7.8 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:N/I:N/A:C
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.1 High
AI Score
Confidence
Low
0.107 Low
EPSS
Percentile
95.1%
The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2018:0805 advisory.
glibc: denial of service in getnetbyname function (CVE-2014-9402)
glibc: DNS resolver NULL pointer dereference with crafted record type (CVE-2015-5180)
glibc: Fragmentation attacks possible when EDNS0 is enabled (CVE-2017-12132)
glibc: Buffer overflow in glob with GLOB_TILDE (CVE-2017-15670)
glibc: Buffer overflow during unescaping of user names with the ~ operator (CVE-2017-15804)
glibc: realpath() buffer underflow when getcwd() returns relative path allows privilege escalation (CVE-2018-1000001)
Note that Nessus has not tested for these issues but has instead relied only on the application’s self-reported version number.
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2018:0805. The text
# itself is copyright (C) Red Hat, Inc.
#
include('compat.inc');
if (description)
{
script_id(108985);
script_version("1.10");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/04/27");
script_cve_id(
"CVE-2014-9402",
"CVE-2015-5180",
"CVE-2017-12132",
"CVE-2017-15670",
"CVE-2017-15804",
"CVE-2018-1000001"
);
script_xref(name:"RHSA", value:"2018:0805");
script_name(english:"RHEL 7 : glibc (RHSA-2018:0805)");
script_set_attribute(attribute:"synopsis", value:
"The remote Red Hat host is missing one or more security updates.");
script_set_attribute(attribute:"description", value:
"The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as
referenced in the RHSA-2018:0805 advisory.
- glibc: denial of service in getnetbyname function (CVE-2014-9402)
- glibc: DNS resolver NULL pointer dereference with crafted record type (CVE-2015-5180)
- glibc: Fragmentation attacks possible when EDNS0 is enabled (CVE-2017-12132)
- glibc: Buffer overflow in glob with GLOB_TILDE (CVE-2017-15670)
- glibc: Buffer overflow during unescaping of user names with the ~ operator (CVE-2017-15804)
- glibc: realpath() buffer underflow when getcwd() returns relative path allows privilege escalation
(CVE-2018-1000001)
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
# https://access.redhat.com/security/data/csaf/v2/advisories/2018/rhsa-2018_0805.json
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?d6692026");
# https://access.redhat.com/documentation/en-US/red_hat_enterprise_linux/7/html/7.5_release_notes/index.html
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?d74c2895");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2018:0805");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/updates/classification/#moderate");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1175369");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1249603");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1348000");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1349962");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1349964");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1372305");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1398413");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1432085");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1435615");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1440250");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1443236");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1445644");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1445781");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1447556");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1448822");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1452034");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1463692");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1468807");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1471111");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1477529");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1482988");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1484034");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1504804");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1505298");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1508895");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1527904");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1528418");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1529982");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1533836");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=677316");
script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
script_set_cvss_temporal_vector("CVSS2#E:F/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:F/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2017-15804");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"metasploit_name", value:'glibc "realpath()" Privilege Escalation');
