System and method for network vulnerability detection and reporting

• US 7,243,148 B2
• Filed: 03/10/2003
• Issued: 07/10/2007
• Est. Priority Date: 01/15/2002
• Status: Active Grant

• Current Assignee: McAfee, LLC
• Original Assignee: McAfee, Inc. (McAfee, LLC)
• Inventors: Ecker, Stephen A., Keir, Robin M.
• Primary Examiner(s): Salad; Abdullahi
• Application Number:
  US10/387,223
• Publication Number:
  US 20040078384A1
• Time in Patent Office: 1,583 Days
• Field of Search: 709/224, 709/225, 726/3, 726/25, 726/23, 714/4, 714 47- 48
• US Class Current: 709/224
• CPC Class Codes: G02B 2006/12097 Ridge, rib or the like
• CPC Class Codes: G02B 2006/12116 Polariser; Birefringent
• CPC Class Codes: G02B 5/3083 Birefringent or phase retarding elements G02B5/3008, G02B5/3016 take precedence; systems for polarisation control G02B27/286; manufacturing phase modulating patterns by lithographic processes G03F7/001
• CPC Class Codes: G02B 6/105 having optical polarisation effects
• CPC Class Codes: G02B 6/12011 characterised by the arrayed waveguides, e.g. comprising a filled groove in the array section
• CPC Class Codes: G02B 6/12023 characterised by means for reducing the polarisation dependence, e.g. reduced birefringence
• CPC Class Codes: H04L 41/12 Discovery or management of network topologies
• CPC Class Codes: H04L 41/22 comprising specially adapted graphical user interfaces [GUI]
• CPC Class Codes: H04L 63/0218 Distributed architectures, e.g. distributed firewalls
• CPC Class Codes: H04L 63/1408 by monitoring network traffic monitoring network traffic per se H04L43/00
• CPC Class Codes: H04L 63/1433 Vulnerability analysis
• CPC Class Codes: H04L 63/145 the attack involving the propagation of malware through the network, e.g. viruses, trojans or worms

Abstract

A system and method provide comprehensive and highly automated testing of vulnerabilities to intrusion on a target network, including identification of operating system, identification of target network topology and target computers, identification of open target ports, assessment of vulnerabilities on target ports, active assessment of vulnerabilities based on information acquired from target computers, quantitative assessment of target network security and vulnerability, and hierarchical graphical representation of the target network, target computers, and vulnerabilities in a test report. The system and method employ minimally obtrusive techniques to avoid interference with or damage to the target network during or after testing.

Claims

1. A method of conducting an automated vulnerability assessment on a computer network, comprising:

sending a plurality of IP addresses to a network scanning process;

assigning a first group of IP addresses from the plurality of IP addresses to a first subscanning process and assigning a second group of IP addresses from the plurality of IP addresses to a second subscanning process, the first subceanning process scanning the computer network with a first selected sequence of IP addresses from the first group of IP addresses and receiving and storing a first set of responses from the computer network, the second subscanning process scanning the computer network with a second selected sequence of IP addresses from the second group of IP addresses and receiving and storing a second set of responses from the computer network, the first selected sequence of IP addresses and the second selected sequence of IP addresses being applied in parallel; and

providing the first set of responses and the second set of responses as data for performing a vulnerability assessment of the computer network;

wherein;

the first group of IP addresses applied by the first subscanning process are distributed among at least a first batch of IP addresses and a second batch of IP addresses;

the first batch of IP addresses comprises a first non-ordered sequence of a first portion of the first group of IP addresses and the second batch of IP addresses comprises a second non-ordered sequence of a second portion of the first group of IP addresses;

the second group of IP addresses applied by the second subscanning process are distributed among at least a third batch of IP addresses and a fourth batch of IP addresses; and

the third batch IP addresses comprises a third non-ordered sequence of a first portion of the second group of IP addresses and the fourth batch of IP addresses comprises a fourth non-ordered sequence of a second portion of the second group IP addresses.

2. The method as defined in claim 1, wherein:

the first non-ordered sequence and the second non-ordered sequence are generated by applying a deterministic shuffling process to the first group of IP addresses; and

the third non-ordered sequence and the fourth non-ordered sequence are generated by applying a deterministic shuffling process to the second group of IP addresses.

3. The method as defined in claim 1, wherein an IP address shuffler performs a deterministic shuffling process on a group of IP addresses.

4. The method as defined in claim 3, wherein the deterministic shuffling process uses a prime number to determine an order of IP addresses in a shuffled IP address array.

5. The method as defined in claim 1, wherein the network scanning process divides an initial range of IP addresses into a plurality of subranges of IP addresses.

6. The method as defined in claim 5, wherein each of the subranges of IP addresses include contiguous IP addresses.

7. The method as defined in claim 1, wherein each subscanning process reports subscanning results to the network scanning process.

