Cloud Vulnerability DB
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Vulnerability DatabaseCVE-2025-40913
CVE-2025-40913:
CBL Mariner vulnerability analysis and mitigation
Overview
Net::Dropbear versions through 0.16 for Perl contains a dependency vulnerability related to an integer overflow. The software embeds a version of the libtommath library that is susceptible to an integer overflow associated with CVE-2023-36328. This vulnerability was disclosed on July 16, 2025 (NVD).
Technical details
The vulnerability has been assigned a CVSS v3.1 base score of 6.5 (MEDIUM) with vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N. The issue stems from insufficient validation of user-supplied input in the mp_grow function within the embedded libtommath library (GitHub Advisory).
Impact
The vulnerability could allow attackers to execute arbitrary code and potentially cause a denial of service (DoS) condition through the integer overflow in the affected libtommath library component (GitHub Advisory).
Mitigation and workarounds
Users should upgrade to a version of Net::Dropbear that contains the patched version of libtommath. The underlying libtommath vulnerability was fixed in commit beba892bc0d4e4ded4d667ab1d2a94f4d75109a9 (GitHub PR).
Additional resources
Source: This report was generated using AI
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