CVE-2023-33192
HIGH7.5EPSS 0.49%Improper handling of NTS cookie length that could crash the ntpd-rs server
描述
### Impact 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. ntpd-rs running purely as an ntp client is not affected. ### Patches 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 ### Workarounds ntpd-rs running purely as an ntp client is not affected. By default, ntpd-rs packages are not configured to run as a server. For machines where serving the time is required, there is no known workaround. Users are recommended to upgrade ntpd-rs as soon as possible. ### References https://github.com/pendulum-project/ntpd-rs/pull/752 We would like to thank @mlichvar for identifying this issue
受影響套件(1)
- crates.io/ntpd>= 0.3.0, < 0.3.3
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
參考連結(5)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2023-33192
- PATCHhttps://github.com/pendulum-project/ntpd-rs
- WEBhttps://github.com/pendulum-project/ntpd-rs/pull/752
- WEBhttps://github.com/pendulum-project/ntpd-rs/releases/tag/v0.3.3
- WEBhttps://github.com/pendulum-project/ntpd-rs/security/advisories/GHSA-qwhm-h7v3-mrjx