CVE-2023-46239: quic-go vulnerable to pointer dereference that can lead to panic
First published: Mon Oct 30 2023(Updated: )
quic-go is an implementation of the [QUIC](https://datatracker.ietf.org/doc/html/rfc9000) transport protocol in Go. By serializing an ACK frame after the CRYTPO that allows a node to complete the handshake, a remote node could trigger a nil pointer dereference (leading to a panic) when the node attempted to drop the Handshake packet number space. **Impact** An attacker can bring down a quic-go node with very minimal effort. Completing the QUIC handshake only requires sending and receiving a few packets. **Patches** [v0.37.3](https://github.com/quic-go/quic-go/releases/tag/v0.37.3) contains a patch. Versions before v0.37.0 are not affected.
Credit: security-advisories@github.com security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| go/github.com/quic-go/quic-go | >=0.37.0<0.37.3 | 0.37.3 |
| quic-go | >=0.37.0<0.37.3 |
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Reference Links
- https://github.com/quic-go/quic-go/commit/b6a4725b60f1fe04e8f1ddcc3114e290fcea1617
- https://github.com/quic-go/quic-go/releases/tag/v0.37.3
- https://github.com/quic-go/quic-go/security/advisories/GHSA-3q6m-v84f-6p9h
- https://nvd.nist.gov/vuln/detail/CVE-2023-46239
- https://github.com/advisories/GHSA-3q6m-v84f-6p9h (Advisory)
Frequently Asked Questions
What is CVE-2023-46239?
CVE-2023-46239 is a vulnerability in the quic-go implementation of the QUIC transport protocol in Go that allows a remote node to trigger a nil pointer dereference, leading to a panic, by serializing an ACK frame after the CRYTPO stage in the handshake.
Which software is affected by CVE-2023-46239?
The quic-go package version 0.37.0 up to version 0.37.3 is affected by CVE-2023-46239.
What is the severity of CVE-2023-46239?
The severity of CVE-2023-46239 is not specified.
How do I fix CVE-2023-46239?
To fix CVE-2023-46239, update to quic-go version 0.37.3 or later.
Where can I find more information about CVE-2023-46239?
You can find more information about CVE-2023-46239 on the GitHub security advisory page at https://github.com/quic-go/quic-go/security/advisories/GHSA-3q6m-v84f-6p9h.
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