Cisco IDS/IPS Web interface SSL denial of service

cisco-ips-ssl-dos (29056) The risk level is classified as MediumMedium Risk

Description:

Multiple versions of Cisco Intrusion Prevention System (IPS) are vulnerable to a denial of service in the Web management interface. A remote attacker could send a specially-crafted SSLv2 Hello packet to an affected Web interface to cause the mainAPP process to crash, which would result in a denial of service against the management interface.

*CVSS:

Base Score: 3.5
  Access Vector: Remote
  Access Complexity: Low
  Authentication: Not Required
  Confidentiality Impact: None
  Integrity Impact: None
  Availability Impact: Partial
 
Temporal Score: 2.6
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Denial of Service

Remedy:

Refer to cisco-sa-20060920-ips for upgrade or workaround information. See References.

References:

  • cisco-sa-20060920-ips: Cisco Security Advisory: Cisco Intrusion Prevention System Management Interface Denial of Service and Fragmented Packet Evasion Vulnerabilities.
  • BID-20124: Cisco IPS/IDS Web Administration Interface Denial Of Service Vulnerability
  • CVE-2006-4910: The web administration interface (mainApp) to Cisco IDS before 4.1(5c), and IPS 5.0 before 5.0(6p1) and 5.1 before 5.1(2) allows remote attackers to cause a denial of service (unresponsive device) via a crafted SSLv2 Client Hello packet.
  • OSVDB ID: 29037: Cisco IPS/IDS Web Administration Malformed SSLv2 Client Hello DoS
  • SA22046: Cisco Intrusion Detection / Prevention System "SSL Hello" Denial of Service
  • SECTRACK ID: 1016891: Cisco Intrusion Prevention System Lets Remote Users Deny Service or Evade Detection
  • US-CERT VU#642076: Cisco Intrusion Prevention System administration interface fails to properly handle Secure Socket Layer packets

Platforms Affected:

  • Cisco IDS 4.1(5B)
  • Cisco Intrusion Prevention System 5.0(6)P1
  • Cisco Intrusion Prevention System 5.1(1)

Reported:

Sep 20, 2006

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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

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