6.2 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.2 High
AI Score
Confidence
High
0.0004 Low
EPSS
Percentile
9.0%
The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2024:2433 advisory.
Avahi is an implementation of the DNS Service Discovery and Multicast DNS specifications for Zero Configuration Networking. It facilitates service discovery on a local network. Avahi and Avahi-aware applications allow you to plug your computer into a network and, with no configuration, view other people to chat with, view printers to print with, and find shared files on other computers.
Security Fix(es):
* avahi: Reachable assertion in avahi_dns_packet_append_record (CVE-2023-38469)
* avahi: Reachable assertion in avahi_escape_label (CVE-2023-38470)
* avahi: Reachable assertion in dbus_set_host_name (CVE-2023-38471)
* avahi: Reachable assertion in avahi_rdata_parse (CVE-2023-38472)
* avahi: Reachable assertion in avahi_alternative_host_name (CVE-2023-38473)
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.
Additional Changes:
For detailed information on changes in this release, see the Red Hat Enterprise Linux 9.4 Release Notes linked from the References section.
Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.
Note that Nessus has not tested for these issues but has instead relied only on the application’s self-reported version number.
#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2024:2433. The text
# itself is copyright (C) Red Hat, Inc.
##
include('compat.inc');
if (description)
{
script_id(194757);
script_version("1.2");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/06/03");
script_cve_id(
"CVE-2023-38469",
"CVE-2023-38470",
"CVE-2023-38471",
"CVE-2023-38472",
"CVE-2023-38473"
);
script_xref(name:"RHSA", value:"2024:2433");
script_name(english:"RHEL 9 : avahi (RHSA-2024:2433)");
script_set_attribute(attribute:"synopsis", value:
"The remote Red Hat host is missing one or more security updates for avahi.");
script_set_attribute(attribute:"description", value:
"The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as
referenced in the RHSA-2024:2433 advisory.
Avahi is an implementation of the DNS Service Discovery and Multicast DNS specifications for Zero
Configuration Networking. It facilitates service discovery on a local network. Avahi and Avahi-aware
applications allow you to plug your computer into a network and, with no configuration, view other people
to chat with, view printers to print with, and find shared files on other computers.
Security Fix(es):
* avahi: Reachable assertion in avahi_dns_packet_append_record (CVE-2023-38469)
* avahi: Reachable assertion in avahi_escape_label (CVE-2023-38470)
* avahi: Reachable assertion in dbus_set_host_name (CVE-2023-38471)
* avahi: Reachable assertion in avahi_rdata_parse (CVE-2023-38472)
* avahi: Reachable assertion in avahi_alternative_host_name (CVE-2023-38473)
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.
Additional Changes:
For detailed information on changes in this release, see the Red Hat Enterprise Linux 9.4 Release Notes
linked from the References section.
Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.
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/2024/rhsa-2024_2433.json
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?5f004f1c");
# https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/9/html/9.4_release_notes/index
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?d922e0bf");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2024:2433");
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=2191687");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2191690");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2191691");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2191692");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2191694");
script_set_attribute(attribute:"solution", value:
"Update the RHEL avahi package based on the guidance in RHSA-2024:2433.");
script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:S/C:N/I:N/A:C");
script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/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-2023-38473");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_cwe_id(617);
script_set_attribute(attribute:"vendor_severity", value:"Moderate");
script_set_attribute(attribute:"vuln_publication_date", value:"2023/08/03");
