Microsoft IIS 5.0 Server-Side Include ssinc.dll memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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8.4$0-$5k0.00

A vulnerability was found in Microsoft IIS 5.0 (Web Server). It has been declared as critical. This vulnerability affects an unknown functionality in the library ssinc.dll of the component Server-Side Include. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Buffer overflow in ssinc.dll in IIS 5.0 and 4.0 allows local users to gain system privileges via a Server-Side Includes (SSI) directive for a long filename, which triggers the overflow when the directory name is added, aka the "SSI privilege elevation" vulnerability.

The issue has been introduced in 02/17/2000. The weakness was presented 09/20/2001 by NSFOCUS with NSFOCUS Security Team as not defined posting (Bugtraq). The advisory is shared for download at marc.theaimsgroup.com. This vulnerability was named CVE-2001-0506. The exploitation appears to be easy. The attack needs to be approached locally. No form of authentication is required for a successful exploitation. Technical details and also a public exploit are known.

A public exploit has been developed in ANSI C. It is possible to download the exploit at securityfocus.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 487 days. During that time the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 10685 (Microsoft IIS ISAPI Filter Multiple Vulnerabilities (MS01-044)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Web Servers and running in the context r.

Upgrading eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (6984) and Tenable (10685). See 17370, 17568 and 17569 for similar entries.

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CPE 2.3info

CPE 2.2info

CVSSv4info

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CVSSv3info

VulDB Meta Base Score: 9.3
VulDB Meta Temp Score: 8.4

VulDB Base Score: 9.3
VulDB Temp Score: 8.4
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CVSSv2info

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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept
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Nessus ID: 10685
Nessus Name: Microsoft IIS ISAPI Filter Multiple Vulnerabilities (MS01-044)
Nessus File: 🔍
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OpenVAS ID: 10767
OpenVAS Name: Tests for Nimda Worm infected HTML files
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Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Upgrade
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Timelineinfo

02/17/2000 🔍
06/18/2001 +487 days 🔍
06/19/2001 +1 days 🔍
08/15/2001 +57 days 🔍
08/15/2001 +0 days 🔍
09/20/2001 +36 days 🔍
09/20/2001 +0 days 🔍
12/01/2003 +802 days 🔍
07/09/2014 +3873 days 🔍
05/17/2019 +1773 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: marc.theaimsgroup.com
Researcher: NSFOCUS
Organization: NSFOCUS Security Team
Status: Not defined

CVE: CVE-2001-0506 (🔍)
X-Force: 6984 - Microsoft IIS specially-crafted SSI directives buffer overflow
Vulnerability Center: 3053 - [MS01-044] Buffer Overflow in IIS 5.0 and 4.0 Allows Local Users Privilege Escalation, Medium
SecurityFocus: 3190 - Microsoft IIS SSI Buffer Overrun Privelege Elevation Vulnerability

scip Labs: https://www.scip.ch/en/?labs.20161013
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Entryinfo

Created: 07/09/2014 12:22
Updated: 05/17/2019 12:00
Changes: 07/09/2014 12:22 (81), 05/17/2019 12:00 (2)
Complete: 🔍

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