script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");
script_cwe_id(122, 476, 835);
script_set_attribute(attribute:"vendor_severity", value:"Moderate");
script_set_attribute(attribute:"vuln_publication_date", value:"2015/02/24");
script_set_attribute(attribute:"patch_publication_date", value:"2018/04/10");
script_set_attribute(attribute:"plugin_publication_date", value:"2018/04/11");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:glibc");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:glibc-common");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:glibc-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:glibc-headers");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:glibc-static");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:glibc-utils");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:nscd");
script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Red Hat Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2018-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("redhat_repos.nasl", "ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/cpu");
exit(0);
}
include('rpm.inc');
include('rhel.inc');
if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item('Host/RedHat/release');
if (isnull(os_release) || 'Red Hat' >!< os_release) audit(AUDIT_OS_NOT, 'Red Hat');
var os_ver = pregmatch(pattern: "Red Hat Enterprise Linux.*release ([0-9]+(\.[0-9]+)?)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'Red Hat');
os_ver = os_ver[1];
if (!rhel_check_release(operator: 'ge', os_version: os_ver, rhel_version: '7')) audit(AUDIT_OS_NOT, 'Red Hat 7.x', 'Red Hat ' + os_ver);
if (!get_kb_item('Host/RedHat/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 && 'ppc' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Red Hat', cpu);
var constraints = [
{
'repo_relative_urls': [
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'content/dist/rhel-alt/server/7/7Server/armv8-a/aarch64/optional/os',
'content/dist/rhel-alt/server/7/7Server/armv8-a/aarch64/optional/source/SRPMS',
'content/dist/rhel-alt/server/7/7Server/armv8-a/aarch64/os',
'content/dist/rhel-alt/server/7/7Server/armv8-a/aarch64/source/SRPMS',
'content/dist/rhel-alt/server/7/7Server/power9/ppc64le/debug',
'content/dist/rhel-alt/server/7/7Server/power9/ppc64le/optional/debug',
'content/dist/rhel-alt/server/7/7Server/power9/ppc64le/optional/os',
'content/dist/rhel-alt/server/7/7Server/power9/ppc64le/optional/source/SRPMS',
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'content/dist/rhel-alt/server/7/7Server/system-z-a/s390x/source/SRPMS',
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'content/dist/rhel/client/7/7Client/x86_64/source/SRPMS',
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'content/dist/rhel/computenode/7/7ComputeNode/x86_64/debug',
'content/dist/rhel/computenode/7/7ComputeNode/x86_64/optional/debug',
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'content/dist/rhel/power-le/7/7.9/ppc64le/debug',
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'content/dist/rhel/power-le/7/7Server/ppc64le/debug',
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'content/fastrack/rhel/server/7/x86_64/optional/debug',
'content/fastrack/rhel/server/7/x86_64/optional/os',
'content/fastrack/rhel/server/7/x86_64/optional/source/SRPMS',
'content/fastrack/rhel/server/7/x86_64/os',
'content/fastrack/rhel/server/7/x86_64/resilientstorage/debug',
'content/fastrack/rhel/server/7/x86_64/resilientstorage/os',
'content/fastrack/rhel/server/7/x86_64/resilientstorage/source/SRPMS',
'content/fastrack/rhel/server/7/x86_64/source/SRPMS',
'content/fastrack/rhel/system-z/7/s390x/debug',
'content/fastrack/rhel/system-z/7/s390x/optional/debug',
'content/fastrack/rhel/system-z/7/s390x/optional/os',
'content/fastrack/rhel/system-z/7/s390x/optional/source/SRPMS',
'content/fastrack/rhel/system-z/7/s390x/os',
'content/fastrack/rhel/system-z/7/s390x/source/SRPMS',
'content/fastrack/rhel/workstation/7/x86_64/debug',
'content/fastrack/rhel/workstation/7/x86_64/optional/debug',
'content/fastrack/rhel/workstation/7/x86_64/optional/os',
'content/fastrack/rhel/workstation/7/x86_64/optional/source/SRPMS',
'content/fastrack/rhel/workstation/7/x86_64/os',
'content/fastrack/rhel/workstation/7/x86_64/source/SRPMS'
],
'pkgs': [
{'reference':'glibc-2.17-222.el7', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'glibc-common-2.17-222.el7', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'glibc-devel-2.17-222.el7', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'glibc-headers-2.17-222.el7', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'glibc-static-2.17-222.el7', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'glibc-utils-2.17-222.el7', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'nscd-2.17-222.el7', 'release':'7', 'rpm_spec_vers_cmp':TRUE}
