FreeBSD 4.0/5.0 Random Generator /dev/random missing encryption

CVSS Meta Temp Score
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CTI Interest Score
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6.2$0-$5k0.00

A vulnerability, which was classified as critical, has been found in FreeBSD 4.0/5.0 (Operating System). Affected by this issue is an unknown part of the file /dev/random of the component Random Generator. The manipulation with an unknown input leads to a missing encryption vulnerability. Using CWE to declare the problem leads to CWE-311. The product does not encrypt sensitive or critical information before storage or transmission. Impacted is confidentiality, and integrity. CVE summarizes:

OpenSSL 0.9.4 and OpenSSH for FreeBSD do not properly check for the existence of the /dev/random or /dev/urandom devices, which are absent on FreeBSD Alpha systems, which causes them to produce weak keys which may be more easily broken.

The weakness was disclosed 06/12/2000 by FIRST (Website). The advisory is available at archives.neohapsis.com. This vulnerability is handled as CVE-2000-0535. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1600 by the MITRE ATT&CK project.

The vulnerability scanner Nessus provides a plugin with the ID 17707 (OpenSSL < 0.9.5a /dev/random Check Failure), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Web Servers and running in the context r.

Upgrading eliminates this vulnerability. A possible mitigation has been published 11 years after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (4704) and Tenable (17707).

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

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

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.2

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
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: Missing encryption
CWE: CWE-311 / CWE-310
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 17707
Nessus Name: OpenSSL < 0.9.5a /dev/random Check Failure
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

06/12/2000 🔍
06/12/2000 +0 days 🔍
06/12/2000 +0 days 🔍
06/12/2000 +0 days 🔍
10/28/2003 +1233 days 🔍
05/10/2010 +2386 days 🔍
11/18/2011 +557 days 🔍
06/25/2014 +950 days 🔍
05/16/2019 +1786 days 🔍

Sourcesinfo

Product: freebsd.org

Advisory: archives.neohapsis.com
Researcher: FIRST
Status: Not defined

CVE: CVE-2000-0535 (🔍)
X-Force: 4704
Vulnerability Center: 2725 - OpenSSL 0.9.4 and OpenSSH for FreeBSD Encryption Weakness, Medium
SecurityFocus: 1340 - FreeBSD Alpha Port Lack Of /dev/random and /dev/urandom Vulnerability

Entryinfo

Created: 06/25/2014 12:02
Updated: 05/16/2019 12:33
Changes: 06/25/2014 12:02 (69), 05/16/2019 12:33 (1)
Complete: 🔍

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