CWE-338

Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)

The product uses a Pseudo-Random Number Generator (PRNG) in a security context, but the PRNG's algorithm is not cryptographically strong.

CVE-2014-2362 (GCVE-0-2014-2362)
Vulnerability from cvelistv5
Published
2014-07-24 14:00
Modified
2025-10-06 17:33
Severity ?
CWE
Summary
OleumTech WIO DH2 Wireless Gateway and Sensor Wireless I/O Modules rely exclusively on a time value for entropy in key generation, which makes it easier for remote attackers to defeat cryptographic protection mechanisms by predicting the time of project creation.
References
Impacted products
Vendor Product Version
OleumTech WIO DH2 Wireless Gateway Version: All versions
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CVE-2023-45237 (GCVE-0-2023-45237)
Vulnerability from cvelistv5
Published
2024-01-16 16:11
Modified
2025-11-04 18:17
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-338 - Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)
Summary
EDK2's Network Package is susceptible to a predictable TCP Initial Sequence Number. This vulnerability can be exploited by an attacker to gain unauthorized access and potentially lead to a loss of Confidentiality.
References
Impacted products
Vendor Product Version
TianoCore edk2 Version: edk2-stable202308
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CVE-2024-52322 (GCVE-0-2024-52322)
Vulnerability from cvelistv5
Published
2025-04-05 16:19
Modified
2025-09-05 13:18
Severity ?
5.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L
CWE
  • CWE-338 - Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)
  • CWE-331 - Insufficient Entropy
Summary
WebService::Xero 0.11 and earlier for Perl uses the rand() function as the default source of entropy, which is not cryptographically secure, for cryptographic functions. Specifically WebService::Xero uses the Data::Random library which specifically states that it is "Useful mostly for test programs". Data::Random uses the rand() function.
References
Impacted products
Vendor Product Version
LOCALSHOP WebService::Xero Version: 0   <
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CVE-2024-56370 (GCVE-0-2024-56370)
Vulnerability from cvelistv5
Published
2025-04-05 18:26
Modified
2025-09-05 13:18
Severity ?
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CWE
  • CWE-338 - Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)
  • CWE-331 - Insufficient Entropy
Summary
Net::Xero 0.044 and earlier for Perl uses the rand() function as the default source of entropy, which is not cryptographically secure, for cryptographic functions. Specifically Net::Xero uses the Data::Random library which specifically states that it is "Useful mostly for test programs". Data::Random uses the rand() function.
References
Impacted products
Vendor Product Version
ELLIOTT Net::Xero Version: 0   <
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CVE-2024-57868 (GCVE-0-2024-57868)
Vulnerability from cvelistv5
Published
2025-04-05 15:35
Modified
2025-09-05 13:18
Severity ?
5.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L
CWE
  • CWE-338 - Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)
  • CWE-331 - Insufficient Entropy
Summary
Web::API 2.8 and earlier for Perl uses the rand() function as the default source of entropy, which is not cryptographically secure, for cryptographic functions. Specifically Web::API uses the Data::Random library which specifically states that it is "Useful mostly for test programs". Data::Random uses the rand() function.
References
Impacted products
Vendor Product Version
LEV Web::API Version: 0   <
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CVE-2024-58036 (GCVE-0-2024-58036)
Vulnerability from cvelistv5
Published
2025-04-05 16:06
Modified
2025-09-05 13:19
Severity ?
5.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L
CWE
  • CWE-338 - Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)
  • CWE-331 - Insufficient Entropy
Summary
Net::Dropbox::API 1.9 and earlier for Perl uses the rand() function as the default source of entropy, which is not cryptographically secure, for cryptographic functions. Specifically Net::Dropbox::API uses the Data::Random library which specifically states that it is "Useful mostly for test programs". Data::Random uses the rand() function.
References
Impacted products
Vendor Product Version
NORBU Net::Dropbox::API Version: 0   <
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CVE-2024-58040 (GCVE-0-2024-58040)
Vulnerability from cvelistv5
Published
2025-09-29 23:54
Modified
2025-09-30 13:37
Severity ?
9.1 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CWE
  • CWE-338 - Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)
  • CWE-331 - Insufficient Entropy
Summary
Crypt::RandomEncryption for Perl version 0.01 uses insecure rand() function during encryption.
References
Impacted products
Vendor Product Version
QWER Crypt::RandomEncryption Version: 0.01   <
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CVE-2024-58135 (GCVE-0-2024-58135)
Vulnerability from cvelistv5
Published
2025-05-03 10:16
Modified
2025-10-20 20:09
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-338 - Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)
Summary
Mojolicious versions from 7.28 for Perl will generate weak HMAC session cookie secrets via "mojo generate app" by default When creating a default app skeleton with the "mojo generate app" tool, a weak secret is written to the application's configuration file using the insecure rand() function, and used for authenticating and protecting the integrity of the application's sessions. This may allow an attacker to brute force the application's session keys.
References
Impacted products
Vendor Product Version
SRI Mojolicious Version: 7.28   <
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CVE-2025-1796 (GCVE-0-2025-1796)
Vulnerability from cvelistv5
Published
2025-03-20 10:08
Modified
2025-10-15 12:50
Severity ?
7.5 (High) - CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-338 - Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)
Summary
A vulnerability in langgenius/dify v0.10.1 allows an attacker to take over any account, including administrator accounts, by exploiting a weak pseudo-random number generator (PRNG) used for generating password reset codes. The application uses `random.randint` for this purpose, which is not suitable for cryptographic use and can be cracked. An attacker with access to workflow tools can extract the PRNG output and predict future password reset codes, leading to a complete compromise of the application.
References
Impacted products
Vendor Product Version
langgenius langgenius/dify Version: unspecified   <
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Show details on NVD website

To clipboard 

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CVE-2025-1828 (GCVE-0-2025-1828)
Vulnerability from cvelistv5
Published
2025-03-10 23:51
Modified
2025-09-09 13:56
Severity ?
8.8 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE
  • CWE-338 - Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)
  • CWE-331 - Insufficient Entropy
Summary
Crypt::Random Perl package 1.05 through 1.55 may use rand() function, which is not cryptographically strong, for cryptographic functions. If the Provider is not specified and /dev/urandom or an Entropy Gathering Daemon (egd) service is not available Crypt::Random will default to use the insecure Crypt::Random::rand provider. In particular, Windows versions of perl will encounter this issue by default.
References
Impacted products
Vendor Product Version
perl Crypt::Random Version: 1.05   < 1.56
 Create a notification for this product.
Show details on NVD website

To clipboard 

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Mitigation

Phase: Implementation

Description:

  • Use functions or hardware which use a hardware-based random number generation for all crypto. This is the recommended solution. Use CyptGenRandom on Windows, or hw_rand() on Linux.

No CAPEC attack patterns related to this CWE.

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