Microsoft Internet Explorer HTTP 1.1 compression long URL buffer overflow variant
| ie-url-compression-bo (28893) |  High Risk |
Description:
Microsoft Internet Explorer is vulnerable to a heap-based buffer overflow, caused by improper bounds checking of an overly long URL when viewing a Web site using HTTP 1.1 compression. A remote attacker could exploit this vulnerability to cause the victim's browser to crash or execute arbitrary code on the victim's system, if the attacker could persuade the victim to visit a malicious Web page.
Note: This vulnerability only affects systems with either the original MS06-042 update for Internet Explorer installed (August 8, 2006) or the re-released MS06-042 update for Internet Explorer installed (August 24, 2006).
*CVSS:
| Base Score: | 8 |
| Access Vector: | Remote |
| Access Complexity: | High |
| Authentication: | Not Required |
| Confidentiality Impact: | Complete |
| Integrity Impact: | Complete |
| Availability Impact: | Complete |
| Temporal Score: | 5.9 |
| Exploitability: | Unproven |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Gain Access
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 The original bulletin issued by Microsoft has been superseded.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:
- EEYEB-AD20060912: Internet Explorer Compressed Content URL Heap Overflow Vulnerability #2.
- Microsoft Security Advisory (923762): Long URLs to sites using HTTP 1.1 and compression Could Cause Internet Explorer 6 Service Pack 1 to Unexpectedly Exit.
- 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-19987: Microsoft Internet Explorer HTTP 1.1 and Compression Long URI Buffer Overflow Variant Vulnerability
- CVE-2006-3873: Heap-based buffer overflow in URLMON.DLL in Microsoft Internet Explorer 6 SP1 on Windows 2000 and XP SP1, with versions the MS06-042 patch before 20060912, allows remote attackers to cause a denial of service (crash) or execute arbitrary code via a long URL in a GZIP-encoded website that was the target of an HTTP redirect, due to an incomplete fix for CVE-2006-3869.
- OSVDB ID: 30834: Microsoft IE URLMON.DLL Long URL HTTP Redirect Overflow
- SECTRACK ID: 1016839: Microsoft Internet Explorer URLMON.DLL Buffer Overflow Lets Remote Users Execute Arbitrary Code
Platforms Affected:
- Microsoft Internet Explorer 5.01 SP4
- Microsoft Internet Explorer 6 SP1
- Microsoft Windows 2000 SP4
- Microsoft Windows XP SP1
Reported:
Sep 12, 2006
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 the author/distributor (IBM Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.
For corrections or additions please email xforce@iss.net
* According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.
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.