Apache HTTP Server 2.4.0/2.4.1/2.4.2 mod_proxy_http.c information disclosure

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in Apache HTTP Server 2.4.0/2.4.1/2.4.2. The impacted element is an unknown function of the file mod_proxy_http.c. The manipulation results in information disclosure. This vulnerability is known as CVE-2012-3502. Furthermore, an exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Apache HTTP Server 2.4.0/2.4.1/2.4.2 (Web Server). It has been classified as problematic. Affected is an unknown function of the file mod_proxy_http.c. 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:

The proxy functionality in (1) mod_proxy_ajp.c in the mod_proxy_ajp module and (2) mod_proxy_http.c in the mod_proxy_http module in the Apache HTTP Server 2.4.x before 2.4.3 does not properly determine the situations that require closing a back-end connection, which allows remote attackers to obtain sensitive information in opportunistic circumstances by reading a response that was intended for a different client.

The weakness was published 08/16/2012 by Yap Sok Ann as confirmed posting (Apache SVN). The advisory is available at svn.apache.org. The public release has been coordinated with the vendor. This vulnerability is traded as CVE-2012-3502 since 06/14/2012. 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. This vulnerability is assigned to T1592 by the MITRE ATT&CK project.

It is declared as proof-of-concept. As 0-day the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 61644 (Apache 2.4.x < 2.4.3 Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Web Servers. The commercial vulnerability scanner Qualys is able to test this issue with plugin 87109 (Apache HTTP Server HTML Injection And Information Disclosure Vulnerabilities).

Upgrading to version 2.4.3 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at svn.apache.org. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (61644), SecurityFocus (BID 55131†), OSVDB (85089†) and SecurityTracker (ID 1027421†). Similar entries are available at VDB-6092, VDB-9602, VDB-67180 and VDB-67181. If you want to get best quality of vulnerability data, you may have to visit VulDB.

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: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

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

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 61644
Nessus Name: Apache 2.4.x < 2.4.3 Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: HTTP Server 2.4.3
Patch: svn.apache.org

Timelineinfo

06/14/2012 🔍
08/16/2012 +63 days 🔍
08/16/2012 +0 days 🔍
08/21/2012 +5 days 🔍
08/21/2012 +0 days 🔍
08/22/2012 +1 days 🔍
09/02/2012 +11 days 🔍
09/05/2012 +3 days 🔍
04/12/2021 +3141 days 🔍

Sourcesinfo

Vendor: apache.org

Advisory: svn.apache.org
Researcher: Yap Sok Ann
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2012-3502 (🔍)
GCVE (CVE): GCVE-0-2012-3502
GCVE (VulDB): GCVE-100-6090
SecurityFocus: 55131 - Apache HTTP Server HTML-Injection And Information Disclosure Vulnerabilities
OSVDB: 85089
SecurityTracker: 1027421 - Apache Web Server Bugs Permit Cross-Site Scripting and Information Disclosure Attacks

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

Entryinfo

Created: 09/05/2012 17:42
Updated: 04/12/2021 06:36
Changes: 09/05/2012 17:42 (65), 08/20/2017 22:08 (10), 04/12/2021 06:36 (3)
Complete: 🔍
Committer: olku
Cache ID: 216::103

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