Jan Kneschke lighttpd 1.4.12/1.4.13 denial of service

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.5$0-$5k0.00

A vulnerability classified as critical was found in Jan Kneschke lighttpd 1.4.12/1.4.13 (Web Server). This vulnerability affects some unknown processing. The manipulation with the input value \r\n\r\n\ leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability. CVE summarizes:

lighttpd 1.4.12 and 1.4.13 allows remote attackers to cause a denial of service (cpu and resource consumption) by disconnecting while lighttpd is parsing CRLF sequences, which triggers an infinite loop and file descriptor consumption.

The weakness was released 04/16/2007 by Robert Jakabosky (Website). The advisory is shared for download at lighttpd.net. This vulnerability was named CVE-2007-1869 since 04/05/2007. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available.

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 25052 (FreeBSD : lighttpd -- Remote DOS in CRLF parsing (d2b48d30-ea97-11db-a802-000fea2763ce)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks.

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

The vulnerability is also documented in the databases at X-Force (33671) and Tenable (25052).

Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 6.5

VulDB Base Score: 7.5
VulDB Temp Score: 6.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
unlockunlockunlockunlockunlockunlock
unlockunlockunlockunlockunlockunlock
unlockunlockunlockunlockunlockunlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Dayunlockunlockunlockunlock
Todayunlockunlockunlockunlock

Nessus ID: 25052
Nessus Name: FreeBSD : lighttpd -- Remote DOS in CRLF parsing (d2b48d30-ea97-11db-a802-000fea2763ce)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 58862
OpenVAS Name: FreeBSD Ports: lighttpd
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Patch: lighttpd.net

Timelineinfo

04/05/2007 🔍
04/16/2007 +11 days 🔍
04/16/2007 +0 days 🔍
04/16/2007 +0 days 🔍
04/16/2007 +0 days 🔍
04/16/2007 +0 days 🔍
04/17/2007 +0 days 🔍
04/18/2007 +1 days 🔍
04/19/2007 +1 days 🔍
04/23/2007 +4 days 🔍
06/10/2007 +48 days 🔍
03/15/2021 +5027 days 🔍

Sourcesinfo

Advisory: lighttpd.net
Researcher: Robert Jakabosky
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2007-1869 (🔍)
OVAL: 🔍

X-Force: 33671 - Lighttpd \r\n\r\n denial of service, Medium Risk
Vulnerability Center: 14923 - lighttpd Denial of Service via Disconnection while Parsing CRLF Sequences, High
SecurityFocus: 23515 - Lighttpd Multiple Remote Denial of Service Vulnerabilities
Secunia: 24886 - lighttpd "mtime" and "\r\n\r\n\" Denial of Service Vulnerabilities, Moderately Critical
OSVDB: 34175 - lighttpd CRLF Processing DoS
Vupen: ADV-2007-1399

Entryinfo

Created: 04/18/2007 13:01
Updated: 03/15/2021 11:50
Changes: 04/18/2007 13:01 (86), 12/26/2016 09:48 (10), 03/15/2021 11:50 (3)
Complete: 🔍
Cache ID: 18:A04:103

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Interested in the pricing of exploits?

See the underground prices here!