Debian OpenSSH/OpenSSL Package Random Number Generator Weakness (SSL check)

critical Nessus Plugin ID 32321

Synopsis

The remote SSL certificate uses a weak key.

Description

The remote x509 certificate on the remote SSL server has been generated on a Debian or Ubuntu system which contains a bug in the random number generator of its OpenSSL library.

The problem is due to a Debian packager removing nearly all sources of entropy in the remote version of OpenSSL.

An attacker can easily obtain the private part of the remote key and use this to decipher the remote session or set up a man in the middle attack.

Solution

Consider all cryptographic material generated on the remote host to be guessable. In particuliar, all SSH, SSL and OpenVPN key material should be re-generated.

See Also

http://www.nessus.org/u?107f9bdc

http://www.nessus.org/u?f14f4224

Plugin Details

Severity: Critical

ID: 32321

File Name: ssl_debian_weak.nasl

Version: 1.27

Type: remote

Published: 5/15/2008

Updated: 11/16/2020

Risk Information

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 8.3

Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C

Temporal Vector: E:F/RL:OF/RC:C

CVSS Score Source: CVE-2008-0166

Vulnerability Information

Required KB Items: SSL/Supported

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/14/2008

Vulnerability Publication Date: 5/13/2008

Exploitable With

Core Impact

Reference Information

CVE: CVE-2008-0166

BID: 29179

CWE: 310