Common Weakness Enumeration

CWE-331

Allowed

Insufficient Entropy

Abstraction: Base · Status: Draft

API response cwe.mitre.org

The product uses an algorithm or scheme that produces insufficient entropy, leaving patterns or clusters of values that are more likely to occur than others.

88 vulnerabilities reference this CWE, most recent first.

CVE-2022-43755 (GCVE-0-2022-43755)

Vulnerability from cvelistv5 – Published: 2023-02-07 00:00 – Updated: 2025-03-25 15:37
VLAI
Title
Rancher: Non-random authentication token
Summary
A Insufficient Entropy vulnerability in SUSE Rancher allows attackers that gained knowledge of the cattle-token to continue abusing this even after the token was renewed. This issue affects: SUSE Rancher Rancher versions prior to 2.6.10; Rancher versions prior to 2.7.1.
Severity
7.1 (High)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-03-25 15:37 UTC
CWE
Assigner
suse CNA
References
Impacted products
Vendor Product Version
SUSE Rancher Affected: Rancher , < 2.6.10 (custom)
Create a notification for this product.
Date Public
2023-01-25 00:00
Show details on NVD website
To clipboard 

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CVE-2022-37401 (GCVE-0-2022-37401)

Vulnerability from cvelistv5 – Published: 2022-08-13 06:40 – Updated: 2024-08-03 10:29
VLAI
Title
Apache OpenOffice Weak Master Keys
Summary
Apache OpenOffice supports the storage of passwords for web connections in the user's configuration database. The stored passwords are encrypted with a single master key provided by the user. A flaw in OpenOffice existed where master key was poorly encoded resulting in weakening its entropy from 128 to 43 bits making the stored passwords vulnerable to a brute force attack if an attacker has access to the users stored config. This issue affects: Apache OpenOffice versions prior to 4.1.13. Reference: CVE-2022-26307 - LibreOffice
Severity
No CVSS data available.
CWE
Assigner
apache CNA
References
Impacted products
Vendor Product Version
Apache Software Foundation Apache OpenOffice Affected: Apache OpenOffice 4 , < 4.1.13 (custom)
Create a notification for this product.
Credits
OpenSource Security GmbH on behalf of the German Federal Office for Information Security
Show details on NVD website
To clipboard 

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CVE-2022-34746 (GCVE-0-2022-34746)

Vulnerability from cvelistv5 – Published: 2022-09-20 01:50 – Updated: 2025-05-29 13:42
VLAI
Summary
An insufficient entropy vulnerability caused by the improper use of randomness sources with low entropy for RSA key pair generation was found in Zyxel GS1900 series firmware versions prior to V2.70. This vulnerability could allow an unauthenticated attacker to retrieve a private key by factoring the RSA modulus N in the certificate of the web administration interface.
Severity
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-05-29 13:42 UTC
CWE
Assigner
Zyxel CNA
References
Impacted products
Show details on NVD website
To clipboard 

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CVE-2022-33738 (GCVE-0-2022-33738)

Vulnerability from cvelistv5 – Published: 2022-07-06 15:10 – Updated: 2024-08-03 08:09
VLAI
Summary
OpenVPN Access Server before 2.11 uses a weak random generator used to create user session token for the web portal
Severity
No CVSS data available.
CWE
Assigner
OpenVPN CNA
References
Impacted products
Vendor Product Version
n/a OpenVPN Access Server Affected: until 2.11
Show details on NVD website
To clipboard 

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CVE-2021-36320 (GCVE-0-2021-36320)

Vulnerability from cvelistv5 – Published: 2021-11-20 01:40 – Updated: 2024-09-16 16:54
VLAI
Summary
Dell Networking X-Series firmware versions prior to 3.0.1.8 contain an authentication bypass vulnerability. A remote unauthenticated attacker may potentially hijack a session and access the webserver by forging the session ID.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE
Assigner
dell CNA
References
Impacted products
Vendor Product Version
Dell Networking X-Series Affected: unspecified , < 3.0.1.9 (custom)
Create a notification for this product.
Date Public
2021-11-03 00:00
Show details on NVD website
To clipboard 

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CVE-2021-36294 (GCVE-0-2021-36294)

Vulnerability from cvelistv5 – Published: 2022-01-25 22:15 – Updated: 2024-09-16 16:22
VLAI
Summary
Dell VNX2 OE for File versions 8.1.21.266 and earlier, contain an authentication bypass vulnerability. A remote unauthenticated attacker may exploit this vulnerability by forging a cookie to login as any user.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
Assigner
dell CNA
References
Impacted products
Vendor Product Version
Dell VNX Control Station Affected: unspecified , < TBD (custom)
Create a notification for this product.
Date Public
2021-09-07 00:00
Show details on NVD website
To clipboard 

