CVE-2008-1637
mediumpriority · track · 28EPSS 0.040 · 90 %ileEUUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (2)
Products and version ranges known to be affected.
also known as (2)
Other names and identifiers for this entity.
sources
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references (36)
External citations — patches, advisories, analysis.
- http://doc.powerdns.com/changelog.htmlenisa_euvd
- http://doc.powerdns.com/powerdns-advisory-2008-01.htmlenisa_euvd
- http://lists.opensuse.org/opensuse-security-announce/2008-06/msg00001.htmlenisa_euvd
- http://secunia.com/advisories/29584enisa_euvd
- http://secunia.com/advisories/29737enisa_euvd
- http://secunia.com/advisories/29764enisa_euvd
- http://secunia.com/advisories/29830enisa_euvd
- http://secunia.com/advisories/30581enisa_euvd
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