Apple Safari servePendingRequests() denial of service

safari-servependingrequests-dos (51533) The risk level is classified as MediumMedium Risk

Description:

Apple Safari is vulnerable to a denial of service, caused by a use-after-free error while invoking the servePendingRequests() function in the WebKit component. By persuading a victim to visit a specially-crafted Web site, a remote attacker could exploit this vulnerability to dereference invalid memory and cause the browser to crash or possibly execute arbitrary code on the system.

*CVSS:

Base Score: 4.3
  Access Vector: Network
  Access Complexity: Medium
  Authentication: None
  Confidentiality Impact: None
  Integrity Impact: None
  Availability Impact: Partial
 
Temporal Score: 3.9
  Exploitability: High
  Remediation Level: Temporary-Fix
  Report Confidence: Confirmed

Consequences:

Denial of Service

Remedy:

Apply the patch for this vulnerability, available from the WebKit development Repository. See References.

References:

  • Apple Safari Web site: Apple - Safari.
  • Marcell Dietl Web site: Apple Safari 4.x JavaScript Reload Denial of Service.
  • WebKit development Repository: Changeset 44519.
  • BID-35555: Apple Safari 'reload()' Denial of Service Vulnerability
  • CVE-2009-2419: Use-after-free vulnerability in the servePendingRequests function in WebCore in WebKit in Apple Safari 4.0 and 4.0.1 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted HTML document that references a zero-length .js file and the JavaScript reload function. NOTE: some of these details are obtained from third party information.
  • OSVDB ID: 55587: Apple Safari WebKit servePendingRequests() Function Use-After-Free DoS
  • SA33495: Apple Safari WebKit "servePendingRequests()" Use-After-Free Weakness
  • SUSE-SR:2011:002: SUSE Security Summary Report

Platforms Affected:

  • Apple Safari 4.0
  • Apple Safari 4.0.1

Reported:

Jul 01, 2009

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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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