Common Weakness Enumeration

CWE-330

Discouraged

Use of Insufficiently Random Values

Abstraction: Class · Status: Stable

API response cwe.mitre.org

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

468 vulnerabilities reference this CWE, most recent first.

CVE-2021-23020 (GCVE-0-2021-23020)

Vulnerability from cvelistv5 – Published: 2021-06-01 12:14 – Updated: 2024-08-03 18:58
VLAI
Summary
The NAAS 3.x before 3.10.0 API keys were generated using an insecure pseudo-random string and hashing algorithm which could lead to predictable keys.
Severity
No CVSS data available.
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a Nginx Controller Affected: “3.x before 3.10.0”
Show details on NVD website
To clipboard 

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CVE-2021-21352 (GCVE-0-2021-21352)

Vulnerability from cvelistv5 – Published: 2021-03-03 00:20 – Updated: 2024-08-03 18:09
VLAI
Title
Predictable tokens used for password resets
Summary
Anuko Time Tracker is an open source, web-based time tracking application written in PHP. In TimeTracker before version 1.19.24.5415 tokens used in password reset feature in Time Tracker are based on system time and, therefore, are predictable. This opens a window for brute force attacks to guess user tokens and, once successful, change user passwords, including that of a system administrator. This vulnerability is pathced in version 1.19.24.5415 (started to use more secure tokens) with an additional improvement in 1.19.24.5416 (limited an available window for brute force token guessing).
Severity
6.8 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
CWE
  • CWE-330 - Use of Insufficiently Random Values
Assigner
References
Impacted products
Vendor Product Version
anuko timetracker Affected: < 1.19.24.5415
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2021-20322 (GCVE-0-2021-20322)

Vulnerability from cvelistv5 – Published: 2022-02-18 17:50 – Updated: 2026-07-30 15:52
VLAI
Summary
A flaw in the processing of received ICMP errors (ICMP fragment needed and ICMP redirect) in the Linux kernel functionality was found to allow the ability to quickly scan open UDP ports. This flaw allows an off-path remote user to effectively bypass the source port UDP randomization. The highest threat from this vulnerability is to confidentiality and possibly integrity, because software that relies on UDP source port randomization are indirectly affected as well.
Severity
No CVSS data available.
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a kernel Affected: 4.15 , < 4.19.215 (custom)
Affected: 4.20 , < 5.4.146 (custom)
Affected: 5.5 , < 5.10.65 (custom)
Affected: 5.11 , < 5.13.17 (custom)
Affected: 5.14 , < 5.14.4 (custom)
Show details on NVD website
To clipboard 

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CVE-2021-4248 (GCVE-0-2021-4248)

Vulnerability from cvelistv5 – Published: 2022-12-18 00:00 – Updated: 2025-04-15 13:00
VLAI
Title
kapetan dns Request.cs entropy
Summary
A vulnerability was found in kapetan dns up to 6.1.0. It has been rated as problematic. Affected by this issue is some unknown functionality of the file DNS/Protocol/Request.cs. The manipulation leads to insufficient entropy in prng. The attack may be launched remotely. Upgrading to version 7.0.0 is able to address this issue. The name of the patch is cf7105aa2aae90d6656088fe5a8ee1d5730773b6. It is recommended to upgrade the affected component. The identifier of this vulnerability is VDB-216188.
Severity
5.6 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-14 17:02 UTC
CWE
  • CWE-330 - Insufficiently Random Values -> CWE-331 Insufficient Entropy -> CWE-332 Insufficient Entropy in PRNG
Assigner
References
Impacted products
Vendor Product Version
kapetan dns Affected: 6.0
Affected: 6.1
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2020-35163 (GCVE-0-2020-35163)

Vulnerability from cvelistv5 – Published: 2022-07-11 19:25 – Updated: 2024-09-17 02:27
VLAI
Summary
Dell BSAFE Crypto-C Micro Edition, versions before 4.1.5, and Dell BSAFE Micro Edition Suite, versions before 4.6, contain a Use of Insufficiently Random Values Vulnerability.
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CWE
  • CWE-330 - Use of Insufficiently Random Values
Assigner
References
Impacted products
Vendor Product Version
Dell Dell BSAFE Crypto-C Micro Edition Affected: unspecified , < 4.1.5, 4.6 (custom)
Create a notification for this product.
Date Public
2020-07-06 00:00
Show details on NVD website
To clipboard 

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CVE-2020-27264 (GCVE-0-2020-27264)

