← Vulnerability feed

Vulnerability record · CVE-2008-1147 · published 4 March 2008

CVE-2008-1147: Cosmicperl directory pro vulnerability

CCosmicperl · Directory Pro

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.

6.8 CVSS 2.0 Medium EPSS 1.8% · top 22.8%
6.8CVSS 2.0 base score
1.8%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
20References
16 Jun 2026Last modified by NVD

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.

AV:N/AC:M/Au:N/C:P/I:P/A:P

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://seclists.org/bugtraq/2008/Feb/0052.html
http://seclists.org/bugtraq/2008/Feb/0063.html
http://secunia.com/advisories/28819 Vendor 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/28819 Vendor 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

Track CVE-2008-1147 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

6.9CVE-2007-1273Navision financials server vulnerabilityInteger overflow in the ktruser function in NetBSD-current before 20061022, NetBSD 3 and 3-0 before 20061024, and NetBSD 2 before 20070209, when the …EPSS 0.28%6.8CVE-2008-1146Cosmicperl directory pro vulnerabilityA certain pseudo-random number generator (PRNG) algorithm that uses XOR and 3-bit random hops (aka "Algorithm X3"), as used in OpenBSD 2.8 through 4.…EPSS 1.4%6.8CVE-2008-1148Cosmicperl directory pro vulnerabilityA certain pseudo-random number generator (PRNG) algorithm that uses ADD with 0 random hops (aka "Algorithm A0"), as used in OpenBSD 3.5 through 4.2 a…EPSS 1.4%5.0CVE-2001-0780Cosmicperl directory pro path traversal vulnerabilityDirectory traversal vulnerability in cosmicpro.cgi in Cosmicperl Directory Pro 2.0 allows remote attackers to gain sensitive information via a .. (do…EPSS 7.5%5.0CVE-2001-0392Navision financials server vulnerabilityNavision Financials Server 2.60 and earlier allows remote attackers to cause a denial of service by sending a null character and a long string to the…EPSS 1.3%5.0CVE-2001-0393Navision financials server vulnerabilityNavision Financials Server 2.0 allows remote attackers to cause a denial of service via a series of connections to the server without providing a use…EPSS 1.3%

Source: NIST National Vulnerability Database (record CVE-2008-1147), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.