Vulnerability Monitor

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CVE-2003-1230

The implementation of SYN cookies (syncookies) in FreeBSD 4.5 through 5.0-RELEASE-p3 uses only 32-bit internal keys when generating syncookies, which makes it easier for remote attackers to conduct brute force ISN guessing attacks and spoof legitimate traffic.

Published

2003-12-31T05:00:00.000

Last Modified

2025-04-03T01:03:51.193

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 6.4 (MEDIUM)

CVSSv2 Vector

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

  • Access Vector: NETWORK
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: PARTIAL
  • Integrity Impact: PARTIAL
  • Availability Impact: NONE
Exploitability Score

10.0

Impact Score

4.9

Weaknesses
  • Type: Primary
    NVD-CWE-Other
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System freebsd freebsd 4.5 No
Operating System freebsd freebsd 4.6 No
Operating System freebsd freebsd 4.7 No
Operating System freebsd freebsd 4.7 No
Operating System freebsd freebsd 5.0 No
References