CVE-2009-0858
The response_addname function in response.c in Daniel J. Bernstein djbdns 1.05 and earlier does not constrain offsets in the required…
- 5.8MediumCVSS base score
- 6.3%Exploitation in 30 daysEPSS · top 6.4% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- 1Public exploitsMetasploit, Nuclei and Exploit-DB
Description
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.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list an Exploit-DB entry for it.
Show the exploits1
Exploit-DB1 entry
- djbdns 1.05 - Long Response Packet Remote Cache Poisoning (Exploit-DB entry) (opens in a new tab)
EDB-ID 32825remote, linuxpublished 27 Feb 2009Verified
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By mitre
Published
- 15 years later
· 15 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium5.8 | AV:N/AC:M/Au:N/C:N/I:P/A:P |
- EPSS (exploitation in 30 days)
- 6.3% · top 6.4% of all CVEs (10 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.8.
Affected products
n/a
- affected n/a
References
11
- 35820 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 20090228 Re: djbdns misformats some long response packets; patch and example attack (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- djbdns-response-packet-spoofing(49003) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- 20090305 Re: djbdns misformats some long response packets; patch and example attack (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- http://securityandthe.net/2009/03/05/security-issue-in-djbdns-confirmed/ (opens in a new tab)x_refsource_MISCx_transferred
- DSA-1831 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- [dns] 20090304 djbdns<=1.05 lets AXFRed subdomains overwrite domains (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- 33937 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 20090226 djbdns misformats some long response packets; patch and example attack (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- [dns] 20090225 djbdns misformats some long response packets; patch and example (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- http://it.slashdot.org/article.pl?sid=09/03/05/2014249 (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2009-0855 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2009-0858)Record last updated .