Inso dwhttpd 3.1a4 Encoding privileges management

CVSS Meta Temp Score
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CTI Interest Score
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A vulnerability was found in Inso dwhttpd 3.1a4 (Web Server). It has been declared as critical. Affected by this vulnerability is some unknown processing of the component Encoding Handler. The manipulation with an unknown input leads to a privileges management vulnerability. The CWE definition for the vulnerability is CWE-269. The software does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Format string vulnerability in AnswerBook2 (AB2) web server dwhttpd 3.1a4 allows remote attackers to cause a denial of service and possibly execute arbitrary commands via encoded % characters in an HTTP request, which is improperly logged.

The bug was discovered 08/01/2002. The weakness was shared 08/23/1998 as not defined posting (Bugtraq). The advisory is shared at This vulnerability is known as CVE-1999-1417. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

Upgrading eliminates this vulnerability. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 3498.

The vulnerability is also documented in the databases at X-Force (9758) and Vulnerability Center (SBV-11722). The entry 14208 is related to this item.


  • Sun Solaris 2.6/7.0





CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
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Class: Privileges management
CWE: CWE-269 / CWE-266
ATT&CK: T1068

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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OpenVAS ID: 11075
OpenVAS Name: dwhttpd format string
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Threat Intelligenceinfo

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Recommended: Upgrade
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04/30/1998 🔍
08/23/1998 +115 days 🔍
08/23/1998 +0 days 🔍
08/23/1998 +0 days 🔍
08/01/2002 +1439 days 🔍
05/31/2006 +1399 days 🔍
06/19/2014 +2941 days 🔍
06/19/2019 +1826 days 🔍


Advisory: [404 Not Found]
Status: Not defined

CVE: CVE-1999-1417 (🔍)
X-Force: 9758
Vulnerability Center: 11722 - AnswerBook2 Format String Vulnerability in dwhttpd, High
SecurityFocus: 253 - Solaris ab2 (DynaWeb) Server DoS & Possible Trojan Vulnerability
OSVDB: 10882 - CVE-1999-1417 - dwhttpd - Format String Issue

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Created: 06/19/2014 05:15 PM
Updated: 06/19/2019 06:00 PM
Changes: 06/19/2014 05:15 PM (67), 06/19/2019 06:00 PM (3)
Complete: 🔍


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