Apache HTTP Server up to 1.3.6 mod_deflate resource management

CVSS Meta Temp Score
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CTI Interest Score
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7.1$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in Apache HTTP Server up to 1.3.6. This affects an unknown part of the component mod_deflate. Executing a manipulation can lead to resource management. This vulnerability is tracked as CVE-2009-1891. No exploit exists.

Detailsinfo

A vulnerability classified as critical was found in Apache HTTP Server up to 1.3.6 (Web Server). This vulnerability affects an unknown functionality of the component mod_deflate. The manipulation with an unknown input leads to a resource management vulnerability. The CWE definition for the vulnerability is CWE-399. As an impact it is known to affect availability. CVE summarizes:

The mod_deflate module in Apache httpd 2.2.11 and earlier compresses large files until completion even after the associated network connection is closed, which allows remote attackers to cause a denial of service (CPU consumption).

The weakness was disclosed 07/10/2009 (Website). The advisory is shared for download at rhn.redhat.com. This vulnerability was named CVE-2009-1891 since 06/02/2009. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available.

It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 67074 (CentOS 4 : httpd (CESA-2009:1580)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 105728 (EOL/Obsolete Software: Apache HTTP Server 2.2.x).

A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (51626), Tenable (67074), SecurityFocus (BID 35623†), OSVDB (55782†) and Secunia (SA35721†). The entries VDB-4353, VDB-4352, VDB-4548 and VDB-4582 are pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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Vendor

Name

Version

License

Support

  • end of life (old version)

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.1

VulDB Base Score: 7.5
VulDB Temp Score: 7.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 67074
Nessus Name: CentOS 4 : httpd (CESA-2009:1580)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 64423
OpenVAS Name: Debian Security Advisory DSA 1834-1 (apache2)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

06/02/2009 🔍
07/06/2009 +34 days 🔍
07/06/2009 +0 days 🔍
07/09/2009 +3 days 🔍
07/10/2009 +1 days 🔍
07/10/2009 +0 days 🔍
07/10/2009 +0 days 🔍
07/10/2009 +0 days 🔍
07/12/2009 +1 days 🔍
07/13/2009 +1 days 🔍
06/29/2013 +1447 days 🔍
03/17/2015 +626 days 🔍
08/12/2021 +2340 days 🔍

Sourcesinfo

Vendor: apache.org

Advisory: rhn.redhat.com
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2009-1891 (🔍)
GCVE (CVE): GCVE-0-2009-1891
GCVE (VulDB): GCVE-100-48952

OVAL: 🔍

X-Force: 51626
SecurityFocus: 35623 - Apache 'mod_deflate' Remote Denial Of Service Vulnerability
Secunia: 35721 - Gentoo update for apache, Moderately Critical
OSVDB: 55782 - Apache HTTP Server mod_deflate Module Aborted Connection DoS
SecurityTracker: 1022529 - Apache mod_deflate Connection State Bug Lets Remote Users Deny Service
Vulnerability Center: 22817 - Apache 2.2.11 and Prior mod_deflate Module Remote DoS Vulnerability, High
Vupen: ADV-2009-1841

See also: 🔍

Entryinfo

Created: 03/17/2015 23:38
Updated: 08/12/2021 10:03
Changes: 03/17/2015 23:38 (70), 02/11/2017 10:29 (17), 08/12/2021 10:03 (3)
Complete: 🔍
Cache ID: 216:946:103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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