CVE-2008-1637
PowerDNS Recursor before 3.1.5 uses insufficient randomness to calculate (1) TRXID values and (2) UDP source port numbers, which makes it…
- 6.8MediumCVSS base score
- 4.0%Exploitation in 30 daysEPSS · top 9.5% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
PowerDNS Recursor before 3.1.5 uses insufficient randomness to calculate (1) TRXID values and (2) UDP source port numbers, which makes it easier for remote attackers to poison a DNS cache, related to (a) algorithmic deficiencies in rand and random functions in external libraries, (b) use of a 32-bit seed value, and (c) choice of the time of day as the sole seeding information.
Timeline
ID reserved
By mitre
Published
- 16 years later
· 16 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 | Medium6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
- EPSS (exploitation in 30 days)
- 4.0% · top 9.5% of all CVEs (9 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.8.
Affected products
n/a
- affected n/a
References
18
- 29764 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 29737 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- DSA-1544 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- FEDORA-2008-3010 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- 28517 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- http://doc.powerdns.com/changelog.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://www.trusteer.com/docs/powerdnsrecursor.html (opens in a new tab)x_refsource_MISCx_transferred
- 29584 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- SUSE-SR:2008:012 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- ADV-2008-1046 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- http://www.trusteer.com/docs/PowerDNS_recursor_DNS_Cache_Poisoning.pdf (opens in a new tab)x_refsource_MISCx_transferred
- 29830 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- http://doc.powerdns.com/powerdns-advisory-2008-01.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- powerdns-dnscache-weak-security(41534) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- GLSA-200804-22 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- FEDORA-2008-3036 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- 20080331 Paper by Amit Klein (Trusteer): "PowerDNS Recursor DNS Cache Poisoning [pharming]" (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- 30581 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_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-2008-1638 (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-2008-1637)Record last updated .