Executive Summary

Summary
Title GnuTLS: Multiple vulnerabilities
Informations
Name GLSA-200905-04 First vendor Publication 2009-05-24
Vendor Gentoo Last vendor Modification 2009-05-24
Severity (Vendor) Normal Revision N/A

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:P/A:P)
Cvss Base Score 7.5 Attack Range Network
Cvss Impact Score 6.4 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Synopsis

Multiple vulnerabilities in GnuTLS might result in a Denial of Service, spoofing or the generation of invalid keys.

Background

GnuTLS is an Open Source implementation of the TLS 1.0 and SSL 3.0
protocols.

Description

The following vulnerabilities were found in GnuTLS:

* Miroslav Kratochvil reported that lib/pk-libgcrypt.c does not properly handle corrupt DSA signatures, possibly leading to a double-free vulnerability (CVE-2009-1415).

* Simon Josefsson reported that GnuTLS generates RSA keys stored in DSA structures when creating a DSA key (CVE-2009-1416).

* Romain Francoise reported that the _gnutls_x509_verify_certificate() function in lib/x509/verify.c does not perform time checks, resulting in the "gnutls-cli" program accepting X.509 certificates with validity times in the past or future (CVE-2009-1417).

Impact

A remote attacker could entice a user or automated system to process a specially crafted DSA certificate, possibly resulting in a Denial of Service condition. NOTE: This issue might have other unspecified impact including the execution of arbitrary code. Furthermore, a remote attacker could spoof signatures on certificates and the "gnutls-cli"
application can be tricked into accepting an invalid certificate.

Workaround

There is no known workaround at this time.

Resolution

All GnuTLS users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-libs/gnutls-2.6.6"

References

[ 1 ] CVE-2009-1415 : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1415
[ 2 ] CVE-2009-1416 : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1416
[ 3 ] CVE-2009-1417 : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1417

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-200905-04.xml

Original Source

Url : http://security.gentoo.org/glsa/glsa-200905-04.xml

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-310 Cryptographic Issues

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 120

ExploitDB Exploits

id Description
2009-04-30 GnuTLS 2.6.x libgnutls lib/gnutls_pk.c DSA Key Storage Remote Spoofing
2009-04-30 GnuTLS 2.6.x libgnutls lib/pk-libgcrypt.c Malformed DSA Key Handling Remote DoS

OpenVAS Exploits

Date Description
2009-12-10 Name : Mandriva Security Advisory MDVSA-2009:308 (gnutls)
File : nvt/mdksa_2009_308.nasl
2009-09-02 Name : FreeBSD Ports: gnutls
File : nvt/freebsd_gnutls4.nasl
2009-06-05 Name : Mandrake Security Advisory MDVSA-2009:116 (gnutls)
File : nvt/mdksa_2009_116.nasl
2009-06-05 Name : Ubuntu USN-776-2 (kvm)
File : nvt/ubuntu_776_2.nasl
2009-05-25 Name : Gentoo Security Advisory GLSA 200905-04 (gnutls)
File : nvt/glsa_200905_04.nasl
0000-00-00 Name : Slackware Advisory SSA:2009-128-01 gnutls
File : nvt/esoft_slk_ssa_2009_128_01.nasl

Open Source Vulnerability Database (OSVDB)

Id Description
54625 GnuTLS libgnutls_x509 gnutls-cli lib/x509/verify.c _gnutls_x509_verify_certif...
54624 GnuTLS libgnutls lib/pk-libgcrypt.c Malformed DSA Key Handling Remote DoS
54623 GnuTLS libgnutls lib/gnutls_pk.c DSA Key Storage Remote Spoofing

Nessus® Vulnerability Scanner

Date Description
2009-12-04 Name : The remote Mandriva Linux host is missing one or more security updates.
File : mandriva_MDVSA-2009-308.nasl - Type : ACT_GATHER_INFO
2009-08-20 Name : The remote FreeBSD host is missing one or more security-related updates.
File : freebsd_pkg_b31a1088460f11dea11a0022156e8794.nasl - Type : ACT_GATHER_INFO
2009-05-26 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-200905-04.nasl - Type : ACT_GATHER_INFO
2009-05-19 Name : The remote Mandriva Linux host is missing one or more security updates.
File : mandriva_MDVSA-2009-116.nasl - Type : ACT_GATHER_INFO
2009-05-11 Name : The remote Slackware host is missing a security update.
File : Slackware_SSA_2009-128-01.nasl - Type : ACT_GATHER_INFO

Alert History

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Date Informations
2014-02-17 11:36:32
  • Multiple Updates