Vulnerability CVE-2019-8662

Vulnerability Name:

CVE-2019-8662 (CCN-164248)

Assigned:

2019-07-22

Published:

2019-07-22

Updated:

2020-08-24

Summary:

This issue was addressed with improved checks. This issue is fixed in iOS 12.4, macOS Mojave 10.14.6, tvOS 12.4, watchOS 5.3. An attacker may be able to trigger a use-after-free in an application deserializing an untrusted NSDictionary.

CVSS v3 Severity:

9.8 Critical (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
8.8 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): Low Privileges Required (PR): None User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): High Integrity (I): High Availibility (A): High

6.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L)
5.7 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:P/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): Low Availibility (A): Low

CVSS v2 Severity:

7.5 High (CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P)

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

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

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Low Athentication (Au): Single_Instance
Impact Metrics:	Confidentiality (C): Partial Integrity (I): Partial Availibility (A): Partial

Vulnerability Type:

CWE-502
CWE-416

Vulnerability Consequences:

Gain Access

References:

Source: MITRE
Type: CNA
CVE-2019-8662

Source: XF
Type: UNKNOWN
apple-watchos-cve20198662-code-exec(164248)

Source: CCN
Type: Packet Storm Security [07-29-2019]
NSKeyedUnarchiver ObjC Object Use-After-Free

Source: CCN
Type: Packet Storm Security [11-11-2019]
iMessage NSSharedKeyDictionary Decode Incorrect Address Read

Source: CCN
Type: Apple security document HT210351
About the security content of tvOS 12.4

Source: CCN
Type: Apple security document HT210353
About the security content of watchOS 5.3

Source: MISC
Type: Vendor Advisory
https://support.apple.com/HT210346

Source: MISC
Type: Vendor Advisory
https://support.apple.com/HT210348

Source: MISC
Type: Vendor Advisory
https://support.apple.com/HT210351

Source: MISC
Type: Vendor Advisory
https://support.apple.com/HT210353

Source: EXPLOIT-DB
Type: EXPLOIT
Offensive Security Exploit Database [07-30-2019]

Source: EXPLOIT-DB
Type: EXPLOIT
Offensive Security Exploit Database 11-11-2019]

Vulnerable Configuration:

Configuration 1:

cpe:/o:apple:iphone_os:*:*:*:*:*:*:*:* (Version < 12.4)

OR cpe:/o:apple:mac_os_x:*:*:*:*:*:*:*:* (Version < 10.14.6)

OR cpe:/o:apple:tvos:*:*:*:*:*:*:*:* (Version < 12.4)

OR cpe:/o:apple:watchos:*:*:*:*:*:*:*:* (Version < 5.3)

Configuration CCN 1:

cpe:/o:apple:tvos:12.4:*:*:*:*:*:*:*

Denotes that component is vulnerable

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