Cipherdyne fwknop 2.0/2.0.1/2.0.2 input validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.1$0-$5k0.00

A vulnerability, which was classified as problematic, was found in Cipherdyne fwknop 2.0/2.0.1/2.0.2. This affects some unknown processing. 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:

fwknop before 2.0.3 does not properly validate IP addresses, which allows remote authenticated users to cause a denial of service (server crash) via a long IP address.

The weakness was presented 10/22/2012 (Website). The advisory is shared at cipherdyne.org. This vulnerability is uniquely identified as CVE-2012-4435 since 08/21/2012. The exploitability is told to be easy. It is possible to initiate the attack remotely. Required for exploitation is a authentication. Neither technical details nor an exploit are publicly available.

Upgrading to version 2.0 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at X-Force (79568). See VDB-62734 for similar entry.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: fwknop 2.0
Patch: 263fa01f2af1d336961df320f1c7a9ea84ddac9a

Timelineinfo

08/21/2012 🔍
10/22/2012 +62 days 🔍
10/22/2012 +0 days 🔍
03/24/2015 +883 days 🔍
12/19/2021 +2462 days 🔍

Sourcesinfo

Advisory: cipherdyne.org
Status: Not defined
Confirmation: 🔍

CVE: CVE-2012-4435 (🔍)
X-Force: 79568

See also: 🔍

Entryinfo

Created: 03/24/2015 12:22
Updated: 12/19/2021 14:19
Changes: 03/24/2015 12:22 (47), 02/23/2019 08:42 (3), 12/19/2021 14:19 (4)
Complete: 🔍
Cache ID: 3:208:103

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