Executive Summary
Summary | |
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Title | GnuTLS Client Hello repeat Denial of Service |
Informations | |||
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Name | VU#252626 | First vendor Publication | 2008-05-29 |
Vendor | VU-CERT | Last vendor Modification | 2008-05-29 |
Severity (Vendor) | N/A | Revision | M |
Security-Database Scoring CVSS v3
Cvss vector : N/A | |||
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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:M/Au:N/C:C/I:C/A:C) | |||
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Cvss Base Score | 9.3 | Attack Range | Network |
Cvss Impact Score | 10 | Attack Complexity | Medium |
Cvss Expoit Score | 8.6 | Authentication | None Required |
Calculate full CVSS 2.0 Vectors scores |
Detail
Vulnerability Note VU#252626GnuTLS Client Hello repeat Denial of ServiceOverviewA vulnerability exists in GnuTLS that may allow a remote attacker to cause a denial of service.I. DescriptionGnuTLS contains a vulnerability in gnults-serv that may result in a denial of service when handling a specially crafted TLS packet that contains multiple Client Hello messages. According to CERT-FI Vulnerability Advisory on GnuTLS:The program reads the first Client Hello and then proceeds to send Server Hello, Certificate, Certificate Request and Server Hello Done messages. After sending these, it apperently reads next Client Hello from the message sent earlier and crashes to segmentation fault caused by null pointer. Note that this issue may affect GnuTLS versions prior to 2.2.5 and also affects version 2.3.0. II. ImpactA remote, unauthorized attacker may be able to cause a denial of service.III. SolutionUpgrade or Apply PatchGnuTLS has issued an upgrade and a patch to address this issue. See GnuTLS Security Advisory SA-2008-01 for more information. GnuTLS is included in various Linux and UNIX distributions. Please consult the relevant documentation of your distribution to obtain the appropriate updates.
References
This issue was reported in GnuTLS Security Advisory SA-2008-01. GnuTLS credits Ossi Herrala and Jukka Taimisto from the CROSS project at Codenomicon Ltd. for reporting this issue. This document was written by Chris Taschner.
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Original Source
Url : http://www.kb.cert.org/vuls/id/252626 |
CWE : Common Weakness Enumeration
% | Id | Name |
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100 % | CWE-287 | Improper Authentication |
OVAL Definitions
Definition Id: oval:org.mitre.oval:def:9519 | |||
Oval ID: | oval:org.mitre.oval:def:9519 | ||
Title: | The _gnutls_recv_client_kx_message function in lib/gnutls_kx.c in libgnutls in gnutls-serv in GnuTLS before 2.2.4 continues to process Client Hello messages within a TLS message after one has already been processed, which allows remote attackers to cause a denial of service (NULL dereference and crash) via a TLS message containing multiple Client Hello messages, aka GNUTLS-SA-2008-1-2. | ||
Description: | The _gnutls_recv_client_kx_message function in lib/gnutls_kx.c in libgnutls in gnutls-serv in GnuTLS before 2.2.4 continues to process Client Hello messages within a TLS message after one has already been processed, which allows remote attackers to cause a denial of service (NULL dereference and crash) via a TLS message containing multiple Client Hello messages, aka GNUTLS-SA-2008-1-2. | ||
Family: | unix | Class: | vulnerability |
Reference(s): | CVE-2008-1949 | Version: | 5 |
Platform(s): | Red Hat Enterprise Linux 4 CentOS Linux 4 Oracle Linux 4 Red Hat Enterprise Linux 5 CentOS Linux 5 Oracle Linux 5 | Product(s): | |
Definition Synopsis: | |||
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CPE : Common Platform Enumeration
OpenVAS Exploits
Date | Description |
---|---|
2009-10-13 | Name : SLES10: Security update for GnuTLS File : nvt/sles10_gnutls1.nasl |
2009-10-10 | Name : SLES9: Security update for GnuTLS File : nvt/sles9p5035527.nasl |
2009-04-09 | Name : Mandriva Update for gnutls MDVSA-2008:106 (gnutls) File : nvt/gb_mandriva_MDVSA_2008_106.nasl |
2009-03-23 | Name : Ubuntu Update for gnutls12, gnutls13 vulnerabilities USN-613-1 File : nvt/gb_ubuntu_USN_613_1.nasl |