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CVE-2021-22727 (GCVE-0-2021-22727)

Vulnerability from cvelistv5 – Published: 2021-07-21 10:43 – Updated: 2024-08-03 18:51
VLAI
Summary
A CWE-331: Insufficient Entropy vulnerability exists in EVlink City (EVC1S22P4 / EVC1S7P4 all versions prior to R8 V3.4.0.1), EVlink Parking (EVW2 / EVF2 / EV.2 all versions prior to R8 V3.4.0.1), and EVlink Smart Wallbox (EVB1A all versions prior to R8 V3.4.0.1 ) that could allow an attacker to gain unauthorized access to the charging station web server
Severity
No CVSS data available.
CWE
Assigner
schneider CNA
References
Impacted products
Vendor Product Version
n/a EVlink City (EVC1S22P4 / EVC1S7P4 all versions prior to R8 V3.4.0.1), EVlink Parking (EVW2 / EVF2 / EV.2 all versions prior to R8 V3.4.0.1), and EVlink Smart Wallbox (EVB1A all versions prior to R8 V3.4.0.1 ) Affected: EVlink City (EVC1S22P4 / EVC1S7P4 all versions prior to R8 V3.4.0.1), EVlink Parking (EVW2 / EVF2 / EV.2 all versions prior to R8 V3.4.0.1), and EVlink Smart Wallbox (EVB1A all versions prior to R8 V3.4.0.1 )
Show details on NVD website
To clipboard 

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CVE-2021-4241 (GCVE-0-2021-4241)

Vulnerability from cvelistv5 – Published: 2022-11-15 00:00 – Updated: 2025-04-15 13:13
VLAI
Title
phpservermon User.php setUserLoggedIn predictable algorithm in random number generator
Summary
A vulnerability, which was classified as problematic, was found in phpservermon. Affected is the function setUserLoggedIn of the file src/psm/Service/User.php. The manipulation leads to use of predictable algorithm in random number generator. The exploit has been disclosed to the public and may be used. The name of the patch is bb10a5f3c68527c58073258cb12446782d223bc3. It is recommended to apply a patch to fix this issue. The identifier of this vulnerability is VDB-213744.
Severity
2.6 (Low)
CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-14 16:57 UTC
CWE
  • CWE-331 - Insufficient Entropy -> CWE-338 Cryptographically Weak PRNG -> CWE-1241 Use of Predictable Algorithm in Random Number Generator
Assigner
VulDB CNA
References
Impacted products
Show details on NVD website
To clipboard 

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CVE-2021-4240 (GCVE-0-2021-4240)

Vulnerability from cvelistv5 – Published: 2022-11-15 00:00 – Updated: 2025-04-15 13:14
VLAI
Title
phpservermon User.php generatePasswordResetToken predictable algorithm in random number generator
Summary
A vulnerability, which was classified as problematic, was found in phpservermon. This affects the function generatePasswordResetToken of the file src/psm/Service/User.php. The manipulation leads to use of predictable algorithm in random number generator. The exploit has been disclosed to the public and may be used. The name of the patch is 3daa804d5f56c55b3ae13bfac368bb84ec632193. It is recommended to apply a patch to fix this issue. The identifier VDB-213717 was assigned to this vulnerability.
Severity
2.6 (Low)
CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-14 16:57 UTC
CWE
  • CWE-331 - Insufficient Entropy -> CWE-338 Cryptographically Weak PRNG -> CWE-1241 Use of Predictable Algorithm in Random Number Generator
Assigner
VulDB CNA
References
Impacted products
Show details on NVD website
To clipboard 

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CVE-2021-3505 (GCVE-0-2021-3505)

Vulnerability from cvelistv5 – Published: 2021-04-19 20:22 – Updated: 2024-08-03 16:53
VLAI
Summary
A flaw was found in libtpms in versions before 0.8.0. The TPM 2 implementation returns 2048 bit keys with ~1984 bit strength due to a bug in the TCG specification. The bug is in the key creation algorithm in RsaAdjustPrimeCandidate(), which is called before the prime number check. The highest threat from this vulnerability is to data confidentiality.
Severity
No CVSS data available.
CWE
Assigner
redhat CNA
References
Impacted products
Vendor Product Version
n/a libtpms Affected: libtpms 0.8.0
Show details on NVD website
To clipboard 

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Mitigation
Implementation

Determine the necessary entropy to adequately provide for randomness and predictability. This can be achieved by increasing the number of bits of objects such as keys and seeds.

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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