The response_addname function in response.c in Daniel J.
Priority LOW 35CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Medium
- Impact type
- —
- Confidentiality · integrity · availability
- None · Partial · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
The response_addname function in response.c in Daniel J. Bernstein djbdns 1.05 and earlier does not constrain offsets in the required manner, which allows remote attackers, with control over a third-party subdomain served by tinydns and axfrdns, to trigger DNS responses containing arbitrary records via crafted zone data for this subdomain.
Why it matters now
EPSS 0.06278 93rd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:d.j.bernstein:djbdns:*:*:*:*:*:*:*:* | up to 1.05 | Vulnerable | D.j.bernstein |
- cpe:2.3:a:d.j.bernstein:djbdns:*:*:*:*:*:*:*:* Versions up to 1.05 Vulnerable ·D.j.bernstein
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2009-0858
- 2026-10-03 Alias added: GHSA-f296-f6r3-pgjg
References
Advisory 1
More D.j.bernstein Djbdns vulnerabilities
- TI-2012-01097 The resolver in dnscache in Daniel J. CVSS 2.0MEDIUM 6.4
- TI-2008-04189 dnscache in Daniel J. CVSS 2.0MEDIUM 6.4
Sources
- CVE-2009-0858 · CVE Program
- CVE-2009-0858 · NVD
- FIRST EPSS
- GHSA-f296-f6r3-pgjg · GitHub Advisory Database · CC BY 4.0
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