Published: 19/12/2000 Updated: 05/09/2008

CVSS v2 Base Score: 7.5 | Impact Score: 6.4 | Exploitability Score: 10

VMScore: 755

Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

FreeBSD 4.1.1 and previous versions, and possibly other BSD-based OSes, uses an insufficient random number generator to generate initial TCP sequence numbers (ISN), which allows remote malicious users to spoof TCP connections.

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freebsd freebsd 2.0
freebsd freebsd 4.0
freebsd freebsd 4.1
freebsd freebsd 4.1.1
freebsd freebsd 3.0

source: wwwsecurityfocuscom/bid/670/info A vulnerability in the Linux kernel allows remote users to guess the initial sequence number of TCP sessions This can be used to create spoofed TCP sessions bypassing some types of IP based access controls The function 'secure_tcp_sequence_number' in the file 'drivers/char/randomc' at line 1684 ...

NVD-CWE-Other http://www.securityfocus.com/bid/1766 ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-00:52.tcp-iss.asc https://nvd.nist.gov https://www.exploit-db.com/exploits/19522/

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CVE-2000-0916

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