CVE-2008-1147 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....
MediumCVSS 6.8
EPSS 1.8%
- Published
- Updated
- Exploit status
- No public exploit known
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.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| cosmicperl directory pro | = 10.0.3 | No fix listed |
| darwin | = 1.0 | No fix listed |
| darwin | = 9.1 | No fix listed |
| navision financials server | = 3.0 | No fix listed |
References
- 20080206 Re: A paper by Amit Klein (Trusteer): "OpenBSD DNS Cache Poisoning and Multiple O/S Predictable IP ID Vulnerability" mailing-list
- 20080206 RE: A paper by Amit Klein (Trusteer): "OpenBSD DNS Cache Poisoning and Multiple O/S Predictable IP ID Vulnerability" mailing-list
- 28819 third-party-advisory vendor-advisory
- www.freebsd.org
- www.securiteam.com
- 20080206 A paper by Amit Klein (Trusteer): "OpenBSD DNS Cache Poisoning and Multiple O/S Predictable IP ID Vulnerability" mailing-list
- 27647 vdb-entry
- www.trusteer.com
- openbsd-prng-dns-spoofing(40329) vdb-entry
- openbsd-xor-weak-security(41155) vdb-entry