SB2023102737 - NULL pointer dereference in quic-go

Description

This security bulletin contains information about 1 vulnerability.

1) NULL pointer dereference (CVE-ID: CVE-2023-46239)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to a nil pointer dereference in the handshake packet number space handling when completing the handshake with an unexpected frame serialization order. A remote attacker can send packets that serialize an ACK frame after the CRYPTO frame that completes the handshake to cause a denial of service.

Completing the QUIC handshake only requires sending and receiving a few packets.

Remediation

Install update from vendor's website.

References

• https://github.com/quic-go/quic-go/security/advisories/GHSA-3q6m-v84f-6p9h
• https://github.com/advisories/GHSA-3q6m-v84f-6p9h