The remote SUSE Linux SLES11 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:14714-1 advisory.
In BIND 9.8.5 -> 9.8.8, 9.9.3 -> 9.11.29, 9.12.0 -> 9.16.13, and versions BIND 9.9.3-S1 -> 9.11.29-S1 and 9.16.8-S1 -> 9.16.13-S1 of BIND 9 Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.11 of the BIND 9.17 development branch, when a vulnerable version of named receives a malformed IXFR triggering the flaw described above, the named process will terminate due to a failed assertion the next time the transferred secondary zone is refreshed. (CVE-2021-25214)
In BIND 9.0.0 -> 9.11.29, 9.12.0 -> 9.16.13, and versions BIND 9.9.3-S1 -> 9.11.29-S1 and 9.16.8-S1 -> 9.16.13-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.11 of the BIND 9.17 development branch, when a vulnerable version of named receives a query for a record triggering the flaw described above, the named process will terminate due to a failed assertion check. The vulnerability affects all currently maintained BIND 9 branches (9.11, 9.11-S, 9.16, 9.16-S, 9.17) as well as all other versions of BIND 9. (CVE-2021-25215)
In BIND 9.5.0 -> 9.11.29, 9.12.0 -> 9.16.13, and versions BIND 9.11.3-S1 -> 9.11.29-S1 and 9.16.8-S1 -> 9.16.13-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.1 of the BIND 9.17 development branch, BIND servers are vulnerable if they are running an affected version and are configured to use GSS-TSIG features. In a configuration which uses BIND’s default settings the vulnerable code path is not exposed, but a server can be rendered vulnerable by explicitly setting values for the tkey-gssapi-keytab or tkey-gssapi-credential configuration options. Although the default configuration is not vulnerable, GSS-TSIG is frequently used in networks where BIND is integrated with Samba, as well as in mixed-server environments that combine BIND servers with Active Directory domain controllers. For servers that meet these conditions, the ISC SPNEGO implementation is vulnerable to various attacks, depending on the CPU architecture for which BIND was built: For named binaries compiled for 64-bit platforms, this flaw can be used to trigger a buffer over-read, leading to a server crash. For named binaries compiled for 32-bit platforms, this flaw can be used to trigger a server crash due to a buffer overflow and possibly also to achieve remote code execution. We have determined that standard SPNEGO implementations are available in the MIT and Heimdal Kerberos libraries, which support a broad range of operating systems, rendering the ISC implementation unnecessary and obsolete. Therefore, to reduce the attack surface for BIND users, we will be removing the ISC SPNEGO implementation in the April releases of BIND 9.11 and 9.16 (it had already been dropped from BIND 9.17). We would not normally remove something from a stable ESV (Extended Support Version) of BIND, but since system libraries can replace the ISC SPNEGO implementation, we have made an exception in this case for reasons of stability and security. (CVE-2021-25216)
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 70300
##
# (C) Tenable Network Security, Inc.
#
# The package checks in this plugin were extracted from
# SUSE update advisory SUSE-SU-2021:14714-1. The text itself
# is copyright (C) SUSE.
##
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(150646);
script_version("1.3");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/11/09");
script_cve_id("CVE-2021-25214", "CVE-2021-25215", "CVE-2021-25216");
script_xref(name:"SuSE", value:"SUSE-SU-2021:14714-1");
script_xref(name:"IAVA", value:"2021-A-0206-S");
script_name(english:"SUSE SLES11 Security Update : bind (SUSE-SU-2021:14714-1)");
script_set_attribute(attribute:"synopsis", value:
"The remote SUSE host is missing one or more security updates.");
script_set_attribute(attribute:"description", value:
"The remote SUSE Linux SLES11 host has packages installed that are affected by multiple vulnerabilities as referenced in
the SUSE-SU-2021:14714-1 advisory.
