lighttpd 1.4.15 mod_auth http_auth.c memory leak

CVSS Meta Temp Score
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CTI Interest Score
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5.9$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in lighttpd 1.4.15. This impacts an unknown function of the file http_auth.c of the component mod_auth. Executing a manipulation can lead to memory leak. This vulnerability appears as CVE-2007-3946. In addition, an exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability has been found in lighttpd 1.4.15 (Web Server) and classified as problematic. This vulnerability affects an unknown functionality of the file http_auth.c of the component mod_auth. The manipulation with an unknown input leads to a memory leak vulnerability. The CWE definition for the vulnerability is CWE-401. The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. As an impact it is known to affect confidentiality, and availability. CVE summarizes:

mod_auth (http_auth.c) in lighttpd before 1.4.16 allows remote attackers to cause a denial of service (daemon crash) via unspecified vectors involving (1) a memory leak, (2) use of md5-sess without a cnonce, (3) base64 encoded strings, and (4) trailing whitespace in the Auth-Digest header.

The bug was discovered 06/15/2007. The weakness was presented 06/15/2007 (Website). The advisory is shared for download at secunia.com. This vulnerability was named CVE-2007-3946 since 07/23/2007. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details and also a public exploit are known.

A public exploit has been developed in Ruby. It is possible to download the exploit at securityfocus.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 27340 (openSUSE 10 Security Update : lighttpd (lighttpd-3985)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 87262 (Lighttpd Multiple Vulnerabilities).

Upgrading to version 1.4.15 eliminates this vulnerability. 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 (35530), Tenable (27340), SecurityFocus (BID 24967†), OSVDB (38314†) and Secunia (SA26130†). See VDB-37952, VDB-37951, VDB-37950 and VDB-37949 for similar entries. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 5.9

VulDB Base Score: 6.5
VulDB Temp Score: 5.9
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: Memory leak
CWE: CWE-401 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

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

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 27340
Nessus Name: openSUSE 10 Security Update : lighttpd (lighttpd-3985)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 58581
OpenVAS Name: Debian Security Advisory DSA 1362-1 (lighttpd)
OpenVAS File: 🔍
OpenVAS 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: lighttpd 1.4.15

Timelineinfo

04/16/2007 🔍
04/16/2007 +0 days 🔍
06/15/2007 +60 days 🔍
06/15/2007 +0 days 🔍
07/20/2007 +34 days 🔍
07/20/2007 +0 days 🔍
07/23/2007 +2 days 🔍
07/23/2007 +0 days 🔍
07/30/2007 +7 days 🔍
08/28/2007 +29 days 🔍
10/17/2007 +50 days 🔍
03/15/2015 +2706 days 🔍
07/21/2021 +2320 days 🔍

Sourcesinfo

Advisory: 1875⛔
Status: Not defined
Confirmation: 🔍

CVE: CVE-2007-3946 (🔍)
GCVE (CVE): GCVE-0-2007-3946
GCVE (VulDB): GCVE-100-37948

OVAL: 🔍

X-Force: 35530
SecurityFocus: 24967 - Lighttpd Multiple Code Execution, Denial of Service and Information Disclosure Vulnerabilities
Secunia: 26130
OSVDB: 38314 - lighttpd mod_auth (http_auth.c) Unspecified Memory Leak DoS
Vulnerability Center: 15933 - Lighttpd Vulnerability Allows Remote Attacker to Cause DoS, High
Vupen: ADV-2007-2585

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

Entryinfo

Created: 03/15/2015 15:58
Updated: 07/21/2021 09:55
Changes: 03/15/2015 15:58 (89), 07/24/2019 11:30 (3), 07/21/2021 09:55 (3)
Complete: 🔍
Cache ID: 216::103

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