DNS Cache Poisoning Vulnerability in PowerDNS Recursor by PowerDNS
CVE-2008-1637
Currently unrated
What is CVE-2008-1637?
The PowerDNS Recursor prior to version 3.1.5 is susceptible to a security vulnerability caused by insufficient randomness in the generation of TRXID values and UDP source port numbers. This weakness can be exploited by remote attackers to effectively poison the DNS cache. Contributing factors include algorithmic deficiencies in randomness functions, reliance on a static 32-bit seed value, and the use of the current time as the sole source of entropy, leading to predictable patterns that can be manipulated.
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