Microsoft Internet Explorer HTTP 1.1 compression long URL buffer overflow
| ie-long-url-bo (28522) |  High Risk |
Description:
Microsoft Internet Explorer is vulnerable to a 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 was introduced with the release of the MS06-042 update for Internet Explorer on August 8, 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 The original bulletin issued by Microsoft has been superseded.
As a workaround, disable HTTP 1.1 in Internet Explorer. Refer to Microsoft Security Advisory (923762) for more information. See References.
References:
- BugTraq Mailing List, Fri Aug 25 2006 - 01:55:02 CDT: NSFOCUS SA2006-08 : Microsoft IE6 urlmon.dll Long URL Buffer Overflow Vulnerability.
- Full-Disclosure Mailing List, Tue Aug 22 2006 - 15:37:36 CDT: EEYE:ALERT: MS06-042 Related Internet Explorer 'Crash' is Exploitable.
- Microsoft Knowledgebase Article: 923762: Long URLs to sites using HTTP 1.1 and compression Could Cause Internet Explorer 6 Service Pack 1 to Unexpectedly Exit.
- 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-19667: Microsoft Internet Explorer HTTP 1.1 and Compression Long URI Buffer Overflow Vulnerability
- CVE-2006-3869: 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 20060824, allows remote attackers to cause a denial of service (crash) or execute arbitrary code via a long URL on a website that uses HTTP 1.1 compression.
- OSVDB ID: 28132: Microsoft IE HTTP 1.1 URL Parsing Overflow
- SA21557: Internet Explorer URL Compression Buffer Overflow
- SECTRACK ID: 1016731: Microsoft Internet Explorer URL Buffer Overflow in Processing HTTP 1.1 Protocol with Compression Lets Remote Users Execute Arbitrary Code
- US-CERT VU#821156: Microsoft Internet Explorer long URL buffer overflow
- VUPEN/ADV-2006-3356: Microsoft Internet Explorer Long URL Parsing Remote Buffer Overflow Vulnerabilities
Platforms Affected:
- Microsoft Internet Explorer 6.0 SP1
- Microsoft Windows 2000 Advanced Server
- Microsoft Windows 2000 SP4
- Microsoft Windows 2000 Professional
- Microsoft Windows XP Professional
- Microsoft Windows XP Home
Reported:
Aug 22, 2006
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For corrections or additions please email xforce@iss.net
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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.