Secunia Advisory SA30220

Debian OpenSSL Predictable Random Number Generator and Update
Secunia Advisory SA30220
Get alerted and manage the vulnerability life cycle
Release Date 2008-05-13
Last Update 2008-05-16
   
Popularity 16,102 views
Comments 0 comments

Criticality level Highly criticalHighly critical
Impact Security Bypass
DoS
System access
Where From remote
Authentication level Available in Customer Area
   
Report reliability Available in Customer Area
Solution Status Vendor Patch
   
   
3rd party PoC/exploit Link available in Customer Area
Systems affected Available in Customer Area
Approve distribution Available in Customer Area
   
Operating System
Debian GNU/Linux 4.0

Secunia CVSS Score Available in Customer Area
CVE Reference(s) CVE-2007-3108 CVSS available in Customer Area
CVE-2007-4995 CVSS available in Customer Area
CVE-2008-0166 CVSS available in Customer Area
  

Description
Debian has issued an update for OpenSSL. This fixes some vulnerabilities, which can be exploited by malicious people to cause a DoS (Denial of Service) and potentially compromise a vulnerable system, and a security issue, which can lead to weak cryptographic key material.

1) The security issue is caused due to the random number generator in Debian's openssl package being predictable. This may lead to weak cryptographic key material being generated e.g. for SSH keys, OpenVPN keys, DNSSEC keys, and key material for use in X.509 certificates and session keys used in SSL/TLS connections.

The security issue is reported in Debian's OpenSSL packages starting with 0.9.8c-1 (uploaded to the unstable distribution on 2006-09-17) and affects all keys generated with an affected package.

2) An unspecified error within the DTLS implementation can be exploited by malicious people to cause a DoS (Denial of Service) and potentially compromise a vulnerable system.

For more information:
SA25878

Solution
Apply updated packages and recreate all cryptographic key material (see vendor advisory for more information).
Further details available in Customer Area

Provided and/or discovered by
1) The vendor credits Luciano Bello.

Changelog
Further details available in Customer Area

Original Advisory
http://lists.debian.org/debian-security-announce/2008/msg00152.html

Other references
Further details available in Customer Area

Deep Links
Links available in Customer Area


Do you have additional information related to this advisory?
Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com
Subject: Debian OpenSSL Predictable Random Number Generator and Update
 
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