Vulnerability CVE-2019-8789

Vulnerability Name:

CVE-2019-8789 (CCN-170733)

Assigned:

2019-10-28

Published:

2019-10-28

Updated:

2019-12-23

Summary:

A validation issue existed in the handling of symlinks. This issue was addressed with improved validation of symlinks. This issue is fixed in iOS 13.2 and iPadOS 13.2, macOS Catalina 10.15.1. Parsing a maliciously crafted iBooks file may lead to disclosure of user information.

CVSS v3 Severity:

5.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N)
4.8 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/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): Local 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

4.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N)
3.8 Low (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/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): Low 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

4.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:S/C:P/I:N/A:N)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Low Athentication (Au): Single_Instance
Impact Metrics:	Confidentiality (C): Partial Integrity (I): None Availibility (A): None

Vulnerability Type:

CWE-59

Vulnerability Consequences:

Obtain Information

References:

Source: MITRE
Type: CNA
CVE-2019-8789

Source: XF
Type: UNKNOWN
apple-ios-cve20198789-info-disc(170733)

Source: CCN
Type: Apple security document HT210721
About the security content of iOS 13.2 and iPadOS 13.2

Source: MISC
Type: Vendor Advisory
https://support.apple.com/HT210721

Source: MISC
Type: Vendor Advisory
https://support.apple.com/HT210722

Vulnerable Configuration:

Configuration 1:

cpe:/o:apple:ipados:*:*:*:*:*:*:*:* (Version < 13.2)

OR cpe:/o:apple:iphone_os:*:*:*:*:*:*:*:* (Version < 13.2)

OR cpe:/o:apple:mac_os_x:*:*:*:*:*:*:*:* (Version < 10.15.1)

Configuration CCN 1:

cpe:/o:apple:ios:13.1:*:*:*:*:*:*:*

Denotes that component is vulnerable

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