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.
5.1	$0-$5k	0.00

A vulnerability was found in Fail2ban. It has been declared as critical. This vulnerability affects an unknown code block of the component Locking. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect availability. CVE summarizes:

config/filter.d/cyrus-imap.conf in the cyrus-imap 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 shared 02/01/2014 as confirmed advisory (CERT.org). The advisory is available at kb.cert.org. This vulnerability was named CVE-2013-7177 since 12/19/2013. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not 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 (90831), Tenable (82169) and Vulnerability Center (SBV-44463†). The entries VDB-66273 and VDB-64808 are related to this item. Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

• Fail2ban

Version

• 0.1.0
• 0.1.1
• 0.1.2
• 0.3.0
• 0.3.1
• 0.4.0
• 0.4.1
• 0.5.0
• 0.5.1
• 0.5.2
• 0.5.3
• 0.5.4
• 0.5.5
• 0.6.0
• 0.6.1
• 0.7.0
• 0.7.1
• 0.7.2
• 0.7.3
• 0.7.4
• 0.7.5
• 0.7.6
• 0.7.7
• 0.7.8
• 0.7.9
• 0.8.0
• 0.8.1
• 0.8.2
• 0.8.3
• 0.8.4
• 0.8.5
• 0.8.6
• 0.8.7
• 0.8.7.1
• 0.8.8
• 0.8.9
• 0.8.10

License

• open-source

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

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

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

NVD Base Score: 🔍

Exploitinginfo

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

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

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

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 🔍
02/01/2014 +4 days 🔍
02/01/2014 +0 days 🔍
05/13/2014 +101 days 🔍
03/24/2015 +315 days 🔍
08/17/2024 +3434 days 🔍

Sourcesinfo

Advisory: bd175f026737d66e7110868fb50b3760ff75e087
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2013-7177 (🔍)
GCVE (CVE): GCVE-0-2013-7177
GCVE (VulDB): GCVE-100-66274

OVAL: 🔍

CERT: 🔍
X-Force: 90831
SecurityFocus: 65184
Vulnerability Center: 44463 - Fail2ban before 0.8.11 Remote DoS via a Specially Crafted Email Address in the cyrus-imap Filter - CVE-2013-7177, Medium

See also: 🔍

Entryinfo

Created: 03/24/2015 03:54 PM
Updated: 08/17/2024 11:49 PM
Changes: 03/24/2015 03:54 PM (57), 05/28/2017 02:38 AM (11), 02/01/2022 08:29 AM (4), 02/01/2022 08:32 AM (2), 08/17/2024 11:49 PM (15)
Complete: 🔍
Cache ID: 18:323:40

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