Vulnerability Details : CVE-2023-33192
ntpd-rs is an NTP implementation written in Rust. ntpd-rs does not validate the length of NTS cookies in received NTP packets to the server. An attacker can crash the server by sending a specially crafted NTP packet containing a cookie shorter than what the server expects. The server also crashes when it is not configured to handle NTS packets. The issue was caused by improper slice indexing. The indexing operations were replaced by safer alternatives that do not crash the ntpd-rs server process but instead properly handle the error condition. A patch was released in version 0.3.3.
Products affected by CVE-2023-33192
- cpe:2.3:a:tweedegolf:ntpd-rs:*:*:*:*:*:rust:*:*
Exploit prediction scoring system (EPSS) score for CVE-2023-33192
0.20%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 42 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2023-33192
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST | |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
GitHub, Inc. |
CWE ids for CVE-2023-33192
-
The product parses a formatted message or structure, but it does not handle or incorrectly handles a length field that is inconsistent with the actual length of the associated data.Assigned by: security-advisories@github.com (Secondary)
References for CVE-2023-33192
-
https://github.com/pendulum-project/ntpd-rs/security/advisories/GHSA-qwhm-h7v3-mrjx
Improper handling of NTS cookie length that could crash the ntpd-rs server · Advisory · pendulum-project/ntpd-rs · GitHubMitigation;Vendor Advisory
-
https://github.com/pendulum-project/ntpd-rs/pull/752
Cookie length validation by folkertdev · Pull Request #752 · pendulum-project/ntpd-rs · GitHubPatch
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