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.

The remote Ubuntu 18.04 ESM / 20.04 LTS / 22.04 LTS / 23.04 host has a package installed that is affected by a vulnerability as referenced in the USN-6148-1 advisory.

    It was discovered that SNI Proxy did not properly handle wildcard backend hosts. An attacker could     possibly use this issue to cause a buffer overflow, resulting in a denial of service, or arbitrary code     execution.

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Debian 11 host has a package installed that is affected by a vulnerability as referenced in the dsa-5413 advisory.

    An issue has been found in sniproxy, a transparent TLS and HTTP layer 4 proxy with SNI support. Due to bad     handling of wildcard backend hosts, a crafted HTTP or TLS packet might lead to remote arbitrary code     execution. For the stable distribution (bullseye), this problem has been fixed in version 0.6.0-2+deb11u1.
    We recommend that you upgrade your sniproxy packages. For the detailed security status of sniproxy please     refer to its security tracker page at: https://security-tracker.debian.org/tracker/sniproxy

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Debian 10 host has a package installed that is affected by a vulnerability as referenced in the dla-3406 advisory.

    - -------------------------------------------------------------------------     Debian LTS Advisory DLA-3406-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                    Thorsten Alteholz     April 30, 2023                                https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : sniproxy     Version        : 0.6.0-1+deb10u1     CVE ID         : CVE-2023-25076


    An issue has been found in sniproxy, a transparent TLS and HTTP layer 4     proxy with SNI support.
    Due to bad handling of wildcard backend hosts, a crafted HTTP or TLS     packet might lead to remote arbitrary code execution.



    For Debian 10 buster, this problem has been fixed in version     0.6.0-1+deb10u1.

    We recommend that you upgrade your sniproxy packages.

    For the detailed security status of sniproxy please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/sniproxy

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
177109	Ubuntu 18.04 ESM / 20.04 LTS / 22.04 LTS / 23.04 : SNI Proxy vulnerability (USN-6148-1)	Nessus	Ubuntu Local Security Checks	critical
176431	Debian DSA-5413-1 : sniproxy - security update	Nessus	Debian Local Security Checks	critical
174963	Debian dla-3406 : sniproxy - security update	Nessus	Debian Local Security Checks	critical

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