Vulnerability from cvelistv5 – Published: 2021-01-19 20:46 – Updated: 2024-08-04 16:11
VLAI
Summary
In SOOIL Developments Co., Ltd Diabecare RS, AnyDana-i and AnyDana-A, the communication protocol of the insulin pump and its AnyDana-i and AnyDana-A mobile applications use deterministic keys, which allows unauthenticated, physically proximate attackers to brute-force the keys via Bluetooth Low Energy.
Severity
No CVSS data available.
CWE
  • CWE-330 - USE OF INSUFFICIENTLY RANDOM VALUES CWE-330
Assigner
References
Impacted products
Vendor Product Version
n/a SOOIL Developments Co., Ltd Diabecare RS, AnyDana-i and AnyDana-A Affected: Dana Diabecare RS, AnyDana-i, AnyDana-A All versions prior to 3.0
Show details on NVD website
To clipboard 

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CVE-2020-25705 (GCVE-0-2020-25705)

Vulnerability from cvelistv5 – Published: 2020-11-17 01:16 – Updated: 2024-08-04 15:40
VLAI
Summary
A flaw in ICMP packets in the Linux kernel may allow an attacker to quickly scan open UDP ports. This flaw allows an off-path remote attacker to effectively bypass source port UDP randomization. Software that relies on UDP source port randomization are indirectly affected as well on the Linux Based Products (RUGGEDCOM RM1224: All versions between v5.0 and v6.4, SCALANCE M-800: All versions between v5.0 and v6.4, SCALANCE S615: All versions between v5.0 and v6.4, SCALANCE SC-600: All versions prior to v2.1.3, SCALANCE W1750D: v8.3.0.1, v8.6.0, and v8.7.0, SIMATIC Cloud Connect 7: All versions, SIMATIC MV500 Family: All versions, SIMATIC NET CP 1243-1 (incl. SIPLUS variants): Versions 3.1.39 and later, SIMATIC NET CP 1243-7 LTE EU: Version
Severity
No CVSS data available.
CWE
  • CWE-330 - USE OF INSUFFICIENTLY RANDOM VALUES CWE-330
Assigner
References
Impacted products
Vendor Product Version
n/a Siemens Lunux Based Products Affected: RUGGEDCOM RM1224: All versions between v5.0 and v6.4, SCALANCE M-800: All versions between v5.0 and v6.4, SCALANCE S615: All versions between v5.0 and v6.4, SCALANCE SC-600: All versions prior to v2.1.3, SCALANCE W1750D: v8.3.0.1, v8.6.0, and v8.7.0, SIMATIC Cloud Connect 7: All versions, SIMATIC MV500 Family: All versions, SIMATIC NET CP 1243-1 (incl. SIPLUS variants): Versions 3.1.39 and later, SIMATIC NET CP 1243-7 LTE EU: Versions 3.1.39 and later, SIMATIC NET CP 1243-7 LTE US: Versions 3.1.39 and later, SIMATIC NET CP 1243-7: Versions 3.1.39 and later, SIMATIC NET CP 1243-8 IRC: Versions 3.1.39 and later, SIMATIC NET CP 1542SP-1 IRC (incl. SIPLUS variants): Versions 2.0 and later, SIMATIC NET CP 1542SP-1: Versions 2.0 and later, SIMATIC NET CP 1543-1 (incl. SIPLUS variants): Versions 2.2 and later, SIMATIC NET CP 1543SP-1 (incl SIPLUS variants): Versions 2.0 and later, SIMATIC NET CP 1545-1: All versions, SINEMA Remote Connect Server: All versions prior to v3.0 SP1, TIM 1531 IRC (incl. SI ...[truncated*]
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CVE-2020-10729 (GCVE-0-2020-10729)

Vulnerability from cvelistv5 – Published: 2021-05-27 18:46 – Updated: 2024-08-04 11:14
VLAI
Summary
A flaw was found in the use of insufficiently random values in Ansible. Two random password lookups of the same length generate the equal value as the template caching action for the same file since no re-evaluation happens. The highest threat from this vulnerability would be that all passwords are exposed at once for the file. This flaw affects Ansible Engine versions before 2.9.6.
Severity
No CVSS data available.
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a Ansible Affected: ansible-engine 2.9.6
Show details on NVD website
To clipboard 

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CVE-2020-7548 (GCVE-0-2020-7548)

Vulnerability from cvelistv5 – Published: 2020-12-01 14:45 – Updated: 2024-08-04 09:33
VLAI
Summary
A CWE-330 - Use of Insufficiently Random Values vulnerability exists in Smartlink, PowerTag, and Wiser Series Gateways (see security notification for version information) that could allow unauthorized users to login.
Severity
No CVSS data available.
CWE
  • CWE-330 - - Use of Insufficiently Random Values
Assigner
References
Impacted products
Vendor Product Version
n/a Smartlink, PowerTag, and Wiser Series Gateways (see security notification for version information) Affected: Smartlink, PowerTag, and Wiser Series Gateways (see security notification for version information)
Show details on NVD website
To clipboard 

