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Sid 1-41807

Message

POLICY-OTHER SSLv3 Client Hello attempt

Summary

The design of the Internet Key Exchange (IKE) protocol, when using Aggressive Mode for shared secret authentication, does not encrypt initiator or responder identities during negotiation, which may allow remote attackers to determine valid usernames by (1) monitoring responses before the password is supplied or (2) sniffing, as originally reported for FireWall-1 SecuRemote.

Impact

CVSS base score 5.0 CVSS impact score 2.9 CVSS exploitability score 10.0 confidentialityImpact PARTIAL integrityImpact NONE availabilityImpact NONE

CVE-2002-1623:

CVSS base score 5.0

CVSS impact score 2.9

CVSS exploitability score 10.0

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

CVE-2013-2566:

CVSS base score 5.9

CVSS impact score 3.6

CVSS exploitability score 2.2

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Detailed information

CVE-2002-1623: The design of the Internet Key Exchange (IKE) protocol, when using Aggressive Mode for shared secret authentication, does not encrypt initiator or responder identities during negotiation, which may allow remote attackers to determine valid usernames by (1) monitoring responses before the password is supplied or (2) sniffing, as originally reported for FireWall-1 SecuRemote.

CVE-2013-2566: The RC4 algorithm, as used in the TLS protocol and SSL protocol, has many single-byte biases, which makes it easier for remote attackers to conduct plaintext-recovery attacks via statistical analysis of ciphertext in a large number of sessions that use the same plaintext.

Affected systems

  • checkpoint vpn-1_firewall-1 4.0
  • checkpoint vpn-1_firewall-1 4.1
  • apple safari *
  • google chrome -
  • ibm websphereapplicationserver *
  • jboss jbossenterpriseapplication_server *
  • microsoft ie *
  • microsoft iis *
  • mozilla firefox *
  • opera opera_browser -
  • oracle glassfish *
  • oracle sparc-oplserviceprocessor 1121
  • sun glassfishenterpriseserver *

Ease of attack

CVE-2002-1623:

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

CVE-2013-2566:

Access Vector

Access Complexity

Authentication

False positives

None known

False negatives

None known

Corrective action

Upgrade to the latest non-affected version of the software.

Apply the appropriate vendor supplied patches.

Contributors

  • Talos research team.
  • This document was generated from data supplied by the national vulnerability database, a product of the national institute of standards and technology.
  • For more information see nvd.

Additional References