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Vulnerability record · CVE-2012-1191 · published 17 February 2012

CVE-2012-1191: D.j.bernstein djbdns improper input validation vulnerability

DD.J.Bernstein · Djbdns

The resolver in dnscache in Daniel J. Bernstein djbdns 1.05 overwrites cached server names and TTL values in NS records during the processing of a response to an A record query, which allows remote attackers to trigger continued resolvability of revoked domain names via a "ghost domain names" attack.

6.4 CVSS 2.0 Medium EPSS 1.9% · top 21.2% CWE-20 · Improper input validation
6.4CVSS 2.0 base score
1.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
16 Jun 2026Last modified by NVD

Description

The resolver in dnscache in Daniel J. Bernstein djbdns 1.05 overwrites cached server names and TTL values in NS records during the processing of a response to an A record query, which allows remote attackers to trigger continued resolvability of revoked domain names via a "ghost domain names" attack.

AV:N/AC:L/Au:N/C:N/I:P/A:P

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.isc.org/files/imce/ghostdomain_camera.pdf Exploit
https://www.isc.org/files/imce/ghostdomain_camera.pdf Exploit

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2012-1191), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.