- In BIND 9.8.5 -> 9.8.8, 9.9.3 -> 9.11.29, 9.12.0 -> 9.16.13, and versions BIND 9.9.3-S1 -> 9.11.29-S1 and
9.16.8-S1 -> 9.16.13-S1 of BIND 9 Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.11
of the BIND 9.17 development branch, when a vulnerable version of named receives a malformed IXFR
triggering the flaw described above, the named process will terminate due to a failed assertion the next
time the transferred secondary zone is refreshed. (CVE-2021-25214)
- In BIND 9.0.0 -> 9.11.29, 9.12.0 -> 9.16.13, and versions BIND 9.9.3-S1 -> 9.11.29-S1 and 9.16.8-S1 ->
9.16.13-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.11 of the BIND
9.17 development branch, when a vulnerable version of named receives a query for a record triggering the
flaw described above, the named process will terminate due to a failed assertion check. The vulnerability
affects all currently maintained BIND 9 branches (9.11, 9.11-S, 9.16, 9.16-S, 9.17) as well as all other
versions of BIND 9. (CVE-2021-25215)
- In BIND 9.5.0 -> 9.11.29, 9.12.0 -> 9.16.13, and versions BIND 9.11.3-S1 -> 9.11.29-S1 and 9.16.8-S1 ->
9.16.13-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.1 of the BIND
9.17 development branch, BIND servers are vulnerable if they are running an affected version and are
configured to use GSS-TSIG features. In a configuration which uses BIND's default settings the vulnerable
code path is not exposed, but a server can be rendered vulnerable by explicitly setting values for the
tkey-gssapi-keytab or tkey-gssapi-credential configuration options. Although the default configuration is
not vulnerable, GSS-TSIG is frequently used in networks where BIND is integrated with Samba, as well as in
mixed-server environments that combine BIND servers with Active Directory domain controllers. For servers
that meet these conditions, the ISC SPNEGO implementation is vulnerable to various attacks, depending on
the CPU architecture for which BIND was built: For named binaries compiled for 64-bit platforms, this flaw
can be used to trigger a buffer over-read, leading to a server crash. For named binaries compiled for
32-bit platforms, this flaw can be used to trigger a server crash due to a buffer overflow and possibly
also to achieve remote code execution. We have determined that standard SPNEGO implementations are
available in the MIT and Heimdal Kerberos libraries, which support a broad range of operating systems,
rendering the ISC implementation unnecessary and obsolete. Therefore, to reduce the attack surface for
BIND users, we will be removing the ISC SPNEGO implementation in the April releases of BIND 9.11 and 9.16
(it had already been dropped from BIND 9.17). We would not normally remove something from a stable ESV
(Extended Support Version) of BIND, but since system libraries can replace the ISC SPNEGO implementation,
we have made an exception in this case for reasons of stability and security. (CVE-2021-25216)
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/1185345");
# https://lists.suse.com/pipermail/sle-security-updates/2021-May/008726.html
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?804e6f1b");
script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-25214");
script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-25215");
script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-25216");
script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-25216");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_set_attribute(attribute:"vuln_publication_date", value:"2021/04/28");
script_set_attribute(attribute:"patch_publication_date", value:"2021/05/04");
script_set_attribute(attribute:"plugin_publication_date", value:"2021/06/10");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:bind");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:bind-chrootenv");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:bind-doc");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:bind-libs");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:bind-libs-32bit");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:bind-utils");
script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:11");
script_set_attribute(attribute:"stig_severity", value:"I");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"SuSE Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2021 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('audit.inc');
include('global_settings.inc');
include('misc_func.inc');
include('rpm.inc');
if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/SuSE/release");
if (isnull(release) || release !~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "SUSE");