8. A computer program product embodied on a tangible computer readable medium for conducting an automated vulnerability assessment on a computer network, comprising:

computer code for sending a plurality of IP addresses to a network scanning process;

computer code for assigning a first group of IP addresses from the plurality of IP addresses to a first subscanning process and assigning a second group of IP addresses from the plurality of IP addresses to a second subscanning process, the first subscanning process scanning the computer network with a first selected sequence of IP addresses from the first group of IP addresses and receiving and storing a first set of responses from the computer network, the second subscanning process scanning the computer network wit a second selected sequence of IP addresses from the second group of IP addresses and receiving and storing a second set of responses from the computer network, the first selected sequence of IP addresses and the second selected sequence of IP addresses being applied in parallel; and

computer code for providing the first set of responses and the second set of responses as data for performing a vulnerability assessment of the computer network;

wherein;

the first group of IP addresses applied by the first subscanning process are distributed among at least a first batch of IP addresses and a second batch of IP addresses;

the first batch of IP addresses comprises a first non-ordered sequence of a first portion of the first group of IP addresses and the second batch of IP addresses comprises a second non-ordered sequence of a second portion of the first group of IP addresses;

the second group of IP addresses applied by the second subscanning process are distributed among at least a third batch of IP addresses and a fourth batch of IP addresses; and

the third batch of IP addresses comprises a third non-ordered sequence of a first portion of the second group of IP addresses and the fourth batch of IP addresses comprises a fourth non-ordered sequence of a second portion of the second group of IP addresses.

9. The computer program product as defined in claim 8, wherein:

the first non-ordered sequence and the second non-ordered sequence are generated by applying a deterministic shuffling process to the first group of IP addresses; and

the third non-ordered sequence and the fourth non-ordered sequence are generated by applying a deterministic shuffling process to the second group of IP addresses.

10. The computer program product as defined in claim 8, wherein an IP address shuffler performs a deterministic shuffling process on a group of IP addresses.

11. The computer program product as defined in claim 10, wherein the deterministic shuffling process uses a prime number to determine an order of IP addresses in a shuffled IP address array.

12. The computer program product as defined in claim 8, wherein the network scanning process divides an initial range of IP addresses into a plurality of subranges of IP addresses.

13. The computer program product as defined in claim 12, wherein each of the subranges of IP addresses include contiguous IP addresses.

14. The computer program product as defined in claim 8, wherein each subscanning process reports subscanning results to the network scanning process.

15. Apparatus for conducting an automated vulnerability assessment on a computer network, comprising:

means for sending a plurality of IP addresses to a network scanning process;

means for assigning a first group of IP addresses from the plurality of IP addresses to a first subscanning process and assigning a second group of IP addresses from the plurality of IP addresses to a second subcanning process, the first subscanning process scanning the computer network with a first selected sequence of IP addresses from the first group of IP addresses and receiving and storing a first set of responses from the computer network, the second subscanning process scanning the computer network with a second selected sequence of IP addresses from the second group of IP addresses and receiving and storing a second set of responses from the computer network, the first selected sequence of IP addresses and the second selected sequence of IP addresses being applied in parallel; and

means for providing the first set of responses and the second set of responses as data for performing a vulnerability assessment of the computer network;

wherein;

the first group of IP addresses applied by the first subscanning process are distributed among at least a first batch of IP addresses and a second batch of IP addresses;

the first batch of IP addresses comprises a first non-ordered sequence of a first portion of the first group of IP addresses and the second batch of IP addresses comprises a second non-ordered sequence of a second portion of the first group of IP addresses;

the second group of IP addresses applied by the second subscanning process are distributed among at least a third batch of IP addresses and a fourth batch of IP addresses; and

the third batch of IP addresses comprises a third non-ordered sequence of a first portion of the second group of IP addresses and the fourth batch of IP addresses comprises a fourth non-ordered sequence of a second portion of the second group of IP addresses.

16. Apparatus as defined in claim 15, wherein:

the first non-ordered sequence and the second non-ordered sequence are generated by applying a deterministic shuffling process to the first group of IP addresses; and

the third non-ordered sequence and the fourth non-ordered sequence are generated by applying a deterministic shuffling process to the second group of IP addresses.

17. Apparatus as defined in claim 15, wherein an IP address shuffler performs a deterministic shuffling process on a group of IP addresses.

18. Apparatus as defined in claim 17, wherein the deterministic shuffling process uses a prime number to determine an order of IP addresses in a shuffled IP address array.

19. Apparatus as defined in claim 15, wherein the network scanning process divides an initial range of IP addresses into a plurality of subranges of IP addresses.

20. Apparatus as defined in claim 19, wherein each of the subranges of IP addresses include continguous IP addresses.