5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.8 High
AI Score
Confidence
High
0.007 Low
EPSS
Percentile
80.5%
The remote Redhat Enterprise Linux 7 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2021:1384 advisory.
Network Security Services (NSS) is a set of libraries designed to support the cross-platform development of security-enabled client and server applications.
Security Fix(es):
* nss: TLS 1.3 CCS flood remote DoS Attack (CVE-2020-25648)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Bug Fix(es):
* FTBFS: Paypal Cert expired (BZ#1883973)
* FTBFS: IKE CLASS_1563 fails gtest (BZ#1884793)
* Cannot compile code with nss headers and -Werror=strict-prototypes (BZ#1885321)
* CA HSM ncipher token disabled after RHEL-7.9 update (BZ#1932193)
Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.
Note that Nessus has not tested for this issue but has instead relied only on the application’s self-reported version number.
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2021:1384. The text
# itself is copyright (C) Red Hat, Inc.
##
include('compat.inc');
if (description)
{
script_id(149029);
script_version("1.9");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/06/03");
script_cve_id("CVE-2020-25648");
script_xref(name:"RHSA", value:"2021:1384");
script_name(english:"RHEL 7 : nss (RHSA-2021:1384)");
script_set_attribute(attribute:"synopsis", value:
"The remote Red Hat host is missing a security update for nss.");
script_set_attribute(attribute:"description", value:
"The remote Redhat Enterprise Linux 7 host has packages installed that are affected by a vulnerability as referenced in
the RHSA-2021:1384 advisory.
Network Security Services (NSS) is a set of libraries designed to support the cross-platform development
of security-enabled client and server applications.
Security Fix(es):
* nss: TLS 1.3 CCS flood remote DoS Attack (CVE-2020-25648)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and
other related information, refer to the CVE page(s) listed in the References section.
Bug Fix(es):
* FTBFS: Paypal Cert expired (BZ#1883973)
* FTBFS: IKE CLASS_1563 fails gtest (BZ#1884793)
* Cannot compile code with nss headers and -Werror=strict-prototypes (BZ#1885321)
* CA HSM ncipher token disabled after RHEL-7.9 update (BZ#1932193)
Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
# https://access.redhat.com/security/data/csaf/v2/advisories/2021/rhsa-2021_1384.json
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?7cd94f8a");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/updates/classification/#moderate");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2021:1384");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1883973");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1884793");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1885321");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1887319");
script_set_attribute(attribute:"solution", value:
"Update the RHEL nss package based on the guidance in RHSA-2021:1384.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/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:N/I:N/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-2020-25648");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_cwe_id(770);
script_set_attribute(attribute:"vendor_severity", value:"Moderate");
script_set_attribute(attribute:"vuln_publication_date", value:"2020/10/20");
script_set_attribute(attribute:"patch_publication_date", value:"2021/04/27");
script_set_attribute(attribute:"plugin_publication_date", value:"2021/04/27");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:nss");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:nss-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:nss-pkcs11-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:nss-sysinit");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:nss-tools");
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) 2021-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl", "redhat_repos.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 = [
{
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'content/dist/rhel-alt/server/7/7Server/power9/ppc64le/optional/source/SRPMS',
'content/dist/rhel-alt/server/7/7Server/power9/ppc64le/os',
'content/dist/rhel-alt/server/7/7Server/power9/ppc64le/source/SRPMS',
'content/dist/rhel-alt/server/7/7Server/system-z-a/s390x/debug',
'content/dist/rhel-alt/server/7/7Server/system-z-a/s390x/optional/debug',
'content/dist/rhel-alt/server/7/7Server/system-z-a/s390x/optional/os',
'content/dist/rhel-alt/server/7/7Server/system-z-a/s390x/optional/source/SRPMS',
'content/dist/rhel-alt/server/7/7Server/system-z-a/s390x/os',
'content/dist/rhel-alt/server/7/7Server/system-z-a/s390x/source/SRPMS',
'content/dist/rhel/client/7/7.9/x86_64/debug',
'content/dist/rhel/client/7/7.9/x86_64/optional/debug',
'content/dist/rhel/client/7/7.9/x86_64/optional/os',
'content/dist/rhel/client/7/7.9/x86_64/optional/source/SRPMS',
'content/dist/rhel/client/7/7.9/x86_64/os',
'content/dist/rhel/client/7/7.9/x86_64/source/SRPMS',
'content/dist/rhel/client/7/7Client/x86_64/debug',
'content/dist/rhel/client/7/7Client/x86_64/optional/debug',
'content/dist/rhel/client/7/7Client/x86_64/optional/os',