os_ver = pregmatch(pattern: "^(SLE(S|D)\d+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'SUSE');
os_ver = os_ver[1];
if (! preg(pattern:"^(SLES11)$", string:os_ver)) audit(AUDIT_OS_NOT, 'SUSE SLES11', 'SUSE ' + os_ver);
if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'SUSE ' + os_ver, cpu);
sp = get_kb_item("Host/SuSE/patchlevel");
if (isnull(sp)) sp = "0";
if (os_ver == "SLES11" && (! preg(pattern:"^(4)$", string:sp))) audit(AUDIT_OS_NOT, "SLES11 SP4", os_ver + " SP" + sp);
pkgs = [
{'reference':'bind-9.9.6P1-0.51.26', 'sp':'4', 'release':'SLES11', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'SLES_SAP-release-11.4'},
{'reference':'bind-chrootenv-9.9.6P1-0.51.26', 'sp':'4', 'release':'SLES11', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'SLES_SAP-release-11.4'},
{'reference':'bind-doc-9.9.6P1-0.51.26', 'sp':'4', 'release':'SLES11', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'SLES_SAP-release-11.4'},
{'reference':'bind-libs-32bit-9.9.6P1-0.51.26', 'sp':'4', 'cpu':'s390x', 'release':'SLES11', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'SLES_SAP-release-11.4'},
{'reference':'bind-libs-32bit-9.9.6P1-0.51.26', 'sp':'4', 'cpu':'x86_64', 'release':'SLES11', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'SLES_SAP-release-11.4'},
{'reference':'bind-libs-9.9.6P1-0.51.26', 'sp':'4', 'release':'SLES11', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'SLES_SAP-release-11.4'},
{'reference':'bind-utils-9.9.6P1-0.51.26', 'sp':'4', 'release':'SLES11', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'SLES_SAP-release-11.4'},
{'reference':'bind-9.9.6P1-0.51.26', 'sp':'4', 'release':'SLES11', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sles-release-11.4'},
{'reference':'bind-chrootenv-9.9.6P1-0.51.26', 'sp':'4', 'release':'SLES11', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sles-release-11.4'},
{'reference':'bind-doc-9.9.6P1-0.51.26', 'sp':'4', 'release':'SLES11', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sles-release-11.4'},
{'reference':'bind-libs-32bit-9.9.6P1-0.51.26', 'sp':'4', 'cpu':'s390x', 'release':'SLES11', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sles-release-11.4'},
{'reference':'bind-libs-32bit-9.9.6P1-0.51.26', 'sp':'4', 'cpu':'x86_64', 'release':'SLES11', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sles-release-11.4'},
{'reference':'bind-libs-9.9.6P1-0.51.26', 'sp':'4', 'release':'SLES11', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sles-release-11.4'},
{'reference':'bind-utils-9.9.6P1-0.51.26', 'sp':'4', 'release':'SLES11', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sles-release-11.4'}
];
flag = 0;
foreach package_array ( pkgs ) {
reference = NULL;
release = NULL;
sp = NULL;
cpu = NULL;
exists_check = NULL;
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 && exists_check) {
if (rpm_exists(release:release, rpm:exists_check) && rpm_check(release:release, sp:sp, cpu:cpu, reference:reference, rpm_spec_vers_cmp:rpm_spec_vers_cmp)) flag++;
}
else if (reference && release) {
if (rpm_check(release:release, sp:sp, cpu:cpu, reference:reference, rpm_spec_vers_cmp:rpm_spec_vers_cmp)) flag++;
}
}
if (flag)
{
ltss_plugin_caveat = '\n' +
'NOTE: This vulnerability check contains fixes that apply to\n' +
'packages only available in SUSE Enterprise Linux Server LTSS\n' +
'repositories. Access to these package security updates require\n' +
'a paid SUSE LTSS subscription.\n';
security_report_v4(
port : 0,
severity : SECURITY_WARNING,
extra : rpm_report_get() + ltss_plugin_caveat
);
exit(0);
}
else
{
tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'bind / bind-chrootenv / bind-doc / bind-libs / bind-libs-32bit / etc');
}
Vendor | Product | Version | CPE |
---|---|---|---|
novell | suse_linux | bind | p-cpe:/a:novell:suse_linux:bind |
novell | suse_linux | bind-chrootenv | p-cpe:/a:novell:suse_linux:bind-chrootenv |
novell | suse_linux | bind-doc | p-cpe:/a:novell:suse_linux:bind-doc |
novell | suse_linux | bind-libs | p-cpe:/a:novell:suse_linux:bind-libs |
novell | suse_linux | bind-libs-32bit | p-cpe:/a:novell:suse_linux:bind-libs-32bit |
novell | suse_linux | bind-utils | p-cpe:/a:novell:suse_linux:bind-utils |
novell | suse_linux | 11 | cpe:/o:novell:suse_linux:11 |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-25214
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-25215
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-25216
www.nessus.org/u?804e6f1b
bugzilla.suse.com/1185345
www.suse.com/security/cve/CVE-2021-25214
www.suse.com/security/cve/CVE-2021-25215
www.suse.com/security/cve/CVE-2021-25216