CVE Vulnerabilities

CVE-2021-41993

Use of Insufficiently Random Values

Published: Apr 30, 2022 | Modified: May 10, 2022
CVSS 3.x
4.8
MEDIUM
Source:
NVD
CVSS:3.1/AV:P/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
CVSS 2.x
1.9 LOW
AV:L/AC:M/Au:N/C:P/I:N/A:N
RedHat/V2
RedHat/V3
Ubuntu

A misconfiguration of RSA in PingID Android app prior to 1.19 is vulnerable to pre-computed dictionary attacks, leading to an offline MFA bypass when using PingID Windows Login.

Weakness

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

Affected Software

Name Vendor Start Version End Version
Pingid Pingidentity * 1.19 (excluding)
Pingid_windows_login Pingidentity - (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