CVE-2008-1147: Cosmicperl Directory Pro

Medium severity, CVSS 6.8. EPSS: 1.8% chance of exploitation in the next 30 days.

A certain pseudo-random number generator (PRNG) algorithm that uses XOR and 2-bit random hops (aka "Algorithm X2"), as used in OpenBSD 2.6 through 3.4, Mac OS X 10 through 10.5.1, FreeBSD 4.4 through 7.0, and DragonFlyBSD 1.0 through 1.10.1, allows remote attackers to guess sensitive values such as IP fragmentation IDs by observing a sequence of previously generated values. NOTE: this issue can be leveraged for attacks such as injection into TCP packets and OS fingerprinting.

Affected products

• Cosmicperl Directory Pro: version 10.0.3 only
• Darwin Darwin: version 1.0 only; version 9.1 only
• Navision Financials Server: version 3.0 only

Published 2008-03-04. Last modified 2026-06-16.