Vulnerability CVE-2020-27930 - CERT Civis.Net

Vulnerability Name:

CVE-2020-27930 (CCN-191272)

Assigned:

2020-11-05

Published:

2020-11-05

Updated:

2021-02-11

Summary:

A memory corruption issue was addressed with improved input validation. This issue is fixed in macOS Big Sur 11.0.1, watchOS 7.1, iOS 12.4.9, watchOS 6.2.9, Security Update 2020-006 High Sierra, Security Update 2020-006 Mojave, iOS 14.2 and iPadOS 14.2, watchOS 5.3.9, macOS Catalina 10.15.7 Supplemental Update, macOS Catalina 10.15.7 Update. Processing a maliciously crafted font 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)
7.0 High (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: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): High Integrity (I): High Availibility (A): High

9.8 Critical (CCN 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 (CCN 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

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

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

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

Vulnerability Type:

Vulnerability Consequences:

Gain Access

References:

Source: MITRE
Type: CNA
CVE-2020-27930

Source: MISC
Type: Third Party Advisory, VDB Entry
http://packetstormsecurity.com/files/161294/Apple-Safari-Remote-Code-Execution.html

Source: FULLDISC
Type: Mailing List, Third Party Advisory
20201215 APPLE-SA-2020-12-14-4 Additional information for APPLE-SA-2020-11-13-1 macOS Big Sur 11.0.1

Source: XF
Type: UNKNOWN
apple-ios-cve202027930-code-exec(191272)

Source: CCN
Type: Packet Storm Security [02-05-2021]
Apple Safari Remote Code Execution

Source: MISC
Type: Vendor Advisory
https://support.apple.com/en-us/HT211928

Source: CCN
Type: Apple security document HT211929
About the security content of iOS 14.2 and iPadOS 14.2

Source: MISC
Type: Vendor Advisory
https://support.apple.com/en-us/HT211929

Source: CCN
Type: Apple security document HT211931
About the security content of macOS Big Sur 11.0.1

Source: MISC
Type: Vendor Advisory
https://support.apple.com/en-us/HT211931

Source: CCN
Type: Apple security document HT211940
About the security content of iOS 12.4.9

Source: MISC
Type: Vendor Advisory
https://support.apple.com/en-us/HT211940

Source: CCN
Type: Apple security document HT211944
About the security content of watchOS 6.2.9

Source: MISC
Type: Vendor Advisory
https://support.apple.com/en-us/HT211944

Source: CCN
Type: Apple security document HT211945
About the security content of watchOS 5.3.9

Source: MISC
Type: Vendor Advisory
https://support.apple.com/en-us/HT211945

Source: CCN
Type: Apple security document HT211946
About the security content of Security Update 2020-006 High Sierra, Security Update 2020-006 Mojave

Source: MISC
Type: Vendor Advisory
https://support.apple.com/en-us/HT211946

Source: CCN
Type: Apple security document HT211947
About the security content of macOS Catalina 10.15.7 Supplemental Update, macOS Catalina 10.15.7 Update

Source: MISC
Type: Vendor Advisory
https://support.apple.com/en-us/HT211947

Source: CCN
Type: CYBERSECURITY & INFRASTRUCTURE SECURITY AGENCY
KNOWN EXPLOITED VULNERABILITIES CATALOG

Vulnerable Configuration:

Configuration 1:

cpe:/o:apple:ipados:*:*:*:*:*:*:*:* (Version < 14.2)

OR cpe:/o:apple:iphone_os:*:*:*:*:*:*:*:* (Version < 12.4.9)

OR cpe:/o:apple:iphone_os:*:*:*:*:*:*:*:* (Version >= 14.0 and < 14.2)

OR cpe:/o:apple:mac_os_x:*:*:*:*:*:*:*:* (Version < 10.15.7)

OR cpe:/o:apple:macos:*:*:*:*:*:*:*:* (Version >= 11.0 and < 11.0.1)

OR cpe:/o:apple:watchos:*:*:*:*:*:*:*:* (Version < 5.3.9)

OR cpe:/o:apple:watchos:*:*:*:*:*:*:*:* (Version >= 6.0 and < 6.2.9)

OR cpe:/o:apple:watchos:*:*:*:*:*:*:*:* (Version >= 7.0 and < 7.1)

Configuration CCN 1:

cpe:/o:apple:macos_high_sierra:10.13.6:*:*:*:*:*:*:*

OR cpe:/o:apple:macos_mojave:10.14.6:*:*:*:*:*:*:*

OR cpe:/o:apple:watchos:6.2.8:*:*:*:*:*:*:*

OR cpe:/o:apple:ios:14.1:*:*:*:*:*:*:*

OR cpe:/o:apple:ipados:14.1:*:*:*:*:*:*:*

OR cpe:/o:apple:watchos:5.3.7:*:*:*:*:*:*:*

OR cpe:/o:apple:ios:12.4.8:*:*:*:*:*:*:*

AND

cpe:/o:apple:macos_catalina:10.15.6:*:*:*:*:*:*:*

Denotes that component is vulnerable