HOMEVULNERABILITIESCVE-2008-1147
MEDIUM

CVE-2008-1147

NVD-CWE-OtherPublished: March 4, 2008· Updated: Jun 16, 2026

6.8
CVSS v3.1

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.

NVD Source

Technical Analysis

CVE-2008-1147 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityM
Privileges Req.
User Interaction
Scope
Impact
ConfidentialityP
IntegrityP
AvailabilityP
AV:N/AC:M/Au:N/C:P/I:P/A:P

Affected Vendors & Products

Apple2 product(s)
mac os xmac os x server
cosmicperl1 product(s)
directory pro
darwin1 product(s)
darwin
dragonflybsd1 product(s)
dragonflybsd
freebsd1 product(s)
freebsd
navision1 product(s)
financials server
netbsd1 product(s)
netbsd
openbsd1 product(s)
openbsd
Source: NVD CPE · 152 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttp://secunia.com/advisories/28819
ADVISORYhttp://secunia.com/advisories/28819

All References (20)

→
http://seclists.org/bugtraq/2008/Feb/0052.html
→
http://seclists.org/bugtraq/2008/Feb/0063.html
→
http://secunia.com/advisories/28819Vendor Advisory
→
http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/netinet/ip_id.c?rev=1.10%3Bcontenttype=
→
http://www.securiteam.com/securityreviews/5PP0H0UNGW.html
→
http://www.securityfocus.com/archive/1/487658
→
http://www.securityfocus.com/bid/27647
→
http://www.trusteer.com/docs/OpenBSD_DNS_Cache_Poisoning_and_Multiple_OS_Predictable_IP_ID_Vulnerability.pdf
→
https://exchange.xforce.ibmcloud.com/vulnerabilities/40329
→
https://exchange.xforce.ibmcloud.com/vulnerabilities/41155
→
http://seclists.org/bugtraq/2008/Feb/0052.html
→
http://seclists.org/bugtraq/2008/Feb/0063.html
→
http://secunia.com/advisories/28819Vendor Advisory
→
http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/netinet/ip_id.c?rev=1.10%3Bcontenttype=
→
http://www.securiteam.com/securityreviews/5PP0H0UNGW.html

Quick Facts

CVE IDCVE-2008-1147
CVSS Score6.8 / 10
SeverityMEDIUM
WeaknessNVD-CWE-Other
CISA KEVNo
Affected8 vendor(s)
PublishedMar 4, 2008

Related CVEs (NVD-CWE-Other)

CVE-2002-0436
10.0
CVE-2001-1196
10.0
CVE-2022-4390
10.0
CVE-1999-0789
10.0
CVE-1999-1479
10.0
CVE-2004-1770
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2008-1147 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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