Buffer overflow in SNIProxy
Priority CRITICAL 85CWE-120Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-120 and the CVSS impact.
Summary
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.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.65753 99th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| SNIProxy | SNIProxy | 0.6.0-2; Master 822bb80df9b7b345cc9eba55df74a07b498819ba | — | No fix listed | CNA |
- SNIProxy VendorSNIProxy Affected 0.6.0-2; Master 822bb80df9b7b345cc9eba55df74a07b498819ba Fixed in — No fix listed CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:sniproxy_project:sniproxy:0.6.0-2:*:*:*:*:*:*:* | 0.6.0-2 | Vulnerable | Sniproxy Project |
| cpe:2.3:a:sniproxy_project:sniproxy:0.6.1:*:*:*:*:*:*:* | 0.6.1 | Vulnerable | Sniproxy Project |
- cpe:2.3:a:sniproxy_project:sniproxy:0.6.0-2:*:*:*:*:*:*:* Versions 0.6.0-2 Vulnerable ·Sniproxy Project
- cpe:2.3:a:sniproxy_project:sniproxy:0.6.1:*:*:*:*:*:*:* Versions 0.6.1 Vulnerable ·Sniproxy Project
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2023-25076
- 2026-10-03 Alias added: GHSA-fhgm-rvpq-xwx9
References
Sources
- CVE-2023-25076 · CVE Program
- CVE-2023-25076 · NVD
- FIRST EPSS
- GHSA-fhgm-rvpq-xwx9 · GitHub Advisory Database · CC BY 4.0
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