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Weakness (CWE)

CWE-341: Predictable from Observable State

Base Draft

A number or object is predictable based on observations that the attacker can make about the state of the system or network, such as time, process ID, etc.

How to prevent it (3 mitigations)
  1. Implementation

    Increase the entropy used to seed a PRNG.

  2. Architecture and Design, Requirements

    Use products or modules that conform to FIPS 140-2 [REF-267] to avoid obvious entropy problems. Consult FIPS 140-2 Annex C ("Approved Random Number Generators").

  3. Implementation

    Use a PRNG that periodically re-seeds itself using input from high-quality sources, such as hardware devices with high entropy. However, do not re-seed too frequently, or else the entropy source might block.

Source: MITRE CWE-341

4 results · Clear filters · Feed

  • Critical 9.1

    Unauthenticated recovery of the Math.random() state behind OAuth tokens, authorization codes, client secrets and organization API keys

    Postiz generates security-sensitive credentials using `Math.random()` instead of a cryptographically secure source. The same helper is used for OAuth access tokens, authorization codes, client secrets, organization API keys, and PKCE verifiers, meaning these …

  • Critical 9.8

    ntopng through 6.6 is vulnerable to Predictable Session Identifier which can lead to Session Hijacking. HTTP session id…

  • Critical 9.1

    Apache::Session::Generate::ModUniqueId versions from 1.54 through 1.94 for Perl session ids are insecure

    Apache::Session::Generate::ModUniqueId versions from 1.54 through 1.94 for Perl session ids are insecure. Apache::Session::Generate::ModUniqueId (added in version 1.54) uses the value of the UNIQUE_ID environment variable for the session id. The UNIQUE_ID var…

  • Critical 9.1

    Predictable password in Keycloak

    A flaw was found in all versions of the Keycloak operator, before version 8.0.2,(community only) where the operator generates a random admin password when installing Keycloak, however the password remains the same when deployed to the same OpenShift namespace.