CVE-2008-1637
EPSS 0.03%pdns-recursor - predictable randomness
Published: 4/2/2008Modified: 4/28/2026
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.
Affected packages (3)
- Debian/pdns-recursorfrom 0, < 3.1.7-1
- Debian/pdns-recursorfrom 0, < 3.1.4-1+etch1
- Debian/pdns-recursorfrom 0, < 3.1.4-1+etch2