Avant Browser JavaScript Engine denial of service

avantbrowser-javascript-dos (45121) The risk level is classified as MediumMedium Risk

Description:

Avant Browser is vulnerable to a denial of service, caused by an integer overflow error in the JavaScript Engine when handling an overly long string. By persuading a victim to visit a specially-crafted Web site, a remote attacker could exploit this vulnerability to cause the application to crash.

*CVSS:

Base Score: 5
  Access Vector: Network
  Access Complexity: Low
  Authentication: None
  Confidentiality Impact: None
  Integrity Impact: None
  Availability Impact: Partial
 
Temporal Score: 4
  Exploitability: Unproven
  Remediation Level: Unavailable
  Report Confidence: Uncorroborated

Consequences:

Denial of Service

Remedy:

No remedy available as of September 1, 2014.

References:

  • Avant Browser Web site: Avant Browser.
  • BugTraq Mailing List, Fri Sep 12 2008 - 10:21:44 CDT: Avant Browser <= 11.7 Build 9 Integer Denial Of Service Exploit.
  • BID-31155: Avant Browser JavaScript Engine Integer Overflow Vulnerability
  • CVE-2008-4166: Integer overflow in the JavaScript engine in Avant Browser 11.7 Build 9 and earlier allows remote attackers to cause a denial of service (application crash) by attempting to URL encode a string containing many instances of an invalid character.
  • OSVDB ID: 48506: Avant Browser Javascript Engine Encoded URL String Handling Remote Overflow DoS

Platforms Affected:

  • Avant Browser Avant Browser 11.7 build 9

Reported:

Sep 12, 2008

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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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