ID CVE-2020-27906
Summary Multiple integer overflows were addressed with improved input validation. This issue is fixed in macOS Big Sur 11.0.1. A remote attacker may be able to cause unexpected application termination or heap corruption.
References
Vulnerable Configurations
  • cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*
    cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*
  • cpe:2.3:o:apple:macos:10.15.7:*:*:*:*:*:*:*
    cpe:2.3:o:apple:macos:10.15.7:*:*:*:*:*:*:*
  • cpe:2.3:o:apple:macos:11.0:*:*:*:*:*:*:*
    cpe:2.3:o:apple:macos:11.0:*:*:*:*:*:*:*
CVSS
Base: 9.3 (as of 21-07-2021 - 11:39)
Impact:
Exploitability:
CWE CWE-190
CAPEC
  • Forced Integer Overflow
    This attack forces an integer variable to go out of range. The integer variable is often used as an offset such as size of memory allocation or similarly. The attacker would typically control the value of such variable and try to get it out of range. For instance the integer in question is incremented past the maximum possible value, it may wrap to become a very small, or negative number, therefore providing a very incorrect value which can lead to unexpected behavior. At worst the attacker can execute arbitrary code.
Access
VectorComplexityAuthentication
NETWORK MEDIUM NONE
Impact
ConfidentialityIntegrityAvailability
COMPLETE COMPLETE COMPLETE
cvss-vector via4 AV:N/AC:M/Au:N/C:C/I:C/A:C
refmap via4
confirm https://support.apple.com/kb/HT212011
fulldisc
  • 20201215 APPLE-SA-2020-12-14-3 macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security Update 2020-007 Mojave
  • 20201215 APPLE-SA-2020-12-14-4 Additional information for APPLE-SA-2020-11-13-1 macOS Big Sur 11.0.1
misc https://support.apple.com/en-us/HT211931
Last major update 21-07-2021 - 11:39
Published 08-12-2020 - 21:15
Last modified 21-07-2021 - 11:39
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