2019-12-20
Summary:A type confusion issue was addressed with improved memory handling. This issue is fixed in iOS 12.3, macOS Mojave 10.14.5, tvOS 12.3, watchOS 5.2.1. An application may be able to cause unexpected system termination or write kernel memory.
CVSS v3 Severity:7.1 High (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H)
6.4 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H/E:P/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): None
Integrity (I): High
Availibility (A): High
7.1 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H)
6.4 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H/E:P/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): None
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:8.8 High (CVSS v2 Vector: AV:N/AC:M/Au:N/C:N/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): Complete
Availibility (A): Complete
6.2 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:N/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): None
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-843
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2019-8591

Source: XF
Type: UNKNOWN
apple-ios-cve20198591-dos(161448)

Source: CCN
Type: Packet Storm Security [05-21-2019]
XNU stf_ioctl Bad Cast

Source: CCN
Type: Apple security document HT210118
About the security content of iOS 12.3

Source: MISC
Type: Vendor Advisory
https://support.apple.com/HT210118

Source: MISC
Type: Vendor Advisory
https://support.apple.com/HT210119

Source: MISC
Type: Vendor Advisory
https://support.apple.com/HT210120

Source: MISC
Type: Vendor Advisory
https://support.apple.com/HT210122

Vulnerable Configuration:Configuration 1:
  • cpe:/o:apple:iphone_os:*:*:*:*:*:*:*:* (Version < 12.3)
  • OR cpe:/o:apple:mac_os_x:*:*:*:*:*:*:*:* (Version < 10.14.5)
  • OR cpe:/o:apple:tvos:*:*:*:*:*:*:*:* (Version < 12.3)
  • OR cpe:/o:apple:watchos:*:*:*:*:*:*:*:* (Version < 5.2.1)

    • Configuration CCN 1:
  • cpe:/o:apple:ios:12.2:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    apple iphone os *
    apple mac os x *
    apple tvos *
    apple watchos *
    apple iphone os 12.2