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Vulnerability Details :

CVE-2025-7394

Summary
Assigner-wolfSSL
Assigner Org ID-50d2cd11-d01a-48ed-9441-5bfce9d63b27
Published At-18 Jul, 2025 | 22:34
Updated At-21 Jul, 2025 | 15:00
Rejected At-
Credits

In the OpenSSL compatibility layer implementation, the function RAND_poll() was not behaving as expected and leading to the potential for predictable values returned from RAND_bytes() after fork() is called. This can lead to weak or predictable random numbers generated in applications that are both using RAND_bytes() and doing fork() operations. This only affects applications explicitly calling RAND_bytes() after fork() and does not affect any internal TLS operations. Although RAND_bytes() documentation in OpenSSL calls out not being safe for use with fork() without first calling RAND_poll(), an additional code change was also made in wolfSSL to make RAND_bytes() behave similar to OpenSSL after a fork() call without calling RAND_poll(). Now the Hash-DRBG used gets reseeded after detecting running in a new process. If making use of RAND_bytes() and calling fork() we recommend updating to the latest version of wolfSSL. Thanks to Per Allansson from Appgate for the report.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:wolfSSL
Assigner Org ID:50d2cd11-d01a-48ed-9441-5bfce9d63b27
Published At:18 Jul, 2025 | 22:34
Updated At:21 Jul, 2025 | 15:00
Rejected At:
▼CVE Numbering Authority (CNA)

In the OpenSSL compatibility layer implementation, the function RAND_poll() was not behaving as expected and leading to the potential for predictable values returned from RAND_bytes() after fork() is called. This can lead to weak or predictable random numbers generated in applications that are both using RAND_bytes() and doing fork() operations. This only affects applications explicitly calling RAND_bytes() after fork() and does not affect any internal TLS operations. Although RAND_bytes() documentation in OpenSSL calls out not being safe for use with fork() without first calling RAND_poll(), an additional code change was also made in wolfSSL to make RAND_bytes() behave similar to OpenSSL after a fork() call without calling RAND_poll(). Now the Hash-DRBG used gets reseeded after detecting running in a new process. If making use of RAND_bytes() and calling fork() we recommend updating to the latest version of wolfSSL. Thanks to Per Allansson from Appgate for the report.

Affected Products
Vendor
wolfSSL
Product
wolfSSL
Repo
https://github.com/wolfssl/wolfssl
Default Status
unaffected
Versions
Affected
  • From 3.15.0 through 5.8.0 (git)
Problem Types
TypeCWE IDDescription
CWECWE-200CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
Type: CWE
CWE ID: CWE-200
Description: CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
Metrics
VersionBase scoreBase severityVector
4.07.0HIGH
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
Version: 4.0
Base score: 7.0
Base severity: HIGH
Vector:
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

finder
Per Allansson
Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://github.com/wolfSSL/wolfssl/blob/master/ChangeLog.md#wolfssl-release-582-july-17-2025
N/A
Hyperlink: https://github.com/wolfSSL/wolfssl/blob/master/ChangeLog.md#wolfssl-release-582-july-17-2025
Resource: N/A
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:facts@wolfssl.com
Published At:18 Jul, 2025 | 23:15
Updated At:22 Jul, 2025 | 13:06

In the OpenSSL compatibility layer implementation, the function RAND_poll() was not behaving as expected and leading to the potential for predictable values returned from RAND_bytes() after fork() is called. This can lead to weak or predictable random numbers generated in applications that are both using RAND_bytes() and doing fork() operations. This only affects applications explicitly calling RAND_bytes() after fork() and does not affect any internal TLS operations. Although RAND_bytes() documentation in OpenSSL calls out not being safe for use with fork() without first calling RAND_poll(), an additional code change was also made in wolfSSL to make RAND_bytes() behave similar to OpenSSL after a fork() call without calling RAND_poll(). Now the Hash-DRBG used gets reseeded after detecting running in a new process. If making use of RAND_bytes() and calling fork() we recommend updating to the latest version of wolfSSL. Thanks to Per Allansson from Appgate for the report.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary4.07.0HIGH
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Type: Secondary
Version: 4.0
Base score: 7.0
Base severity: HIGH
Vector:
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CPE Matches

Weaknesses
CWE IDTypeSource
CWE-200Secondaryfacts@wolfssl.com
CWE ID: CWE-200
Type: Secondary
Source: facts@wolfssl.com
Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References
HyperlinkSourceResource
https://github.com/wolfSSL/wolfssl/blob/master/ChangeLog.md#wolfssl-release-582-july-17-2025facts@wolfssl.com
N/A
Hyperlink: https://github.com/wolfSSL/wolfssl/blob/master/ChangeLog.md#wolfssl-release-582-july-17-2025
Source: facts@wolfssl.com
Resource: N/A

Change History

0
Information is not available yet

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