NetBSD 5.1 fnmatch resource management

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.
6.7$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in NetBSD 5.1. This affects the function fnmatch. Performing a manipulation results in resource management. This vulnerability was named CVE-2011-0419. In addition, an exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in NetBSD 5.1 (Operating System). It has been classified as critical. This affects the function fnmatch. The manipulation with an unknown input leads to a resource management vulnerability. CWE is classifying the issue as CWE-399. This is going to have an impact on availability. The summary by CVE is:

Stack consumption vulnerability in the fnmatch implementation in apr_fnmatch.c in the Apache Portable Runtime (APR) library before 1.4.3 and the Apache HTTP Server before 2.2.18, and in fnmatch.c in libc in NetBSD 5.1, OpenBSD 4.8, FreeBSD, Apple Mac OS X 10.6, Oracle Solaris 10, and Android, allows context-dependent attackers to cause a denial of service (CPU and memory consumption) via *? sequences in the first argument, as demonstrated by attacks against mod_autoindex in httpd.

The weakness was presented 05/12/2011 by Maksymilian Arciemowicz (Website). The advisory is shared at securityreason.com. This vulnerability is uniquely identified as CVE-2011-0419 since 01/11/2011. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details and a public exploit are known.

The exploit is shared for download at securityfocus.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 68284 (Oracle Linux 4 / 5 / 6 : apr (ELSA-2011-0844)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Oracle Linux Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 105728 (EOL/Obsolete Software: Apache HTTP Server 2.2.x).

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

The vulnerability is also documented in the databases at Exploit-DB (35738), Tenable (68284), SecurityFocus (BID 47820†), Secunia (SA44578†) and SecurityTracker (ID 1025527†). See VDB-4352, VDB-4548, VDB-4582 and VDB-5298 for similar entries. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 68284
Nessus Name: Oracle Linux 4 / 5 / 6 : apr (ELSA-2011-0844)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 69734
OpenVAS Name: Debian Security Advisory DSA 2237-1 (apr)
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: 🔍

Patch: securityreason.com
Suricata ID: 2012926
Suricata Class: 🔍
Suricata Message: 🔍

Timelineinfo

01/11/2011 🔍
05/12/2011 +121 days 🔍
05/12/2011 +0 days 🔍
05/12/2011 +0 days 🔍
05/12/2011 +0 days 🔍
05/12/2011 +0 days 🔍
05/16/2011 +4 days 🔍
05/19/2011 +3 days 🔍
07/12/2013 +785 days 🔍
06/16/2024 +3992 days 🔍

Sourcesinfo

Advisory: securityreason.com
Researcher: Maksymilian Arciemowicz
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2011-0419 (🔍)
GCVE (CVE): GCVE-0-2011-0419
GCVE (VulDB): GCVE-100-4353

OVAL: 🔍
IAVM: 🔍

SecurityFocus: 47820 - Apache APR 'apr_fnmatch()' Denial of Service Vulnerability
Secunia: 44578 - NetBSD "fnmatch()" Denial of Service Vulnerability, Less Critical
SecurityTracker: 1025527

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

Entryinfo

Created: 05/19/2011 02:00
Updated: 06/16/2024 14:59
Changes: 05/19/2011 02:00 (96), 04/27/2019 11:33 (2), 06/16/2024 14:59 (16)
Complete: 🔍
Cache ID: 216:5EC:103

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Are you interested in using VulDB?

Download the whitepaper to learn more about our service!