Apache HTTP Server 2.4.0/2.4.1/2.4.2 mod_proxy_ajp.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, which was classified as problematic, was found in Apache HTTP Server 2.4.0/2.4.1/2.4.2. This impacts an unknown function of the file mod_proxy_ajp.c. Such manipulation leads to information disclosure. This vulnerability is uniquely identified as CVE-2012-3502. Moreover, an exploit is present. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Apache HTTP Server 2.4.0/2.4.1/2.4.2 (Web Server). It has been rated as problematic. Affected by this issue is some unknown functionality of the file mod_proxy_ajp.c. The manipulation with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is 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 disclosed 08/16/2012 by Rainer Jung as confirmed posting (Apache SVN). The advisory is shared for download at svn.apache.org. The public release has been coordinated in cooperation with the vendor. This vulnerability is handled as CVE-2012-3502 since 06/14/2012. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details as well as a public exploit are known. The MITRE ATT&CK project declares the attack technique as T1592.

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 (85090†), SecurityTracker (ID 1027421†) and Vulnerability Center (SBV-35951†). The entries VDB-6090, VDB-9602, VDB-67180 and VDB-67181 are pretty similar. 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: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

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 🔍
08/21/2012 +0 days 🔍
08/22/2012 +1 days 🔍
08/22/2012 +0 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: Rainer Jung
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2012-3502 (🔍)
GCVE (CVE): GCVE-0-2012-3502
GCVE (VulDB): GCVE-100-6092
SecurityFocus: 55131 - Apache HTTP Server HTML-Injection And Information Disclosure Vulnerabilities
OSVDB: 85090
SecurityTracker: 1027421 - Apache Web Server Bugs Permit Cross-Site Scripting and Information Disclosure Attacks
Vulnerability Center: 35951 - Apache HTTP Server 2.4.2 Remote Information Disclosure or HTML Injection Vulnerability, Medium

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

Entryinfo

Created: 09/05/2012 17:50
Updated: 04/12/2021 06:41
Changes: 09/05/2012 17:50 (70), 08/20/2017 22:08 (11), 04/12/2021 06:41 (3)
Complete: 🔍
Committer: olku
Cache ID: 216:0EA:103

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