CVE-20XX-?
agent?

CVE-2021-22212

4.0 MEDIUM 0.5% exploit odds Fix listed

What it is

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.

At a glance

Exploitability
Can be exploited locally on the machine with an admin-level account, but needs a user to act. High risk of data tampering.
Exploit odds
0.5% chance of exploitation in the next 30 days (EPSS).
Fix
A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

  1. PublishedDisclosed publicly on CVE.org and NVD
  2. Last updatedMost recent change to the record

Why it ranks here

Details

Published
Last modified
Exploit probability
0.5% · EPSS, next 30 days
Weakness
CWE-327 · Broken cryptographic algorithm
Record status
Modified

Affected

Attack profile CVSS 3.1 · 4.0

Attack vector
Local
Complexity
High
Privileges needed
High
User interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None
Raw vector

CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:N

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2021-22212.md and follow it. Check whether this project is affected by CVE-2021-22212. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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Fix and advisories

References

NVD record · CVE.org record