A buffer overflow vulnerability exists in the handling of wildcard backend hosts of SNIProxy 0.6.0-2 and the master branch (commit: 822bb80df9b7b345cc9eba55df74a07b498819ba). A specially crafted HTTP or TLS packet can lead to arbitrary code execution. An attacker could send a malicious packet to trigger this vulnerability.
https://www.debian.org/security/2023/dsa-5413
https://talosintelligence.com/vulnerability_reports/TALOS-2023-1731
https://lists.debian.org/debian-lts-announce/2023/04/msg00030.html
https://github.com/dlundquist/sniproxy/commit/f8d9a433fe22ab2fa15c00179048ab02ae23d583