CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C
AI Score
Confidence
Low
EPSS
Percentile
94.4%
The remote host is probably affected by the vulnerabilities
described in CVE-2008-1948, CVE-2008-1949, CVE-2008-1950.
# SPDX-FileCopyrightText: 2008 Greenbone AG
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-only
if(description)
{
script_oid("1.3.6.1.4.1.25623.1.0.90026");
script_version("2024-02-22T05:06:55+0000");
script_tag(name:"last_modification", value:"2024-02-22 05:06:55 +0000 (Thu, 22 Feb 2024)");
script_tag(name:"creation_date", value:"2008-09-06 11:16:56 +0200 (Sat, 06 Sep 2008)");
script_tag(name:"cvss_base", value:"10.0");
script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:C/I:C/A:C");
script_cve_id("CVE-2008-1948", "CVE-2008-1949", "CVE-2008-1950");
script_name("GnuTLS < 2.2.5 Vulnerability - Linux");
script_category(ACT_GATHER_INFO);
script_tag(name:"qod_type", value:"executable_version_unreliable");
script_copyright("Copyright (C) 2008 Greenbone AG");
script_family("General");
script_mandatory_keys("login/SSH/success");
script_dependencies("gather-package-list.nasl");
script_exclude_keys("ssh/no_linux_shell");
script_tag(name:"solution_type", value:"VendorFix");
script_tag(name:"solution", value:"All GnuTLS users should upgrade to the latest version.");
script_tag(name:"impact", value:"CVE-2008-1948
The _gnutls_server_name_recv_params function in lib/ext_server_name.c
in libgnutls in gnutls-serv in GnuTLS before 2.2.4 does not properly
calculate the number of Server Names in a TLS 1.0 Client Hello
message during extension handling, which allows remote attackers
to cause a denial of service (crash) or possibly execute arbitrary
code via a zero value for the length of Server Names, which leads
to a buffer overflow in session resumption data in the
pack_security_parameters function, aka GNUTLS-SA-2008-1-1.
CVE-2008-1949
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.
CVE 2008-1950
Integer signedness error in the _gnutls_ciphertext2compressed
function in lib/gnutls_cipher.c in libgnutls in GnuTLS before 2.2.4
allows remote attackers to cause a denial of service (buffer over-read
and crash) via a certain integer value in the Random field in an
encrypted Client Hello message within a TLS record with an invalid
Record Length, which leads to an invalid cipher padding length,
aka GNUTLS-SA-2008-1-3.");
script_tag(name:"summary", value:"The remote host is probably affected by the vulnerabilities
described in CVE-2008-1948, CVE-2008-1949, CVE-2008-1950.");
exit(0);
}
include("ssh_func.inc");
include("version_func.inc");
sock = ssh_login_or_reuse_connection();
if(!sock)
exit(0);
gnuPath = ssh_find_file(file_name:"/gnutls-cli$", useregex:TRUE, sock:sock);
foreach gnutlsBin (gnuPath)
{
gnutlsBin = chomp(gnutlsBin);
if(!gnutlsBin)
continue;
gnutlsVer = ssh_get_bin_version(full_prog_name:gnutlsBin, sock:sock, version_argv:"--version", ver_pattern:"version ([0-9.]+)");
if(gnutlsVer[1])
{
if(version_is_less(version:gnutlsVer[1], test_version:"2.2.4")){
security_message( port: 0, data: "The target host was found to be vulnerable" );
}
ssh_close_connection();
exit(0);
}
}
ssh_close_connection();