Microsoft IIS 1.0/2.0/3.0 ASP Code %2e privileges management

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Microsoft IIS 1.0/2.0/3.0. The impacted element is an unknown function of the component ASP Code Handler. The manipulation of the argument %2e as part of URL results in privileges management. This vulnerability is reported as CVE-1999-0253. Moreover, an exploit is present. This vulnerability is historically impactful due to its background and the reception it garnered. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Microsoft IIS 1.0/2.0/3.0 (Web Server). It has been classified as critical. Affected is an unknown functionality of the component ASP Code Handler. The manipulation of the argument %2e as part of a URL leads to a privileges management vulnerability. CWE is classifying the issue as CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

iis 3.0 with the iis-fix hotfix installed allows remote intruders to read source code for asp programs by using a %2e instead of a . (dot) in the url.

The weakness was disclosed 01/01/1997. This vulnerability is traded as CVE-1999-0253. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details and a public exploit are known. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 06/23/2021). The MITRE ATT&CK project declares the attack technique as T1068. This vulnerability has a historic impact due to its background and reception.

It is declared as highly functional. As 0-day the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 10363 (Microsoft IIS/PWS %2e Request ASP Source Disclosure), 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. The commercial vulnerability scanner Qualys is able to test this issue with plugin 86177 (vWebServer ASP Source Code Disclosure Vulnerability).

Upgrading to version 4.0 eliminates this vulnerability. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 1090.

The vulnerability is also documented in the databases at X-Force (621), Tenable (10363), SecurityFocus (BID 1814†) and Vulnerability Center (SBV-395†). The entry VDB-16909 is pretty similar. Once again VulDB remains the best source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Privileges management
CWE: CWE-269 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Highly functional

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 10363
Nessus Name: Microsoft IIS/PWS %2e Request ASP Source Disclosure
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: IIS 4.0
TippingPoint: 🔍

McAfee IPS: 🔍
McAfee IPS Version: 🔍

SourceFire IPS: 🔍

Timelineinfo

01/01/1997 🔍
01/01/1997 +0 days 🔍
01/01/1997 +0 days 🔍
03/19/1997 +76 days 🔍
04/10/2000 +1118 days 🔍
12/17/2002 +981 days 🔍
06/17/2014 +4200 days 🔍
06/23/2021 +2563 days 🔍

Sourcesinfo

Vendor: microsoft.com

Status: Not defined

CVE: CVE-1999-0253 (🔍)
GCVE (CVE): GCVE-0-1999-0253
GCVE (VulDB): GCVE-100-13812
X-Force: 621
SecurityFocus: 1814
Vulnerability Center: 395 - Microsoft IIS 3.0 with iis-fix Hotfix Reveals ASP Source Code via %2e in URL, Medium

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 06/18/2014 00:06
Updated: 06/23/2021 03:22
Changes: 06/18/2014 00:06 (72), 05/06/2019 16:33 (1), 06/23/2021 03:22 (4)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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