Microsoft IIS 5.1 Frontpage Server Extension File colegal.htm path traversal

Summaryinfo

A vulnerability classified as critical has been found in Microsoft IIS 5.1. Affected by this issue is some unknown functionality of the file colegal.htm of the component Frontpage Server Extension File Handler. The manipulation leads to path traversal. This vulnerability is documented as CVE-2002-1718. There is not any exploit available.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Microsoft IIS 5.1 (Web Server). This issue affects some unknown processing of the file colegal.htm of the component Frontpage Server Extension File Handler. The manipulation with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. Impacted is confidentiality. The summary by CVE is:

Microsoft Internet Information Server (IIS) 5.1 may allow remote attackers to view the contents of a Frontpage Server Extension (FPSE) file, as claimed using an HTTP request for colegal.htm that contains .. (dot dot) sequences.

The issue has been introduced in 10/25/2001. The weakness was released 12/31/2002 (Website). The advisory is shared at online.securityfocus.com. The identification of this vulnerability is CVE-2002-1718 since 06/21/2005. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 04/13/2019). MITRE ATT&CK project uses the attack technique T1006 for this issue.

The vulnerability was handled as a non-public zero-day exploit for at least 432 days. During that time the estimated underground price was around $25k-$100k. By approaching the search of inurl:colegal.htm it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 4084†). Entry connected to this vulnerability is available at VDB-19360. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Web Server

Vendor

• Microsoft

Name

• IIS

Version

• 5.1

License

• commercial

Website

• Vendor: https://www.microsoft.com/

CPE 2.3info

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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