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Vulnerability · Published Mar 30, 2023 · Assigned by talos

CVE-2023-25076

Critical 9.8

In plain English

A critical-severity buffer overflow in SNIProxy from SNIProxy. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 65.8% (higher than 99.3% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)65.8%top 0.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official description

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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12sniproxy0.6.0-2.1DEBIAN-CVE-2023-25076
Debian:13sniproxy0.6.0-2.1DEBIAN-CVE-2023-25076
Debian:14sniproxy0.6.0-2.1DEBIAN-CVE-2023-25076
Ubuntu:22.04:LTSsniproxy0.6.0-2ubuntu0.22.04.1USN-6148-1
Ubuntu:22.04:LTSsniproxy0.6.0-2ubuntu0.22.04.1UBUNTU-CVE-2023-25076
Ubuntu:24.04:LTSsniproxy0.6.0-2.1build2UBUNTU-CVE-2023-25076

Affected products (as reported)

VendorProductVersions
SNIProxy SNIProxy 0.6.0-2Master 822bb80df9b7b345cc9eba55df74a07b498819ba

Weakness: CWE-120 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References