script_set_attribute(attribute:"patch_publication_date", value:"2024/04/30");
script_set_attribute(attribute:"plugin_publication_date", value:"2024/04/30");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:9");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:avahi");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:avahi-compat-howl");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:avahi-compat-howl-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:avahi-compat-libdns_sd");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:avahi-compat-libdns_sd-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:avahi-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:avahi-glib");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:avahi-glib-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:avahi-libs");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:avahi-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) 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: '9')) audit(AUDIT_OS_NOT, 'Red Hat 9.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': [
'content/dist/rhel9/9.1/aarch64/appstream/debug',
'content/dist/rhel9/9.1/aarch64/appstream/os',
'content/dist/rhel9/9.1/aarch64/appstream/source/SRPMS',
'content/dist/rhel9/9.1/aarch64/baseos/debug',
'content/dist/rhel9/9.1/aarch64/baseos/os',
'content/dist/rhel9/9.1/aarch64/baseos/source/SRPMS',
'content/dist/rhel9/9.1/aarch64/codeready-builder/debug',
'content/dist/rhel9/9.1/aarch64/codeready-builder/os',
'content/dist/rhel9/9.1/aarch64/codeready-builder/source/SRPMS',
'content/dist/rhel9/9.1/ppc64le/appstream/debug',
'content/dist/rhel9/9.1/ppc64le/appstream/os',
'content/dist/rhel9/9.1/ppc64le/appstream/source/SRPMS',
'content/dist/rhel9/9.1/ppc64le/baseos/debug',
'content/dist/rhel9/9.1/ppc64le/baseos/os',
'content/dist/rhel9/9.1/ppc64le/baseos/source/SRPMS',
'content/dist/rhel9/9.1/ppc64le/codeready-builder/debug',
'content/dist/rhel9/9.1/ppc64le/codeready-builder/os',
'content/dist/rhel9/9.1/ppc64le/codeready-builder/source/SRPMS',
'content/dist/rhel9/9.1/s390x/appstream/debug',
'content/dist/rhel9/9.1/s390x/appstream/os',
'content/dist/rhel9/9.1/s390x/appstream/source/SRPMS',
'content/dist/rhel9/9.1/s390x/baseos/debug',
'content/dist/rhel9/9.1/s390x/baseos/os',
'content/dist/rhel9/9.1/s390x/baseos/source/SRPMS',
'content/dist/rhel9/9.1/s390x/codeready-builder/debug',
'content/dist/rhel9/9.1/s390x/codeready-builder/os',
'content/dist/rhel9/9.1/s390x/codeready-builder/source/SRPMS',
'content/dist/rhel9/9.1/x86_64/appstream/debug',
'content/dist/rhel9/9.1/x86_64/appstream/os',
'content/dist/rhel9/9.1/x86_64/appstream/source/SRPMS',
'content/dist/rhel9/9.1/x86_64/baseos/debug',
'content/dist/rhel9/9.1/x86_64/baseos/os',
'content/dist/rhel9/9.1/x86_64/baseos/source/SRPMS',
'content/dist/rhel9/9.1/x86_64/codeready-builder/debug',
'content/dist/rhel9/9.1/x86_64/codeready-builder/os',
'content/dist/rhel9/9.1/x86_64/codeready-builder/source/SRPMS',
'content/dist/rhel9/9.2/aarch64/appstream/debug',
'content/dist/rhel9/9.2/aarch64/appstream/os',
'content/dist/rhel9/9.2/aarch64/appstream/source/SRPMS',
'content/dist/rhel9/9.2/aarch64/baseos/debug',
'content/dist/rhel9/9.2/aarch64/baseos/os',
'content/dist/rhel9/9.2/aarch64/baseos/source/SRPMS',
'content/dist/rhel9/9.2/aarch64/codeready-builder/debug',
'content/dist/rhel9/9.2/aarch64/codeready-builder/os',
'content/dist/rhel9/9.2/aarch64/codeready-builder/source/SRPMS',
'content/dist/rhel9/9.2/ppc64le/appstream/debug',
'content/dist/rhel9/9.2/ppc64le/appstream/os',
'content/dist/rhel9/9.2/ppc64le/appstream/source/SRPMS',
'content/dist/rhel9/9.2/ppc64le/baseos/debug',
'content/dist/rhel9/9.2/ppc64le/baseos/os',
'content/dist/rhel9/9.2/ppc64le/baseos/source/SRPMS',
'content/dist/rhel9/9.2/ppc64le/codeready-builder/debug',
'content/dist/rhel9/9.2/ppc64le/codeready-builder/os',
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'content/dist/rhel9/9.2/s390x/appstream/debug',
'content/dist/rhel9/9.2/s390x/appstream/os',
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'content/dist/rhel9/9.2/s390x/baseos/debug',
'content/dist/rhel9/9.2/s390x/baseos/os',
'content/dist/rhel9/9.2/s390x/baseos/source/SRPMS',
'content/dist/rhel9/9.2/s390x/codeready-builder/debug',
'content/dist/rhel9/9.2/s390x/codeready-builder/os',
'content/dist/rhel9/9.2/s390x/codeready-builder/source/SRPMS',
'content/dist/rhel9/9.2/x86_64/appstream/debug',
