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.
Advisories
Source ID Title
Debian DSA Debian DSA DSA-1544-1 New pdns-recursor packages fix cache poisoning vulnerability
Debian DSA Debian DSA DSA-1544-2 New pdns-recursor packages fix predictable randomness
EUVD EUVD EUVD-2008-1638 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.
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Wed, 28 May 2025 14:45:00 +0000

Type Values Removed Values Added
References

Thu, 22 May 2025 04:30:00 +0000


cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-07T08:32:01.076Z

Reserved: 2008-04-02T00:00:00

Link: CVE-2008-1637

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2008-04-02T17:44:00.000

Modified: 2025-04-09T00:30:58.490

Link: CVE-2008-1637

cve-icon Redhat

Severity : Moderate

Publid Date: 2008-03-31T00:00:00Z

Links: CVE-2008-1637 - Bugzilla

cve-icon OpenCVE Enrichment

No data.