CVE-2024-41909: mina sshd — Fix

Description

Like many other SSH implementations, Apache MINA SSHD suffered from the issue that is more widely known as CVE-2023-48795. An attacker that can intercept traffic between client and server could drop certain packets from the stream, potentially causing client and server to consequently end up with a connection for which some security features have been downgraded or disabled, aka a Terrapin attack The mitigations to prevent this type of attack were implemented in Apache MINA SSHD 2.12.0, both client and server side. Users are recommended to upgrade to at least this version. Note that both the client and the server implementation must have mitigations applied against this issue, otherwise the connection may still be affected.

Is your site exposed to CVE-2024-41909?

Run a free security scan — no signup, results in seconds.

CVSS v3.1 Score

5.9

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Weakness Type (CWE)

CWE-354 CWE-354

Affected Products

Vendor	Product	Versions
apache	mina_sshd	< 2.11.0

References

Advisories & Patches

https://lists.apache.org/thread/vwf1ot8wx1njyy8n19j5j2tcnjnozt3b

Other References

https://github.com/apache/mina-sshd/issues/445 https://security.netapp.com/advisory/ntap-20241011-0006/

Frequently Asked Questions

What is CVE-2024-41909? +

Like many other SSH implementations, Apache MINA SSHD suffered from the issue that is more widely known as CVE-2023-48795. An attacker that can intercept traffic between client and server could drop certain packets from the stream, potentially causing client and server to consequently end up with a connection for which some security features have been downgraded or disabled, aka a Terrapin attack The mitigations to prevent this type of attack were implemented in Apache MINA SSHD 2.12.0, both client and server side. Users are recommended to upgrade to at least this version. Note that both the client and the server implementation must have mitigations applied against this issue, otherwise the connection may still be affected. It has a CVSS v3.1 base score of 5.9 (MEDIUM).

How severe is CVE-2024-41909? +

CVE-2024-41909 has a CVSS v3.1 score of 5.9 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2024-41909? +

CVE-2024-41909 affects products from apache, specifically: mina_sshd. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-41909? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2026-13385

An Improper Validation of Integrity Check Value and Improper Certificate Validation in certain ASUS router models allows a remote man-in-the-middle(MITM) …

CVE-2026-59642

In Bouncy Castle for Java before 1.85, CMS AuthenticatedData content not bound to MAC when authAttrs present. This issue also …

CVE-2024-7402

Netskope has identified a potential gap in its agent (Netskope Client) in which a malicious insider can potentially tamper the …

CVE-2025-4616

An insufficient validation of an untrusted input vulnerability in Palo Alto Networks Prisma® Browser allows a locally authenticated non-admin user …

CVE-2026-9653

A denial-of-service security issue exists across all the 1756-EN2, EN3, and ENBT communication module due to improper validation of CIP …

CVE-2026-58061

In Bouncy Castle for Java before 1.85, CCM-family modes write plaintext to caller buffer before tag check. This issue also …

CVE-2024-41909