'content/dist/rhel9/9.2/x86_64/appstream/os',
'content/dist/rhel9/9.2/x86_64/appstream/source/SRPMS',
'content/dist/rhel9/9.2/x86_64/baseos/debug',
'content/dist/rhel9/9.2/x86_64/baseos/os',
'content/dist/rhel9/9.2/x86_64/baseos/source/SRPMS',
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'content/dist/rhel9/9.2/x86_64/codeready-builder/source/SRPMS',
'content/dist/rhel9/9.3/aarch64/appstream/debug',
'content/dist/rhel9/9.3/aarch64/appstream/os',
'content/dist/rhel9/9.3/aarch64/appstream/source/SRPMS',
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'content/dist/rhel9/9.3/ppc64le/appstream/os',
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'content/dist/rhel9/9.3/ppc64le/baseos/os',
'content/dist/rhel9/9.3/ppc64le/baseos/source/SRPMS',
'content/dist/rhel9/9.3/ppc64le/codeready-builder/debug',
'content/dist/rhel9/9.3/ppc64le/codeready-builder/os',
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'content/dist/rhel9/9/s390x/codeready-builder/debug',
'content/dist/rhel9/9/s390x/codeready-builder/os',
'content/dist/rhel9/9/s390x/codeready-builder/source/SRPMS',
'content/dist/rhel9/9/x86_64/appstream/debug',
'content/dist/rhel9/9/x86_64/appstream/os',
'content/dist/rhel9/9/x86_64/appstream/source/SRPMS',
'content/dist/rhel9/9/x86_64/baseos/debug',
'content/dist/rhel9/9/x86_64/baseos/os',
'content/dist/rhel9/9/x86_64/baseos/source/SRPMS',
'content/dist/rhel9/9/x86_64/codeready-builder/debug',
'content/dist/rhel9/9/x86_64/codeready-builder/os',
'content/dist/rhel9/9/x86_64/codeready-builder/source/SRPMS'
],
'pkgs': [
{'reference':'avahi-0.8-20.el9', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
{'reference':'avahi-compat-howl-0.8-20.el9', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
{'reference':'avahi-compat-howl-devel-0.8-20.el9', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
{'reference':'avahi-compat-libdns_sd-0.8-20.el9', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
{'reference':'avahi-compat-libdns_sd-devel-0.8-20.el9', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
{'reference':'avahi-devel-0.8-20.el9', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
{'reference':'avahi-glib-0.8-20.el9', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
{'reference':'avahi-glib-devel-0.8-20.el9', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
{'reference':'avahi-libs-0.8-20.el9', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
{'reference':'avahi-tools-0.8-20.el9', 'release':'9', '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, 'avahi / avahi-compat-howl / avahi-compat-howl-devel / etc');
}
Vendor | Product | Version | CPE |
---|---|---|---|
redhat | enterprise_linux | 9 | cpe:/o:redhat:enterprise_linux:9 |
redhat | enterprise_linux | avahi-tools | p-cpe:/a:redhat:enterprise_linux:avahi-tools |
redhat | enterprise_linux | avahi | p-cpe:/a:redhat:enterprise_linux:avahi |
redhat | enterprise_linux | avahi-devel | p-cpe:/a:redhat:enterprise_linux:avahi-devel |
redhat | enterprise_linux | avahi-compat-howl-devel | p-cpe:/a:redhat:enterprise_linux:avahi-compat-howl-devel |
redhat | enterprise_linux | avahi-compat-libdns_sd-devel | p-cpe:/a:redhat:enterprise_linux:avahi-compat-libdns_sd-devel |
redhat | enterprise_linux | avahi-glib | p-cpe:/a:redhat:enterprise_linux:avahi-glib |
redhat | enterprise_linux | avahi-glib-devel | p-cpe:/a:redhat:enterprise_linux:avahi-glib-devel |
redhat | enterprise_linux | avahi-libs | p-cpe:/a:redhat:enterprise_linux:avahi-libs |
redhat | enterprise_linux | avahi-compat-libdns_sd | p-cpe:/a:redhat:enterprise_linux:avahi-compat-libdns_sd |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-38469
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-38470
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-38471
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-38472
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-38473
www.nessus.org/u?5f004f1c
www.nessus.org/u?d922e0bf
access.redhat.com/errata/RHSA-2024:2433
access.redhat.com/security/updates/classification/#moderate
bugzilla.redhat.com/show_bug.cgi?id=2191687
bugzilla.redhat.com/show_bug.cgi?id=2191690
bugzilla.redhat.com/show_bug.cgi?id=2191691
bugzilla.redhat.com/show_bug.cgi?id=2191692
bugzilla.redhat.com/show_bug.cgi?id=2191694
6.2 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.2 High
AI Score
Confidence
High
0.0004 Low
EPSS
Percentile
9.0%