PT-2024-20913 · Rt-Thread · Rt-Thread

Marco Ivaldi · Published 2024-03-05 · Updated 2024-07-03 · CVE-2024-25389

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Name of the Vulnerable Software and Affected Versions RT-Thread versions through 5.0.2

Description The issue is related to a weak random number generation algorithm used in RT-Thread. The algorithm, defined as seed = 214013L * seed + 2531011L; return (seed >> 16) & 0x7FFF;, is implemented in the calc random function within the drivers/misc/rt random.c file. This weakness can potentially lead to predictable random numbers.

Recommendations For RT-Thread versions through 5.0.2, consider modifying the calc random function to utilize a more secure random number generation algorithm until a patch is available. As a temporary workaround, restrict the use of the calc random function to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Weakness Enumeration

CWE-338

Related Identifiers

CVE-2024-25389

Affected Products

Rt-Thread

References · 10

• https://nvd.nist.gov/vuln/detail/CVE-2024-25389 · Security Note
• https://osv.dev/vulnerability/CVE-2024-25389 · Vendor Advisory
• https://github.com/RT-Thread/rt-thread/issues/8283 · Note
• https://github.com/hnsecurity/vulns/blob/main/HNS-2024-05-rt-thread.txt · Note
• https://twitter.com/CVEnew/status/1772825843703955924 · Twitter Post
• http://seclists.org/fulldisclosure/2024/Mar/28 · Note
• https://security.humanativaspa.it/multiple-vulnerabilities-in-rt-thread-rtos · Note
• https://seclists.org/fulldisclosure/2024/Mar/28 · Note
• http://openwall.com/lists/oss-security/2024/03/05/1 · Note
• https://twitter.com/VulmonFeeds/status/1765023665098280990 · Twitter Post