2009-03-06 | Name : RedHat Update for gnutls RHSA-2008:0489-01 File : nvt/gb_RHSA-2008_0489-01_gnutls.nasl |
2009-03-06 | Name : RedHat Update for gnutls RHSA-2008:0492-01 File : nvt/gb_RHSA-2008_0492-01_gnutls.nasl |
2009-02-17 | Name : Fedora Update for gnutls FEDORA-2008-4183 File : nvt/gb_fedora_2008_4183_gnutls_fc8.nasl |
2009-02-17 | Name : Fedora Update for gnutls FEDORA-2008-4259 File : nvt/gb_fedora_2008_4259_gnutls_fc9.nasl |
2009-02-17 | Name : Fedora Update for gnutls FEDORA-2008-4274 File : nvt/gb_fedora_2008_4274_gnutls_fc7.nasl |
2009-01-23 | Name : SuSE Update for gnutls SUSE-SA:2008:046 File : nvt/gb_suse_2008_046.nasl |
2008-09-24 | Name : Gentoo Security Advisory GLSA 200805-20 (gnutls) File : nvt/glsa_200805_20.nasl |
2008-09-06 | Name : GnuTLS < 2.2.5 vulnerability (Lin) File : nvt/gnutls_CB-A08-0079.nasl |
2008-09-06 | Name : GnuTLS < 2.2.4 vulnerability (Win) File : nvt/smbcl_gnutls_CB-A08-0079.nasl |
2008-05-27 | Name : Debian Security Advisory DSA 1581-1 (gnutls13) File : nvt/deb_1581_1.nasl |
0000-00-00 | Name : Slackware Advisory SSA:2008-180-01 gnutls File : nvt/esoft_slk_ssa_2008_180_01.nasl |
Open Source Vulnerability Database (OSVDB)
Id | Description |
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45383 | GnuTLS gnutls-serv libgnutls lib/gnutls_kx.c _gnutls_recv_client_kx_message F... |
Nessus® Vulnerability Scanner
Date | Description |
---|---|
2013-07-12 | Name : The remote Oracle Linux host is missing one or more security updates. File : oraclelinux_ELSA-2008-0492.nasl - Type : ACT_GATHER_INFO |
2013-07-12 | Name : The remote Oracle Linux host is missing one or more security updates. File : oraclelinux_ELSA-2008-0489.nasl - Type : ACT_GATHER_INFO |
2012-08-01 | Name : The remote Scientific Linux host is missing one or more security updates. File : sl_20080520_gnutls_on_SL5_x.nasl - Type : ACT_GATHER_INFO |
2012-08-01 | Name : The remote Scientific Linux host is missing one or more security updates. File : sl_20080520_gnutls_on_SL4_x.nasl - Type : ACT_GATHER_INFO |
2010-01-06 | Name : The remote CentOS host is missing one or more security updates. File : centos_RHSA-2008-0489.nasl - Type : ACT_GATHER_INFO |
2010-01-06 | Name : The remote CentOS host is missing one or more security updates. File : centos_RHSA-2008-0492.nasl - Type : ACT_GATHER_INFO |
2009-09-24 | Name : The remote SuSE 9 host is missing a security-related patch. File : suse9_12230.nasl - Type : ACT_GATHER_INFO |
2009-09-24 | Name : The remote SuSE 10 host is missing a security-related patch. File : suse_gnutls-5543.nasl - Type : ACT_GATHER_INFO |
2009-04-23 | Name : The remote Mandriva Linux host is missing one or more security updates. File : mandriva_MDVSA-2008-106.nasl - Type : ACT_GATHER_INFO |
2008-09-16 | Name : The remote openSUSE host is missing a security update. File : suse_gnutls-5275.nasl - Type : ACT_GATHER_INFO |
2008-09-16 | Name : The remote SuSE 10 host is missing a security-related patch. File : suse_gnutls-5601.nasl - Type : ACT_GATHER_INFO |
2008-07-02 | Name : The remote Slackware host is missing a security update. File : Slackware_SSA_2008-180-01.nasl - Type : ACT_GATHER_INFO |
2008-06-30 | Name : The remote Windows host contains a media player that is affected by several v... File : vlc_0_8_6h.nasl - Type : ACT_GATHER_INFO |
2008-05-22 | Name : The remote Fedora host is missing a security update. File : fedora_2008-4259.nasl - Type : ACT_GATHER_INFO |
2008-05-22 | Name : The remote Fedora host is missing a security update. File : fedora_2008-4274.nasl - Type : ACT_GATHER_INFO |
2008-05-22 | Name : The remote Gentoo host is missing one or more security-related patches. File : gentoo_GLSA-200805-20.nasl - Type : ACT_GATHER_INFO |
2008-05-22 | Name : The remote Fedora host is missing a security update. File : fedora_2008-4183.nasl - Type : ACT_GATHER_INFO |
2008-05-22 | Name : The remote Debian host is missing a security-related update. File : debian_DSA-1581.nasl - Type : ACT_GATHER_INFO |
2008-05-22 | Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2008-0489.nasl - Type : ACT_GATHER_INFO |
2008-05-22 | Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2008-0492.nasl - Type : ACT_GATHER_INFO |
2008-05-22 | Name : The remote Ubuntu host is missing one or more security-related patches. File : ubuntu_USN-613-1.nasl - Type : ACT_GATHER_INFO |