DEBIAN-CVE-2009-0021

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Source
https://security-tracker.debian.org/tracker/CVE-2009-0021
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2009-0021.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2009-0021
Upstream
Downstream
Published
2009-01-07T17:30:00Z
Modified
2026-08-31T06:47:35Z
Summary
[none]
Details

NTP 4.2.4 before 4.2.4p5 and 4.2.5 before 4.2.5p150 does not properly check the return value from the OpenSSL EVP_VerifyFinal function, which allows remote attackers to bypass validation of the certificate chain via a malformed SSL/TLS signature for DSA and ECDSA keys, a similar vulnerability to CVE-2008-5077.

References

Affected packages

Debian:11 / ntp

Package

Name
ntp
Purl
pkg:deb/debian/ntp?arch=source&distro=bullseye

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1:4.2.4p4+dfsg-8

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2009-0021.json"