CVE-2008-1147

MediumCVSS 6.8/10Last modified Jun 16, 2026

Description

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.

Metrics

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

Affected software

No affected versions have been published.

Timeline

Published: Mar 4, 2008
Last modified: Jun 16, 2026
NVD status: Modified

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