CVE Vulnerabilities

CVE-2020-0644

Use of Insufficiently Random Values

Published: Jan 14, 2020 | Modified: Nov 21, 2024
CVSS 3.x
7.8
HIGH
Source:
NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
7.2 HIGH
AV:L/AC:L/Au:N/C:C/I:C/A:C
RedHat/V2
RedHat/V3
Ubuntu
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An elevation of privilege vulnerability exists when Microsoft Windows implements predictable memory section names, aka Windows Elevation of Privilege Vulnerability. This CVE ID is unique from CVE-2020-0635.

Weakness

The product uses insufficiently random numbers or values in a security context that depends on unpredictable numbers.

Affected Software

NameVendorStart VersionEnd Version
Windows_10Microsoft- (including)- (including)
Windows_10Microsoft1607 (including)1607 (including)
Windows_10Microsoft1709 (including)1709 (including)
Windows_10Microsoft1803 (including)1803 (including)
Windows_10Microsoft1809 (including)1809 (including)
Windows_10Microsoft1903 (including)1903 (including)
Windows_10Microsoft1909 (including)1909 (including)
Windows_8.1Microsoft- (including)- (including)
Windows_rt_8.1Microsoft- (including)- (including)
Windows_server_2012Microsoft- (including)- (including)
Windows_server_2012Microsoftr2 (including)r2 (including)
Windows_server_2016Microsoft- (including)- (including)
Windows_server_2016Microsoft1803 (including)1803 (including)
Windows_server_2016Microsoft1903 (including)1903 (including)
Windows_server_2016Microsoft1909 (including)1909 (including)
Windows_server_2019Microsoft- (including)- (including)

Potential Mitigations

  • Use a well-vetted algorithm that is currently considered to be strong by experts in the field, and select well-tested implementations with adequate length seeds.
  • In general, if a pseudo-random number generator is not advertised as being cryptographically secure, then it is probably a statistical PRNG and should not be used in security-sensitive contexts.
  • Pseudo-random number generators can produce predictable numbers if the generator is known and the seed can be guessed. A 256-bit seed is a good starting point for producing a “random enough” number.

References