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CVE-2019-25089 (GCVE-0-2019-25089)

Vulnerability from cvelistv5 – Published: 2022-12-27 11:59 – Updated: 2024-08-05 03:00
VLAI
Title
Morgawr Muon handler.clj random values
Summary
A vulnerability has been found in Morgawr Muon 0.1.1 and classified as problematic. Affected by this vulnerability is an unknown functionality of the file src/muon/handler.clj. The manipulation leads to insufficiently random values. The attack can be launched remotely. Upgrading to version 0.2.0-indev is able to address this issue. The name of the patch is c09ed972c020f759110c707b06ca2644f0bacd7f. It is recommended to upgrade the affected component. The identifier VDB-216877 was assigned to this vulnerability.
Severity
3.1 (Low)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
3.1 (Low)
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-07-18 18:26 UTC
CWE
  • CWE-330 - Insufficiently Random Values
Assigner
References
Impacted products
Vendor Product Version
Morgawr Muon Affected: 0.1.1
Create a notification for this product.
Show details on NVD website
To clipboard 

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        {
          "lang": "de",
          "value": "In Morgawr Muon 0.1.1 wurde eine Schwachstelle gefunden. Sie wurde als problematisch eingestuft. Betroffen ist eine unbekannte Verarbeitung der Datei src/muon/handler.clj. Dank Manipulation mit unbekannten Daten kann eine insufficiently random values-Schwachstelle ausgenutzt werden. Der Angriff kann \u00fcber das Netzwerk passieren. Ein Aktualisieren auf die Version 0.2.0-indev vermag dieses Problem zu l\u00f6sen. Der Patch wird als c09ed972c020f759110c707b06ca2644f0bacd7f bezeichnet. Als bestm\u00f6gliche Massnahme wird das Einspielen eines Upgrades empfohlen."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 3.1,
            "baseSeverity": "LOW",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N",
            "version": "3.1"
          }
        },
        {
          "cvssV3_0": {
            "baseScore": 3.1,
            "baseSeverity": "LOW",
            "vectorString": "CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N",
            "version": "3.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-330",
              "description": "CWE-330 Insufficiently Random Values",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-12-27T11:59:00.753Z",
        "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "shortName": "VulDB"
      },
      "references": [
        {
          "tags": [
            "vdb-entry"
          ],
          "url": "https://vuldb.com/?id.216877"
        },
        {
          "tags": [
            "signature",
            "permissions-required"
          ],
          "url": "https://vuldb.com/?ctiid.216877"
        },
        {
          "tags": [
            "issue-tracking"
          ],
          "url": "https://github.com/Morgawr/Muon/issues/4"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/Morgawr/Muon/commit/c09ed972c020f759110c707b06ca2644f0bacd7f"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2022-12-27T00:00:00.000Z",
          "value": "Advisory disclosed"
        },
        {
          "lang": "en",
          "time": "2022-12-27T01:00:00.000Z",
          "value": "VulDB entry created"
        },
        {
          "lang": "en",
          "time": "2022-12-27T13:03:58.000Z",
          "value": "VulDB last update"
        }
      ],
      "title": "Morgawr Muon handler.clj random values"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2019-25089",
    "datePublished": "2022-12-27T11:59:00.753Z",
    "dateReserved": "2022-12-27T11:57:02.318Z",
    "dateUpdated": "2024-08-05T03:00:18.935Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}
Mitigation
Architecture and Design
  • 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.
Mitigation
Implementation

Consider a PRNG that re-seeds itself as needed from high quality pseudo-random output sources, such as hardware devices.

Mitigation MIT-2
Architecture and Design Requirements

Strategy: Libraries or Frameworks

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").

CAPEC-112: Brute Force

In this attack, some asset (information, functionality, identity, etc.) is protected by a finite secret value. The attacker attempts to gain access to this asset by using trial-and-error to exhaustively explore all the possible secret values in the hope of finding the secret (or a value that is functionally equivalent) that will unlock the asset.

CAPEC-485: Signature Spoofing by Key Recreation

An attacker obtains an authoritative or reputable signer's private signature key by exploiting a cryptographic weakness in the signature algorithm or pseudorandom number generation and then uses this key to forge signatures from the original signer to mislead a victim into performing actions that benefit the attacker.

CAPEC-59: Session Credential Falsification through Prediction

This attack targets predictable session ID in order to gain privileges. The attacker can predict the session ID used during a transaction to perform spoofing and session hijacking.

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