CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS
Percentile
47.2%
The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2023:2974-1 advisory.
SniHandler
can allocate up to 16MB of heap for each channel during the TLS handshake. When the handler or the channel does not have an idle timeout, it can be used to make a TCP server using the SniHandler
to allocate 16MB of heap. The SniHandler
class is a handler that waits for the TLS handshake to configure a SslHandler
according to the indicated server name by the ClientHello
record. For this matter it allocates a ByteBuf
using the value defined in the ClientHello
record. Normally the value of the packet should be smaller than the handshake packet but there are not checks done here and the way the code is written, it is possible to craft a packet that makes the SslClientHelloHandler
. This vulnerability has been fixed in version 4.1.94.Final.Note that Nessus has not tested for this issue but has instead relied only on the application’s self-reported version number.
#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The package checks in this plugin were extracted from
# SUSE update advisory SUSE-SU-2023:2974-1. The text itself
# is copyright (C) SUSE.
##
include('compat.inc');
if (description)
{
script_id(178933);
script_version("1.0");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/07/27");
script_cve_id("CVE-2023-34462");
script_xref(name:"SuSE", value:"SUSE-SU-2023:2974-1");
script_name(english:"SUSE SLED15 / SLES15 / openSUSE 15 Security Update : netty, netty-tcnative (SUSE-SU-2023:2974-1)");
script_set_attribute(attribute:"synopsis", value:
"The remote SUSE host is missing a security update.");
script_set_attribute(attribute:"description", value:
"The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are
affected by a vulnerability as referenced in the SUSE-SU-2023:2974-1 advisory.
- Netty is an asynchronous event-driven network application framework for rapid development of maintainable
high performance protocol servers & clients. The `SniHandler` can allocate up to 16MB of heap for each
channel during the TLS handshake. When the handler or the channel does not have an idle timeout, it can be
used to make a TCP server using the `SniHandler` to allocate 16MB of heap. The `SniHandler` class is a
handler that waits for the TLS handshake to configure a `SslHandler` according to the indicated server
name by the `ClientHello` record. For this matter it allocates a `ByteBuf` using the value defined in the
`ClientHello` record. Normally the value of the packet should be smaller than the handshake packet but
there are not checks done here and the way the code is written, it is possible to craft a packet that
makes the `SslClientHelloHandler`. This vulnerability has been fixed in version 4.1.94.Final.
(CVE-2023-34462)
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1212637");
# https://lists.suse.com/pipermail/sle-security-updates/2023-July/015642.html
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?9c355565");
script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2023-34462");
script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:N/I:N/A:C");
script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2023-34462");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"vuln_publication_date", value:"2023/06/20");
script_set_attribute(attribute:"patch_publication_date", value:"2023/07/26");
script_set_attribute(attribute:"plugin_publication_date", value:"2023/07/27");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:netty");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:netty-javadoc");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:netty-poms");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:netty-tcnative");
script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:15");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"SuSE Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2023 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/SuSE/release", "Host/SuSE/rpm-list");
exit(0);
}
include('rpm.inc');
if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item("Host/SuSE/release");
if (isnull(os_release) || os_release !~ "^(SLED|SLES|SUSE)") audit(AUDIT_OS_NOT, "SUSE / openSUSE");
var os_ver = pregmatch(pattern: "^(SLE(S|D)(?:_SAP)?\d+|SUSE([\d.]+))", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'SUSE / openSUSE');
os_ver = os_ver[1];
if (! preg(pattern:"^(SLED15|SLED_SAP15|SLES15|SLES_SAP15|SUSE15\.4|SUSE15\.5)$", string:os_ver)) audit(AUDIT_OS_NOT, 'SUSE SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 / openSUSE 15', 'SUSE / openSUSE (' + os_ver + ')');
if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'SUSE / openSUSE (' + os_ver + ')', cpu);
var service_pack = get_kb_item("Host/SuSE/patchlevel");
if (isnull(service_pack)) service_pack = "0";
if (os_ver == "SLED15" && (! preg(pattern:"^(4|5)$", string:service_pack))) audit(AUDIT_OS_NOT, "SLED15 SP4/5", os_ver + " SP" + service_pack);
if (os_ver == "SLED_SAP15" && (! preg(pattern:"^(4|5)$", string:service_pack))) audit(AUDIT_OS_NOT, "SLED_SAP15 SP4/5", os_ver + " SP" + service_pack);
if (os_ver == "SLES15" && (! preg(pattern:"^(3|4|5)$", string:service_pack))) audit(AUDIT_OS_NOT, "SLES15 SP3/4/5", os_ver + " SP" + service_pack);
if (os_ver == "SLES_SAP15" && (! preg(pattern:"^(4|5)$", string:service_pack))) audit(AUDIT_OS_NOT, "SLES_SAP15 SP4/5", os_ver + " SP" + service_pack);
var pkgs = [
{'reference':'netty-tcnative-2.0.61-150200.3.13.1', 'sp':'4', 'release':'SLED_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.4']},
{'reference':'netty-tcnative-2.0.61-150200.3.13.1', 'sp':'4', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.4']},
{'reference':'netty-4.1.94-150200.4.17.1', 'sp':'5', 'release':'SLED_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.5']},
{'reference':'netty-4.1.94-150200.4.17.1', 'sp':'5', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.5']},
