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GHSA-57m8-f3v5-hm5m

Withdrawn on 2023-11-01. GitHub withdrew this advisory; it no longer applies.

Withdrawn Advisory: Netty-handler does not validate host names by default

Source: GitHub Advisory Database (reviewed) Moderate CVE-2023-4586

Packages

EcosystemPackageAffectedFixed in
Maven io.netty:netty-handler >= 4.1.0.Final, <= 4.1.99.Final no fix listed

Details

As written in the advisory (Markdown source, shown as plain text).

## Withdrawn Advisory This advisory has been withdrawn because the underlying vulnerability only concerns Red Hat's Hot Rod client, which is not in one of the GitHub Advisory Database's [supported ecosystems](https://github.com/github/advisory-database/blob/main/README.md#supported-ecosystems). This link is maintained to preserve external references. ## Original Description Netty-handler has been found to no validate hostnames when using TLS in its default configuration. As a result netty-handler is vulnerable to man-in-the-middle attacks. Users would need to set the protocol to "HTTPS" in the SSLParameters of the SSLEngine to opt in to host name validation. A change in default behavior is expected in the `5.x` release branch with no backport planned. In the interim users are advised to enable host name validation in their configurations. See https://github.com/netty/netty/issues/8537 for details on the forthcoming change in default behavior.

References

External links from the advisory. They lead to third-party sites.