Invalid Slice Split Results in Server Panic
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-120 and the CVSS impact.
Summary
A vulnerability was discovered in the odoh-rs rust crate that stems from faulty logic during the parsing of encrypted queries. This issue specifically occurs when processing encrypted query data received from remote clients and enables an attacker with knowledge of this vulnerability to craft and send specially designed encrypted queries to targeted ODOH servers running with odoh-rs. Upon successful exploitation, the server will crash abruptly, disrupting its normal operation and rendering the service temporarily unavailable.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
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 |
|---|---|---|---|---|---|
| Cloudflare | odoh-rs | before 1.0.2 | 1.0.2 | Patch available | CNA |
| — | odoh-rs (crates.io) | before 1.0.2 | 1.0.2 | Patch available | GHSA-gpcv-p28p-fv2p |
- odoh-rs VendorCloudflare Affected before 1.0.2 Fixed in 1.0.2 Patch available CNA
- odoh-rs (crates.io) Vendor— Affected before 1.0.2 Fixed in 1.0.2 Patch available GHSA-gpcv-p28p-fv2p
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:cloudflare:odoh-rs:*:*:*:*:*:rust:*:* | before 1.0.2 | Vulnerable | Cloudflare |
- cpe:2.3:a:cloudflare:odoh-rs:*:*:*:*:*:rust:*:* Versions before 1.0.2 Vulnerable ·Cloudflare
Remediation
- Fix · CNA odoh-rs (Cloudflare) Fixed in 1.0.2
- Fix · GHSA-gpcv-p28p-fv2p odoh-rs (crates.io) Fixed in 1.0.2 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2023-3766
- 2026-10-03 Alias added: GHSA-gpcv-p28p-fv2p
References
Advisory 2
Sources
- CVE-2023-3766 · CVE Program
- CVE-2023-3766 · NVD
- FIRST EPSS
- GHSA-gpcv-p28p-fv2p · GitHub Advisory Database · CC BY 4.0
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