Beasts vsftpd up to 0.0.13 ls.c vsf_filename_passes_filter 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.
3.9$0-$5k0.00

Summaryinfo

A vulnerability was found in Beasts vsftpd up to 0.0.13 and classified as problematic. The impacted element is the function vsf_filename_passes_filter of the file ls.c. Such manipulation leads to resource management. This vulnerability is referenced as CVE-2011-0762. Furthermore, an exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Beasts vsftpd up to 0.0.13 (File Transfer Software). It has been rated as problematic. Affected by this issue is the function vsf_filename_passes_filter of the file ls.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. CVE summarizes:

The vsf_filename_passes_filter function in ls.c in vsftpd before 2.3.3 allows remote authenticated users to cause a denial of service (CPU consumption and process slot exhaustion) via crafted glob expressions in STAT commands in multiple FTP sessions, a different vulnerability than CVE-2010-2632.

The weakness was published 03/02/2011 by Maksymilian Arciemowicz as confirmed advisory (CERT.org). The advisory is available at kb.cert.org. This vulnerability is handled as CVE-2011-0762 since 02/03/2011. The exploitation is known to be easy. The attack may be launched remotely. A simple authentication is needed for exploitation. Technical details as well as a public exploit are known.

A public exploit has been developed by Maksymilian Arciemowicz in ANSI C and been published immediately after the advisory. The exploit is available at securityfocus.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 68226 (Oracle Linux 4 / 5 / 6 : vsftpd (ELSA-2011-0337)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Oracle Linux Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 155467 (Oracle Enterprise Linux Update for vsftpd (ELSA-2011-0337)).

Upgrading to version 0.0.14 eliminates this vulnerability. Attack attempts may be identified with Snort ID 1379.

The vulnerability is also documented in the databases at X-Force (65873), Exploit-DB (16270), Tenable (68226), SecurityFocus (BID 46617†) and OSVDB (73340†). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 3.9

VulDB Base Score: 4.3
VulDB Temp Score: 3.9
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
Author: Maksymilian Arciemowicz
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 68226
Nessus Name: Oracle Linux 4 / 5 / 6 : vsftpd (ELSA-2011-0337)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 70399
OpenVAS Name: Debian Security Advisory DSA 2305-1 (vsftpd)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Upgrade: vsftpd 0.0.14

Snort ID: 1379
Snort Message: PROTOCOL-FTP STAT overflow attempt
Snort Class: 🔍
SourceFire IPS: 🔍

Timelineinfo

02/03/2011 🔍
03/01/2011 +26 days 🔍
03/01/2011 +0 days 🔍
03/02/2011 +1 days 🔍
03/02/2011 +0 days 🔍
03/02/2011 +0 days 🔍
03/02/2011 +0 days 🔍
03/10/2011 +8 days 🔍
03/13/2011 +3 days 🔍
07/12/2013 +852 days 🔍
03/20/2015 +616 days 🔍
01/18/2025 +3592 days 🔍

Sourcesinfo

Advisory: RHSA-2011:0337
Researcher: Maksymilian Arciemowicz
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2011-0762 (🔍)
GCVE (CVE): GCVE-0-2011-0762
GCVE (VulDB): GCVE-100-56690

OVAL: 🔍

CERT: 🔍
X-Force: 65873
SecurityFocus: 46617 - vsftpd FTP Server 'ls.c' Remote Denial of Service Vulnerability
OSVDB: 73340
SecurityTracker: 1025186 - vsftpd vsf_filename_passes_filter() Bug Lets Remote Authenticated Users Deny Service
Vulnerability Center: 30288 - vsftpd Before 2.3.3 Remote Denial of Service Vulnerability via Crafted Glob Expressions, Medium
Vupen: ADV-2011-0547

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

Entryinfo

Created: 03/20/2015 16:16
Updated: 01/18/2025 18:22
Changes: 03/20/2015 16:16 (70), 03/18/2017 08:39 (24), 10/18/2021 14:40 (3), 10/18/2021 14:43 (1), 10/18/2021 14:46 (2), 08/28/2024 17:17 (14), 12/28/2024 06:39 (1), 01/18/2025 18:22 (2)
Complete: 🔍
Cache ID: 216:E82:103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Interested in the pricing of exploits?

See the underground prices here!