CVE-2008-1637

MediumCVSS 6.8/10Last modified Jun 16, 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.

Metrics

CVSS 2.0 6.8/10AV:N/AC:M/Au:N/C:P/I:P/A:P

Weakness enumeration

CWE-189

Affected software

VendorProductVersions
n/an/an/a

References

Timeline

Published
Apr 2, 2008
Last modified
Jun 16, 2026
NVD status
Modified

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CVE-2008-1637: Medium severity, CVSS 6.8 | Vulnix