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'content/dist/rhel/client/7/7Client/x86_64/os',
'content/dist/rhel/client/7/7Client/x86_64/source/SRPMS',
'content/dist/rhel/computenode/7/7.9/x86_64/optional/debug',
'content/dist/rhel/computenode/7/7.9/x86_64/optional/os',
'content/dist/rhel/computenode/7/7.9/x86_64/optional/source/SRPMS',
'content/dist/rhel/computenode/7/7ComputeNode/x86_64/debug',
'content/dist/rhel/computenode/7/7ComputeNode/x86_64/optional/debug',
'content/dist/rhel/computenode/7/7ComputeNode/x86_64/optional/os',
'content/dist/rhel/computenode/7/7ComputeNode/x86_64/optional/source/SRPMS',
'content/dist/rhel/computenode/7/7ComputeNode/x86_64/os',
'content/dist/rhel/computenode/7/7ComputeNode/x86_64/source/SRPMS',
'content/dist/rhel/power-le/7/7.9/ppc64le/debug',
'content/dist/rhel/power-le/7/7.9/ppc64le/highavailability/debug',
'content/dist/rhel/power-le/7/7.9/ppc64le/highavailability/os',
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'content/dist/rhel/power-le/7/7.9/ppc64le/os',
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'content/dist/rhel/power-le/7/7.9/ppc64le/source/SRPMS',
'content/dist/rhel/power-le/7/7Server/ppc64le/debug',
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'content/fastrack/rhel/workstation/7/x86_64/os',
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],
'pkgs': [
{'reference':'nss-3.53.1-7.el7_9', 'cpu':'i686', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'nss-3.53.1-7.el7_9', 'cpu':'ppc', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'nss-3.53.1-7.el7_9', 'cpu':'ppc64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'nss-3.53.1-7.el7_9', 'cpu':'ppc64le', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'nss-3.53.1-7.el7_9', 'cpu':'s390', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'nss-3.53.1-7.el7_9', 'cpu':'s390x', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'nss-3.53.1-7.el7_9', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'nss-devel-3.53.1-7.el7_9', 'cpu':'i686', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'nss-devel-3.53.1-7.el7_9', 'cpu':'ppc', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'nss-devel-3.53.1-7.el7_9', 'cpu':'ppc64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'nss-devel-3.53.1-7.el7_9', 'cpu':'ppc64le', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'nss-devel-3.53.1-7.el7_9', 'cpu':'s390', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'nss-devel-3.53.1-7.el7_9', 'cpu':'s390x', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'nss-devel-3.53.1-7.el7_9', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'nss-pkcs11-devel-3.53.1-7.el7_9', 'cpu':'i686', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'nss-pkcs11-devel-3.53.1-7.el7_9', 'cpu':'ppc', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'nss-pkcs11-devel-3.53.1-7.el7_9', 'cpu':'ppc64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'nss-pkcs11-devel-3.53.1-7.el7_9', 'cpu':'ppc64le', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'nss-pkcs11-devel-3.53.1-7.el7_9', 'cpu':'s390', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'nss-pkcs11-devel-3.53.1-7.el7_9', 'cpu':'s390x', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'nss-pkcs11-devel-3.53.1-7.el7_9', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'nss-sysinit-3.53.1-7.el7_9', 'cpu':'ppc64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'nss-sysinit-3.53.1-7.el7_9', 'cpu':'ppc64le', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'nss-sysinit-3.53.1-7.el7_9', 'cpu':'s390x', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'nss-sysinit-3.53.1-7.el7_9', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'nss-tools-3.53.1-7.el7_9', 'cpu':'ppc64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'nss-tools-3.53.1-7.el7_9', 'cpu':'ppc64le', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'nss-tools-3.53.1-7.el7_9', 'cpu':'s390x', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'nss-tools-3.53.1-7.el7_9', 'cpu':'x86_64', '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_WARNING,
extra : extra
);
exit(0);
}
else
{
var tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'nss / nss-devel / nss-pkcs11-devel / nss-sysinit / nss-tools');
}
Vendor | Product | Version | CPE |
---|---|---|---|
redhat | enterprise_linux | nss-pkcs11-devel | p-cpe:/a:redhat:enterprise_linux:nss-pkcs11-devel |
redhat | enterprise_linux | nss-devel | p-cpe:/a:redhat:enterprise_linux:nss-devel |
redhat | enterprise_linux | 7 | cpe:/o:redhat:enterprise_linux:7 |
redhat | enterprise_linux | nss-tools | p-cpe:/a:redhat:enterprise_linux:nss-tools |
redhat | enterprise_linux | nss-sysinit | p-cpe:/a:redhat:enterprise_linux:nss-sysinit |
redhat | enterprise_linux | nss | p-cpe:/a:redhat:enterprise_linux:nss |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25648
www.nessus.org/u?7cd94f8a
access.redhat.com/errata/RHSA-2021:1384
access.redhat.com/security/updates/classification/#moderate
bugzilla.redhat.com/show_bug.cgi?id=1883973
bugzilla.redhat.com/show_bug.cgi?id=1884793
bugzilla.redhat.com/show_bug.cgi?id=1885321
bugzilla.redhat.com/show_bug.cgi?id=1887319
5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.8 High
AI Score
Confidence
High
0.007 Low
EPSS
Percentile
80.5%