Apache HTTP Server up to 2.2.2 HTTP Header Expect-Header cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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5.7$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in Apache HTTP Server up to 2.2.2. The affected element is an unknown function of the component HTTP Header Handler. The manipulation of the argument Expect-Header leads to cross site scripting. This vulnerability is listed as CVE-2006-3918. The attack may be initiated remotely. In addition, an exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Apache HTTP Server up to 2.2.2 (Web Server). It has been rated as critical. This issue affects some unknown processing of the component HTTP Header Handler. The manipulation of the argument Expect-Header with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-80. The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special characters such as "<", ">", and "&" that could be interpreted as web-scripting elements when they are sent to a downstream component that processes web pages. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

http_protocol.c in (1) IBM HTTP Server 6.0 before 6.0.2.13 and 6.1 before 6.1.0.1, and (2) Apache HTTP Server 1.3 before 1.3.35, 2.0 before 2.0.58, and 2.2 before 2.2.2, does not sanitize the Expect header from an HTTP request when it is reflected back in an error message, which might allow cross-site scripting (XSS) style attacks using web client components that can send arbitrary headers in requests, as demonstrated using a Flash SWF file.

The weakness was presented 07/25/2006 by Amit Klein with Aksecurity (Website). The advisory is shared at svn.apache.org. The identification of this vulnerability is CVE-2006-3918 since 07/27/2006. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Technical details as well as a public exploit are known. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

The exploit is available at secunia.com. It is declared as proof-of-concept. We expect the 0-day to have been worth approximately $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 22202 (RHEL 2.1 : apache (RHSA-2006:0618)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Red Hat Local Security Checks and running in the context r. The commercial vulnerability scanner Qualys is able to test this issue with plugin 118824 (HP-UX Apache-based Web Server Remote Denial of Service Vulnerability (HPSBUX02612)).

Upgrading eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at apache.org. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published 2 years after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Exploit-DB (28424), Tenable (22202), SecurityFocus (BID 19661†), OSVDB (27488†) and Secunia (SA29640†). See VDB-2615, VDB-3489, VDB-8300 and VDB-8298 for similar entries. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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Support

  • end of life (old version)

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 5.7

VulDB Base Score: 6.3
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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Exploitinginfo

Class: Cross site scripting
CWE: CWE-80 / CWE-74 / CWE-707
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

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

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 22202
Nessus Name: RHEL 2.1 : apache (RHSA-2006:0618)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 57335
OpenVAS Name: Debian Security Advisory DSA 1167-1 (apache)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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0-Day Time: 🔍
Exposure Time: 🔍

Patch: apache.org

Timelineinfo

07/24/2006 🔍
07/25/2006 +1 days 🔍
07/25/2006 +0 days 🔍
07/25/2006 +0 days 🔍
07/26/2006 +0 days 🔍
07/27/2006 +1 days 🔍
07/27/2006 +0 days 🔍
08/10/2006 +14 days 🔍
03/26/2008 +594 days 🔍
02/10/2025 +6165 days 🔍

Sourcesinfo

Vendor: apache.org

Advisory: svn.apache.org
Researcher: Amit Klein
Organization: Aksecurity
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2006-3918 (🔍)
GCVE (CVE): GCVE-0-2006-3918
GCVE (VulDB): GCVE-100-2393

OVAL: 🔍

SecurityFocus: 19661 - Apache HTTP Server Arbitrary HTTP Request Headers Security Weakness
Secunia: 29640 - SUSE update for apache and apache2, Less Critical
OSVDB: 27488 - IBM HTTP Server Expect Header XSS
SecurityTracker: 1016569 - IBM HTTP Server (IHS) Lack of Input Validation in Expect Header May Permit Cross-Site Scripting Attacks
Vupen: ADV-2006-5089

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

Entryinfo

Created: 07/26/2006 10:36
Updated: 02/10/2025 23:25
Changes: 07/26/2006 10:36 (89), 04/16/2019 15:10 (5), 03/13/2021 09:46 (7), 03/13/2021 09:50 (1), 02/10/2025 23:25 (15)
Complete: 🔍
Cache ID: 216:E54:103

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