lighttpd 1.4.31/1.4.32 src/request.c http_request_split_value resource management

CVSS Meta Temp Score
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CTI Interest Score
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6.7$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in lighttpd 1.4.31/1.4.32. The affected element is the function http_request_split_value of the file src/request.c. The manipulation leads to resource management. This vulnerability is listed as CVE-2012-5533. In addition, an exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in lighttpd 1.4.31/1.4.32 (Web Server). This issue affects the function http_request_split_value of the file src/request.c. The manipulation with an unknown input leads to a resource management vulnerability. Using CWE to declare the problem leads to CWE-399. Impacted is availability. The summary by CVE is:

The http_request_split_value function in request.c in lighttpd before 1.4.32 allows remote attackers to cause a denial of service (infinite loop) via a request with a header containing an empty token, as demonstrated using the "Connection: TE,,Keep-Alive" header.

The weakness was presented 11/21/2012 by Jesse Sipprell with McClatchy Interactive, Inc. as confirmed advisory (Website). The advisory is shared at download.lighttpd.net. The public release was coordinated in cooperation with the project team. The identification of this vulnerability is CVE-2012-5533 since 10/24/2012. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details as well as a public exploit are known.

A public exploit has been developed by t4c and been published 1 days after the advisory. The exploit is available at exploit-db.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 74819 (openSUSE Security Update : lighttpd (openSUSE-SU-2012:1532-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 87126 (lighttpd "http_request_split_value()" Function Remote Denial of Service Vulnerability).

Upgrading to version 1.4.32 eliminates this vulnerability. The upgrade is hosted for download at lighttpd.net. A possible mitigation has been published immediately after the disclosure of the vulnerability. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 12788.

The vulnerability is also documented in the databases at X-Force (80213), Exploit-DB (22902), Tenable (74819), SecurityFocus (BID 56619†) and OSVDB (87623†). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 6.7

VulDB Base Score: 7.5
VulDB Temp Score: 6.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: t4c
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 74819
Nessus Name: openSUSE Security Update : lighttpd (openSUSE-SU-2012:1532-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 72598
OpenVAS Name: FreeBSD Ports: lighttpd
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: lighttpd 1.4.32
TippingPoint: 🔍

McAfee IPS Version: 🔍

ISS Proventia IPS: 🔍
PaloAlto IPS: 🔍
Fortigate IPS: 🔍

Timelineinfo

10/24/2012 🔍
11/21/2012 +28 days 🔍
11/21/2012 +0 days 🔍
11/21/2012 +0 days 🔍
11/21/2012 +0 days 🔍
11/21/2012 +0 days 🔍
11/21/2012 +0 days 🔍
11/22/2012 +1 days 🔍
11/22/2012 +0 days 🔍
11/22/2012 +0 days 🔍
11/24/2012 +2 days 🔍
11/26/2012 +2 days 🔍
11/27/2012 +1 days 🔍
06/13/2014 +563 days 🔍
12/29/2024 +3852 days 🔍

Sourcesinfo

Advisory: download.lighttpd.net
Researcher: Jesse Sipprell
Organization: McClatchy Interactive, Inc.
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2012-5533 (🔍)
GCVE (CVE): GCVE-0-2012-5533
GCVE (VulDB): GCVE-100-7013
X-Force: 80213
SecurityFocus: 56619 - lighttpd 'http_request_split_value()' Function Remote Denial of Service Vulnerability
Secunia: 51268 - lighttpd HTTP Header Processing Denial of Service Vulnerability, Moderately Critical
OSVDB: 87623
SecurityTracker: 1027802 - lighttpd Connection Header Processing Flaw Lets Remote Users Deny Service
Vulnerability Center: 37441 - Lighttpd <1.4.32 Remote Denial of Service via an HTTP Request With a Empty Token Header, High

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

Entryinfo

Created: 11/26/2012 15:08
Updated: 12/29/2024 06:24
Changes: 11/26/2012 15:08 (91), 04/22/2017 09:06 (11), 04/19/2021 15:09 (3), 09/24/2024 01:50 (14), 12/29/2024 06:24 (6)
Complete: 🔍
Committer:
Cache ID: 216:E5A:103

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