{'reference':'netty-javadoc-4.1.94-150200.4.17.1', 'sp':'5', 'release':'SLED_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.5']},
{'reference':'netty-javadoc-4.1.94-150200.4.17.1', 'sp':'5', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.5']},
{'reference':'netty-poms-4.1.94-150200.4.17.1', 'sp':'5', 'release':'SLED_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.5']},
{'reference':'netty-poms-4.1.94-150200.4.17.1', 'sp':'5', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.5']},
{'reference':'netty-tcnative-2.0.61-150200.3.13.1', 'sp':'5', 'release':'SLED_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.5']},
{'reference':'netty-tcnative-2.0.61-150200.3.13.1', 'sp':'5', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.5']},
{'reference':'netty-tcnative-2.0.61-150200.3.13.1', 'sp':'4', 'release':'SLED15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-release-15.4', 'SUSE-Manager-Proxy-release-4.3', 'SUSE-Manager-Server-release-4.3', 'sle-module-development-tools-release-15.4', 'sled-release-15.4', 'sles-release-15.4', 'suse-manager-server-release-4.3']},
{'reference':'netty-tcnative-2.0.61-150200.3.13.1', 'sp':'4', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-release-15.4', 'SUSE-Manager-Proxy-release-4.3', 'SUSE-Manager-Server-release-4.3', 'sle-module-development-tools-release-15.4', 'sled-release-15.4', 'sles-release-15.4', 'suse-manager-server-release-4.3']},
{'reference':'netty-4.1.94-150200.4.17.1', 'sp':'5', 'release':'SLED15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-release-15.5', 'sle-module-packagehub-subpackages-release-15.5', 'sled-release-15.5', 'sles-release-15.5']},
{'reference':'netty-4.1.94-150200.4.17.1', 'sp':'5', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-release-15.5', 'sle-module-packagehub-subpackages-release-15.5', 'sled-release-15.5', 'sles-release-15.5']},
{'reference':'netty-javadoc-4.1.94-150200.4.17.1', 'sp':'5', 'release':'SLED15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-release-15.5', 'sle-module-packagehub-subpackages-release-15.5', 'sled-release-15.5', 'sles-release-15.5']},
{'reference':'netty-javadoc-4.1.94-150200.4.17.1', 'sp':'5', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-release-15.5', 'sle-module-packagehub-subpackages-release-15.5', 'sled-release-15.5', 'sles-release-15.5']},
{'reference':'netty-poms-4.1.94-150200.4.17.1', 'sp':'5', 'release':'SLED15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-release-15.5', 'sle-module-packagehub-subpackages-release-15.5', 'sled-release-15.5', 'sles-release-15.5']},
{'reference':'netty-poms-4.1.94-150200.4.17.1', 'sp':'5', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-release-15.5', 'sle-module-packagehub-subpackages-release-15.5', 'sled-release-15.5', 'sles-release-15.5']},
{'reference':'netty-tcnative-2.0.61-150200.3.13.1', 'sp':'5', 'release':'SLED15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-release-15.5', 'sle-module-development-tools-release-15.5', 'sled-release-15.5', 'sles-release-15.5']},
{'reference':'netty-tcnative-2.0.61-150200.3.13.1', 'sp':'5', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-release-15.5', 'sle-module-development-tools-release-15.5', 'sled-release-15.5', 'sles-release-15.5']},
{'reference':'netty-tcnative-2.0.61-150200.3.13.1', 'sp':'3', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_RT-release-15.3']},
{'reference':'netty-4.1.94-150200.4.17.1', 'release':'SUSE15.4', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.4']},
{'reference':'netty-javadoc-4.1.94-150200.4.17.1', 'release':'SUSE15.4', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.4']},
{'reference':'netty-poms-4.1.94-150200.4.17.1', 'release':'SUSE15.4', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.4']},
{'reference':'netty-tcnative-2.0.61-150200.3.13.1', 'release':'SUSE15.4', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.4']},
{'reference':'netty-tcnative-javadoc-2.0.61-150200.3.13.1', 'release':'SUSE15.4', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.4']},
{'reference':'netty-4.1.94-150200.4.17.1', 'release':'SUSE15.5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.5']},
{'reference':'netty-javadoc-4.1.94-150200.4.17.1', 'release':'SUSE15.5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.5']},
{'reference':'netty-poms-4.1.94-150200.4.17.1', 'release':'SUSE15.5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.5']},
{'reference':'netty-tcnative-2.0.61-150200.3.13.1', 'release':'SUSE15.5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.5']},
{'reference':'netty-tcnative-javadoc-2.0.61-150200.3.13.1', 'release':'SUSE15.5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.5']}
];
var ltss_caveat_required = FALSE;
var flag = 0;
foreach var package_array ( pkgs ) {
var reference = NULL;
var _release = NULL;
var sp = NULL;
var _cpu = NULL;
var exists_check = NULL;
var rpm_spec_vers_cmp = NULL;
if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
if (!empty_or_null(package_array['release'])) _release = package_array['release'];
if (!empty_or_null(package_array['sp'])) sp = package_array['sp'];
if (!empty_or_null(package_array['cpu'])) _cpu = package_array['cpu'];
if (!empty_or_null(package_array['exists_check'])) exists_check = package_array['exists_check'];
if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
if (reference && _release) {
if (exists_check) {
var check_flag = 0;
foreach var check (exists_check) {
if (!rpm_exists(release:_release, rpm:check)) continue;
check_flag++;
}
if (!check_flag) continue;
}
if (rpm_check(release:_release, sp:sp, cpu:_cpu, reference:reference, rpm_spec_vers_cmp:rpm_spec_vers_cmp)) flag++;
}
}
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_WARNING,
extra : rpm_report_get()
);
exit(0);
}
else
{
var tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'netty / netty-javadoc / netty-poms / netty-tcnative / etc');
}