Microsoft IIS 7.5 Log File Permission information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k0.12

Summaryinfo

A vulnerability categorized as problematic has been discovered in Microsoft IIS 7.5. Impacted is an unknown function of the component Log File Permission. The manipulation results in information disclosure. This vulnerability is cataloged as CVE-2012-2531. Furthermore, there is an exploit available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Microsoft IIS 7.5 (Web Server). Affected is an unknown functionality of the component Log File Permission. The manipulation with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality. CVE summarizes:

Microsoft Internet Information Services (IIS) 7.5 uses weak permissions for the Operational log, which allows local users to discover credentials by reading this file, aka "Password Disclosure Vulnerability."

The issue has been introduced in 07/22/2009. The weakness was shared 11/13/2012 by Justin Royce with ProDX as MS12-073 as confirmed bulletin (Website). The advisory is shared for download at technet.microsoft.com. The vendor cooperated in the coordination of the public release. This vulnerability is traded as CVE-2012-2531 since 05/09/2012. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are unknown but a private exploit is available. The MITRE ATT&CK project declares the attack technique as T1592.

It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 1210 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 62905 (MS12-073: Vulnerabilities in Microsoft Internet Information Services (IIS) Could Allow Information Disclosure (2733829)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows : Microsoft Bulletins. The commercial vulnerability scanner Qualys is able to test this issue with plugin 90842 (Microsoft Internet Information Services (IIS) Information Disclosure Vulnerability (MS12-073)).

Applying the patch KB2733829 is able to eliminate this problem. The bugfix is ready for download at technet.microsoft.com. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (77360), Tenable (62905), SecurityFocus (BID 56439†), OSVDB (87261†) and Secunia (SA51235†). The entry VDB-6925 is related to this item. 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: 5.3
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
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: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Access: Private
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 62905
Nessus Name: MS12-073: Vulnerabilities in Microsoft Internet Information Services (IIS) Could Allow Information Disclosure (2733829)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 902694
OpenVAS Name: Microsoft Windows IIS FTP Service Information Disclosure Vulnerability (2761226)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: KB2733829

Timelineinfo

07/22/2009 🔍
05/09/2012 +1022 days 🔍
11/08/2012 +183 days 🔍
11/13/2012 +5 days 🔍
11/13/2012 +0 days 🔍
11/13/2012 +0 days 🔍
11/13/2012 +0 days 🔍
11/13/2012 +0 days 🔍
11/14/2012 +1 days 🔍
11/14/2012 +0 days 🔍
11/15/2012 +1 days 🔍
04/19/2021 +3077 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: MS12-073
Researcher: Justin Royce
Organization: ProDX
Status: Confirmed
Coordinated: 🔍

CVE: CVE-2012-2531 (🔍)
GCVE (CVE): GCVE-0-2012-2531
GCVE (VulDB): GCVE-100-6924

OVAL: 🔍
IAVM: 🔍

X-Force: 77360
SecurityFocus: 56439 - Microsoft IIS CVE-2012-2531 Password Information Disclosure Vulnerability
Secunia: 51235 - Microsoft Internet Information Services Two Information Disclosure Vulnerabilities, Moderately Critical
OSVDB: 87261
Vulnerability Center: 37235 - [MS12-073] Microsoft IIS 7.5 Weak Operational Log Permissions Allow Local Credentials Disclosure, Low

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

Entryinfo

Created: 11/15/2012 10:10
Updated: 04/19/2021 10:11
Changes: 11/15/2012 10:10 (91), 04/21/2017 11:31 (2), 04/19/2021 10:11 (3)
Complete: 🔍
Committer:
Cache ID: 216:216:103

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