Vulnerability Details : CVE-2023-3766
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.
Vulnerability category: Overflow
Products affected by CVE-2023-3766
- cpe:2.3:a:cloudflare:odoh-rs:*:*:*:*:*:rust:*:*
Exploit prediction scoring system (EPSS) score for CVE-2023-3766
0.07%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 31 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2023-3766
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.9
|
MEDIUM | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
2.2
|
3.6
|
Cloudflare, Inc. | |
|
5.9
|
MEDIUM | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
2.2
|
3.6
|
NIST |
CWE ids for CVE-2023-3766
-
The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow.Assigned by:
- cna@cloudflare.com (Secondary)
- nvd@nist.gov (Primary)
References for CVE-2023-3766
-
https://github.com/cloudflare/odoh-rs/security/advisories/GHSA-gpcv-p28p-fv2p
Invalid Slice Split Results in Server Panic · Advisory · cloudflare/odoh-rs · GitHubVendor Advisory
-
https://github.com/cloudflare/odoh-rs/pull/28
Fix a panic triggered by malformed encrypted message by cjpatton · Pull Request #28 · cloudflare/odoh-rs · GitHubPatch;Vendor Advisory
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