Executive Summary

Summary
Title New gnupg packages fix cryptographic weakness
Informations
Name DSA-429 First vendor Publication 2004-01-26
Vendor Debian Last vendor Modification 2004-02-13
Severity (Vendor) N/A Revision 2

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:P/I:N/A:N)
Cvss Base Score 5 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Phong Nguyen identified a severe bug in the way GnuPG creates and uses ElGamal keys for signing. This is a significant security failure which can lead to a compromise of almost all ElGamal keys used for signing.

The update provided in DSA 459-1 disables the use of this type of key, using an interim fix. This update, DSA 459-2, implements a more correct and permanent fix provided by David Shaw.

For the current stable distribution (woody) this problem has been fixed in version 1.0.6-4woody3.

We recommend that you update your gnupg package.

Original Source

Url : http://www.debian.org/security/2004/dsa-429

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:10982
 
Oval ID: oval:org.mitre.oval:def:10982
Title: GnuPG (GPG) 1.0.2, and other versions up to 1.2.3, creates ElGamal type 20 (sign+encrypt) keys using the same key component for encryption as for signing, which allows attackers to determine the private key from a signature.
Description: GnuPG (GPG) 1.0.2, and other versions up to 1.2.3, creates ElGamal type 20 (sign+encrypt) keys using the same key component for encryption as for signing, which allows attackers to determine the private key from a signature.
Family: unix Class: vulnerability
Reference(s): CVE-2003-0971
Version: 5
Platform(s): Red Hat Enterprise Linux 3
CentOS Linux 3
Product(s):
Definition Synopsis:

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 12

OpenVAS Exploits

Date Description
2008-09-24 Name : Gentoo Security Advisory GLSA 200312-05 (GnuPG)
File : nvt/glsa_200312_05.nasl
2008-09-04 Name : FreeBSD Ports: gnupg
File : nvt/freebsd_gnupg.nasl
2008-01-17 Name : Debian Security Advisory DSA 429-1 (gnupg)
File : nvt/deb_429_1.nasl
2008-01-17 Name : Debian Security Advisory DSA 429-2 (gnupg)
File : nvt/deb_429_2.nasl

Open Source Vulnerability Database (OSVDB)

Id Description
2869 GnuPG ElGamal Encrypt+Sign Private Key Disclosure

GnuPG has a serious flaw that compromises any ElGamal key used for signing or encrypting material. When GnuPG creates ElGamal sign+encrypt keys (type 20), it does so in a cryptographically weak way. This can be exploited to compromise the private key.

Nessus® Vulnerability Scanner

Date Description
2009-04-23 Name : The remote FreeBSD host is missing a security-related update.
File : freebsd_pkg_813136472d0311d893550020ed76ef5a.nasl - Type : ACT_GATHER_INFO
2004-09-29 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-429.nasl - Type : ACT_GATHER_INFO
2004-07-31 Name : The remote Mandrake Linux host is missing a security update.
File : mandrake_MDKSA-2003-109.nasl - Type : ACT_GATHER_INFO
2004-07-25 Name : The remote host is missing a vendor-supplied security patch
File : suse_SA_2003_048.nasl - Type : ACT_GATHER_INFO
2004-07-06 Name : The remote Red Hat host is missing a security update.
File : redhat-RHSA-2003-395.nasl - Type : ACT_GATHER_INFO

Alert History

If you want to see full details history, please login or register.
0
1
Date Informations
2014-02-17 11:33:03
  • Multiple Updates
2013-05-11 12:18:26
  • Multiple Updates