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

Critical Nessus Plugin ID 32321


The remote SSL certificate uses a weak key.


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.


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

Plugin Details

Severity: Critical

ID: 32321

File Name: ssl_debian_weak.nasl

Version: 1.21

Type: remote

Published: 2008/05/15

Modified: 2015/10/07

Dependencies: 56984

Risk Information

Risk Factor: Critical


Base Score: 10

Temporal Score: 8.3

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Temporal Vector: CVSS2#E:F/RL:OF/RC:C

Vulnerability Information

Required KB Items: SSL/Supported

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2008/05/14

Vulnerability Publication Date: 2008/05/13

Exploitable With

Core Impact

Reference Information

CVE: CVE-2008-0166

BID: 29179

OSVDB: 45029, 45503

CWE: 310