DEBIAN-CVE-2021-22212

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Source
https://security-tracker.debian.org/tracker/CVE-2021-22212
Import Source
https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2021-22212.json
JSON Data
https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2021-22212
Upstream
Published
2021-06-08T13:15:07Z
Modified
2025-09-19T06:13:33Z
Summary
[none]
Details

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.

References

Affected packages

Debian:11 / ntpsec

Package

Name
ntpsec
Purl
pkg:deb/debian/ntpsec?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.2.0+dfsg1-4

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:12 / ntpsec

Package

Name
ntpsec
Purl
pkg:deb/debian/ntpsec?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.2.0+dfsg1-4

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13 / ntpsec

Package

Name
ntpsec
Purl
pkg:deb/debian/ntpsec?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.2.0+dfsg1-4

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:14 / ntpsec

Package

Name
ntpsec
Purl
pkg:deb/debian/ntpsec?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.2.0+dfsg1-4

Ecosystem specific 

{
    "urgency": "not yet assigned"
}