]
}
];
var applicable_repo_urls = rhel_determine_applicable_repository_urls(constraints:constraints);
if(applicable_repo_urls == RHEL_REPOS_NO_OVERLAP_MESSAGE) exit(0, RHEL_REPO_NOT_ENABLED);
var flag = 0;
foreach var constraint_array ( constraints ) {
var repo_relative_urls = NULL;
if (!empty_or_null(constraint_array['repo_relative_urls'])) repo_relative_urls = constraint_array['repo_relative_urls'];
foreach var pkg ( constraint_array['pkgs'] ) {
var reference = NULL;
var _release = NULL;
var sp = NULL;
var _cpu = NULL;
var el_string = NULL;
var rpm_spec_vers_cmp = NULL;
var epoch = NULL;
var allowmaj = NULL;
var exists_check = NULL;
var cves = NULL;
if (!empty_or_null(pkg['reference'])) reference = pkg['reference'];
if (!empty_or_null(pkg['release'])) _release = 'RHEL' + pkg['release'];
if (!empty_or_null(pkg['sp'])) sp = pkg['sp'];
if (!empty_or_null(pkg['cpu'])) _cpu = pkg['cpu'];
if (!empty_or_null(pkg['el_string'])) el_string = pkg['el_string'];
if (!empty_or_null(pkg['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = pkg['rpm_spec_vers_cmp'];
if (!empty_or_null(pkg['epoch'])) epoch = pkg['epoch'];
if (!empty_or_null(pkg['allowmaj'])) allowmaj = pkg['allowmaj'];
if (!empty_or_null(pkg['exists_check'])) exists_check = pkg['exists_check'];
if (!empty_or_null(pkg['cves'])) cves = pkg['cves'];
if (reference &&
_release &&
rhel_decide_repo_relative_url_check(required_repo_url_list:repo_relative_urls) &&
(applicable_repo_urls || (!exists_check || rpm_exists(release:_release, rpm:exists_check))) &&
rpm_check(release:_release, sp:sp, cpu:_cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj, cves:cves)) flag++;
}
}
if (flag)
{
var extra = NULL;
if (isnull(applicable_repo_urls) || !applicable_repo_urls) extra = rpm_report_get() + redhat_report_repo_caveat();
else extra = rpm_report_get();
security_report_v4(
port : 0,
severity : SECURITY_HOLE,
extra : extra
);
exit(0);
}
else
{
var tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'glibc / glibc-common / glibc-devel / glibc-headers / glibc-static / etc');
}
Vendor | Product | Version | CPE |
---|---|---|---|
redhat | enterprise_linux | glibc | p-cpe:/a:redhat:enterprise_linux:glibc |
redhat | enterprise_linux | glibc-common | p-cpe:/a:redhat:enterprise_linux:glibc-common |
redhat | enterprise_linux | glibc-devel | p-cpe:/a:redhat:enterprise_linux:glibc-devel |
redhat | enterprise_linux | glibc-headers | p-cpe:/a:redhat:enterprise_linux:glibc-headers |
redhat | enterprise_linux | glibc-static | p-cpe:/a:redhat:enterprise_linux:glibc-static |
redhat | enterprise_linux | glibc-utils | p-cpe:/a:redhat:enterprise_linux:glibc-utils |
redhat | enterprise_linux | nscd | p-cpe:/a:redhat:enterprise_linux:nscd |
redhat | enterprise_linux | 7 | cpe:/o:redhat:enterprise_linux:7 |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-9402
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-5180
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-12132
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-15670
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-15804
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1000001
www.nessus.org/u?d6692026
www.nessus.org/u?d74c2895
access.redhat.com/errata/RHSA-2018:0805
access.redhat.com/security/updates/classification/#moderate
bugzilla.redhat.com/show_bug.cgi?id=1175369
bugzilla.redhat.com/show_bug.cgi?id=1249603
bugzilla.redhat.com/show_bug.cgi?id=1348000
bugzilla.redhat.com/show_bug.cgi?id=1349962
bugzilla.redhat.com/show_bug.cgi?id=1349964
bugzilla.redhat.com/show_bug.cgi?id=1372305
bugzilla.redhat.com/show_bug.cgi?id=1398413
bugzilla.redhat.com/show_bug.cgi?id=1432085
bugzilla.redhat.com/show_bug.cgi?id=1435615
bugzilla.redhat.com/show_bug.cgi?id=1440250
bugzilla.redhat.com/show_bug.cgi?id=1443236
bugzilla.redhat.com/show_bug.cgi?id=1445644
bugzilla.redhat.com/show_bug.cgi?id=1445781
bugzilla.redhat.com/show_bug.cgi?id=1447556
bugzilla.redhat.com/show_bug.cgi?id=1448822
bugzilla.redhat.com/show_bug.cgi?id=1452034
bugzilla.redhat.com/show_bug.cgi?id=1463692
bugzilla.redhat.com/show_bug.cgi?id=1468807
bugzilla.redhat.com/show_bug.cgi?id=1471111
bugzilla.redhat.com/show_bug.cgi?id=1477529
bugzilla.redhat.com/show_bug.cgi?id=1482988
bugzilla.redhat.com/show_bug.cgi?id=1484034
bugzilla.redhat.com/show_bug.cgi?id=1504804
bugzilla.redhat.com/show_bug.cgi?id=1505298
bugzilla.redhat.com/show_bug.cgi?id=1508895
bugzilla.redhat.com/show_bug.cgi?id=1527904
bugzilla.redhat.com/show_bug.cgi?id=1528418
bugzilla.redhat.com/show_bug.cgi?id=1529982
bugzilla.redhat.com/show_bug.cgi?id=1533836
bugzilla.redhat.com/show_bug.cgi?id=677316
7.8 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:N/I:N/A:C
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.1 High
AI Score
Confidence
Low
0.107 Low
EPSS
Percentile
95.1%