fail2ban 0.8 denial of service

CVSS Meta Temp Score
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CTI Interest Score
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6.6$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in fail2ban 0.8. Affected by this issue is some unknown functionality. The manipulation leads to denial of service. This vulnerability is listed as CVE-2007-4321. In addition, an exploit is available.

Detailsinfo

A vulnerability was found in fail2ban 0.8. It has been rated as critical. This issue affects some unknown processing. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

fail2ban 0.8 and earlier does not properly parse sshd log files, which allows remote attackers to add arbitrary hosts to the /etc/hosts.deny file and cause a denial of service by adding arbitrary IP addresses to the sshd log file, as demonstrated by logging in via ssh with a client protocol version identification containing an IP address string, a different vector than CVE-2006-6302.

The bug was discovered 06/06/2007. The weakness was presented 06/06/2007 (Website). It is possible to read the advisory at ossec.net. The identification of this vulnerability is CVE-2007-4321 since 08/13/2007. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are unknown but a public exploit is available.

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 25809 , which helps to determine the existence of the flaw in a target environment. It is .

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at X-Force (34757), Exploit-DB (30430), Tenable (25809), SecurityFocus (BID 25117†) and OSVDB (42484†). See VDB-33638, VDB-38305 and VDB-38304 for similar entries. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.6

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Denial of service
CWE: 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: 🔍

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Nessus ID: 25809
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Port: 🔍

OpenVAS ID: 60133
OpenVAS Name: Debian Security Advisory DSA 1456-1 (fail2ban)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

06/06/2007 🔍
06/06/2007 +0 days 🔍
06/06/2007 +0 days 🔍
07/28/2007 +52 days 🔍
08/13/2007 +16 days 🔍
08/13/2007 +0 days 🔍
11/29/2007 +108 days 🔍
01/14/2008 +45 days 🔍
03/16/2015 +2618 days 🔍
12/15/2024 +3562 days 🔍

Sourcesinfo

Advisory: ossec.net
Status: Not defined

CVE: CVE-2007-4321 (🔍)
GCVE (CVE): GCVE-0-2007-4321
GCVE (VulDB): GCVE-100-38303

OVAL: 🔍

X-Force: 34757
SecurityFocus: 25117 - Fail2ban Remote Denial of Service Vulnerability
Secunia: 23237
OSVDB: 42484 - Fail2ban Crafted Client Version sshd Log File Parsing Arbitrary Host Addition DoS
Vulnerability Center: 17350 - Fail2ban Improper SSH Log Files Parsing Allows Remote Attackers to Execute Code and Cause DoS, Critical

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

Entryinfo

Created: 03/16/2015 12:18
Updated: 12/15/2024 16:44
Changes: 03/16/2015 12:18 (66), 08/03/2019 15:22 (3), 07/21/2021 14:49 (3), 12/15/2024 16:44 (25)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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