Fail2ban up to 0.8.10 Locking input validation

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in Fail2ban. This impacts an unknown function of the component Locking. Performing a manipulation results in input validation. This vulnerability was named CVE-2013-7176. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Fail2ban. It has been classified as critical. This affects an unknown code of the component Locking. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on availability. The summary by CVE is:

config/filter.d/postfix.conf in the postfix filter in Fail2ban before 0.8.11 allows remote attackers to trigger the blocking of an arbitrary IP address via a crafted e-mail address that matches an improperly designed regular expression.

The weakness was presented 02/01/2014 as confirmed advisory (CERT.org). The advisory is shared at kb.cert.org. This vulnerability is uniquely identified as CVE-2013-7176 since 12/19/2013. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 82169 (Debian DLA-21-1 : fail2ban security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 166936 (OpenSuSE Security Update for fail2ban tool (openSUSE-SU-2014:0493-1)).

Upgrading to version 0.6.1 eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (90832), Tenable (82169), SecurityFocus (BID 65184†) and Vulnerability Center (SBV-44462†). See VDB-66274 and VDB-64808 for similar entries. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 82169
Nessus Name: Debian DLA-21-1 : fail2ban security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 702979
OpenVAS Name: Debian Security Advisory DSA 2979-1 (fail2ban - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Fail2ban 0.6.1
Patch: github.com

Timelineinfo

12/19/2013 🔍
01/28/2014 +40 days 🔍
01/28/2014 +0 days 🔍
02/01/2014 +4 days 🔍
02/01/2014 +0 days 🔍
05/13/2014 +101 days 🔍
03/24/2015 +315 days 🔍
03/26/2015 +2 days 🔍
08/17/2024 +3432 days 🔍

Sourcesinfo

Product: github.com

Advisory: eb2f0c927257120dfc32d2450fd63f1962f38821
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2013-7176 (🔍)
GCVE (CVE): GCVE-0-2013-7176
GCVE (VulDB): GCVE-100-66273

OVAL: 🔍

CERT: 🔍
X-Force: 90832
SecurityFocus: 65184 - Fail2ban Postfix Filter Remote Denial of Service Vulnerability
Vulnerability Center: 44462 - Fail2ban before 0.8.11 Remote DoS via a Specially Crafted Email Address in the postfix Filter - CVE-2013-7176, Medium

See also: 🔍

Entryinfo

Created: 03/24/2015 15:54
Updated: 08/17/2024 23:17
Changes: 03/24/2015 15:54 (64), 05/28/2017 02:37 (10), 02/01/2022 08:25 (4), 02/01/2022 08:27 (1), 08/17/2024 23:17 (15)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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