Microsoft Internet Explorer and Outlook null character in host name denial of service
| ie-host-null-dos (15127) |  Medium Risk |
Description:
Microsoft Internet Explorer and Microsoft Outlook 2002 and 2003 are vulnerable to a denial of service. By creating a specially-crafted URL containing a hostname appended with two null byte characters (%00), a remote attacker could cause the program to consume all available CPU resources and hang, once the URL is clicked.
Consequences:
Denial of Service
Remedy:
Apply the appropriate patch for your system, as listed in the latest Microsoft Security Bulletin. See References.
— OR —
Use Microsoft Automatic Update if it is supported by your operating system. The original bulletin issued by Microsoft has been superseded.
References:
- BugTraq Mailing List, Tue Feb 10 2004 - 05:17:33 CST: Internet Explorer/Outlook double null character DoS.
- Microsoft Security Bulletin MS04-025: Cumulative Security Update for Internet Explorer (867801).
- Microsoft Security Bulletin MS04-038: Cumulative Security Update for Internet Explorer (834707).
- Microsoft Security Bulletin MS04-040: Cumulative Security Update for Internet Explorer (889293).
- Microsoft Security Bulletin MS05-014: Cumulative Security Update for Internet Explorer (867282).
- Microsoft Security Bulletin MS05-020: Cumulative Security Update for Internet Explorer (890923).
- Microsoft Security Bulletin MS05-025: Cumulative Security Update for Internet Explorer (883939).
- Microsoft Security Bulletin MS05-038: Cumulative Security Update for Internet Explorer (896727).
- Microsoft Security Bulletin MS05-052: Cumulative Security Update for Internet Explorer (896688).
- Microsoft Security Bulletin MS05-054: Cumulative Security Update for Internet Explorer (905915).
- Microsoft Security Bulletin MS06-004: Cumulative Security Update for Internet Explorer (910620).
- Microsoft Security Bulletin MS06-013: Cumulative Security Update for Internet Explorer (912812).
- Microsoft Security Bulletin MS06-021: Cumulative Security Update for Internet Explorer (916281).
- Microsoft Security Bulletin MS06-042: Cumulative Security Update for Internet Explorer (918899).
- Microsoft Security Bulletin MS06-067: Cumulative Security Update for Internet Explorer (922760).
- Microsoft Security Bulletin MS06-072: Cumulative Security Update for Internet Explorer (925454).
- Microsoft Security Bulletin MS07-016: Cumulative Security Update for Internet Explorer (928090).
- Microsoft Security Bulletin MS07-027: Cumulative Security Update for Internet Explorer (931768).
- Microsoft Security Bulletin MS07-033: Cumulative Security Update for Internet Explorer (933566).
- Microsoft Security Bulletin MS07-045: Cumulative Security Update for Internet Explorer (937143).
- Microsoft Security Bulletin MS07-057: Cumulative Security Update for Internet Explorer (939653).
- Microsoft Security Bulletin MS07-069: Cumulative Security Update for Internet Explorer (942615).
- Microsoft Security Bulletin MS08-010: Cumulative Security Update for Internet Explorer (944533).
- Microsoft Security Bulletin MS08-024: Cumulative Security Update for Internet Explorer (947864).
- Microsoft Security Bulletin MS08-031: Cumulative Security Update for Internet Explorer (950759).
- Microsoft Security Bulletin MS08-045: Cumulative Security Update for Internet Explorer (953838).
- Microsoft Security Bulletin MS08-058: Cumulative Security Update for Internet Explorer (956390).
- BID-12530: Microsoft Internet Explorer Multiple Vulnerabilities
- BID-9629: Microsoft Internet Explorer Double-Null URI Denial Of Service Vulnerability
- CVE-2004-0284: Microsoft Internet Explorer 6.0, Outlook 2002, and Outlook 2003 allow remote attackers to cause a denial of service (CPU consumption), if Do not save encrypted pages to disk is disabled, via a web site or HTML e-mail that contains two null characters (%00) after the host name.
- OSVDB ID: 6931: Microsoft IE/Outlook Double Null Character DoS
Platforms Affected:
- Microsoft Internet Explorer 6.0
- Microsoft Outlook 2002
- Microsoft Outlook 2003
Reported:
Feb 10, 2004
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