Upstream information

CVE-2021-22212 at MITRE

Description

ntpkeygen can generate keys that ntpd fails to parse. NTPsec 1.2.0 allows ntpkeygen to generate keys with '#' characters. ntpd then either pads, shortens the key, or fails to load these keys entirely, depending on the key type and the placement of the '#'. This results in the administrator not being able to use the keys as expected or the keys are shorter than expected and easier to brute-force, possibly resulting in MITM attacks between ntp clients and ntp servers. For short AES128 keys, ntpd generates a warning that it is padding them.

SUSE information

Overall state of this security issue: Does not affect SUSE products

This issue is currently rated as having important severity.

CVSS v2 Scores
CVSS detail National Vulnerability Database
Base Score 5.8
Vector AV:N/AC:M/Au:N/C:P/I:P/A:N
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact None
CVSS v3 Scores
CVSS detail National Vulnerability Database
Base Score 7.4
Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact None
CVSSv3 Version 3.1
SUSE Bugzilla entry: 1187088 [RESOLVED / FIXED]

No SUSE Security Announcements cross referenced.

List of released packages

Product(s) Fixed package version(s) References
openSUSE Tumbleweed
  • libntpc1 >= 1.2.1-1.2
  • ntpsec >= 1.2.1-1.2
  • ntpsec-devel >= 1.2.1-1.2
  • ntpsec-doc >= 1.2.1-1.2
  • ntpsec-utils >= 1.2.1-1.2
  • python3-ntp >= 1.2.1-1.2
 Patchnames:
openSUSE-Tumbleweed-2024-11103

SUSE Timeline for this CVE

CVE page created: Wed Jun 9 08:54:33 2021
CVE page last modified: Sat Nov 1 22:23:36 2025