CVE-2008-1147 Weak cryptography in n/a

Medium 6.8 Published 4 Mar 2008 Updated 7 Aug 2024

Weak PRNG allows remote attackers to predict sensitive values like IP IDs, enabling TCP injection and OS fingerprinting.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2008-1147?

CVE-2008-1147 is a medium-severity vulnerability in n/a, published on 4 Mar 2008. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Which versions are affected by CVE-2008-1147?

It affects 3 products.

Products include Cosmicperl Directory Pro, Darwin Darwin, Navision Financials Server.

How do I fix CVE-2008-1147?

No fix has been published for CVE-2008-1147 yet. Limit exposure of the affected software until one is available.

Is CVE-2008-1147 being exploited?

There is no known exploitation of CVE-2008-1147 in the wild and no public exploit code.

Sources

Also known as GHSA-7489-8f63-32p6.