Attacker Value
Unknown
(1 user assessed)
Exploitability
Unknown
(1 user assessed)
User Interaction
Required
Privileges Required
None
Attack Vector
Local
2

CVE-2020-27930

Disclosure Date: December 08, 2020 •
CVE-2020-27930 CVSS v3 Base Score: 7.8
Exploited in the Wild
Reported by zeroSteiner
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Description

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.

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1
Technical Analysis

Reported as exploited in the wild as part of Google’s 2020 0day vulnerability spreadsheet they made available at https://docs.google.com/spreadsheets/d/1lkNJ0uQwbeC1ZTRrxdtuPLCIl7mlUreoKfSIgajnSyY/edit#gid=1869060786. Original tweet announcing this spreadsheet with the 2020 findings can be found at https://twitter.com/maddiestone/status/1329837665378725888

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CVSS V3 Severity and Metrics
Base Score:
7.8 High
Impact Score:
5.9
Exploitability Score:
1.8
Vector:
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector (AV):
Local
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
Required
Scope (S):
Unchanged
Confidentiality (C):
High
Integrity (I):
High
Availability (A):
High

General Information

Offensive Application
Unknown
Utility Class
Unknown
Ports
Unknown
OS
Unknown
Vulnerable Versions
watchOS 7.1
iOS and iPadOS 14.2
macOS 11.0
macOS 12.4
macOS 6.2
macOS 5.3
macOS 2020
macOS 10.15
Prerequisites
Unknown
Discovered By
Unknown
PoC Author
Unknown
Metasploit Module
Unknown
Reporter
Unknown

Vendors

  • Apple

Products

  • watchOS,
  • iOS and iPadOS,
  • macOS,
  • macOS,
  • macOS,
  • macOS,
  • macOS,
  • macOS

Exploited in the Wild

Reported by:
Reported: November 20, 2020 8:29pm UTC (4 months ago)
Technical Analysis