CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
AI Score
Confidence
Low
EPSS
Percentile
10.3%
The remote Redhat Enterprise Linux 7 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2024:3669 advisory.
The less utility is a text file browser that resembles more, but allows users to move backwards in the file as well as forwards. Since less does not read the entire input file at startup, it also starts more quickly than ordinary text editors.
Security Fix(es):
* less: OS command injection (CVE-2024-32487)
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.
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.
#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2024:3669. The text
# itself is copyright (C) Red Hat, Inc.
##
include('compat.inc');
if (description)
{
script_id(200152);
script_version("1.1");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/06/06");
script_cve_id("CVE-2024-32487");
script_xref(name:"RHSA", value:"2024:3669");
script_name(english:"RHEL 7 : less (RHSA-2024:3669)");
script_set_attribute(attribute:"synopsis", value:
"The remote Red Hat host is missing a security update for less.");
script_set_attribute(attribute:"description", value:
"The remote Redhat Enterprise Linux 7 host has a package installed that is affected by a vulnerability as referenced in
the RHSA-2024:3669 advisory.
The less utility is a text file browser that resembles more, but allows
users to move backwards in the file as well as forwards. Since less does not
read the entire input file at startup, it also starts more quickly than ordinary
text editors.
Security Fix(es):
* less: OS command injection (CVE-2024-32487)
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.
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.");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/updates/classification/#important");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2274980");
# https://access.redhat.com/security/data/csaf/v2/advisories/2024/rhsa-2024_3669.json
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?21668307");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2024:3669");
script_set_attribute(attribute:"solution", value:
"Update the RHEL less package based on the guidance in RHSA-2024:3669.");
script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/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:N/UI:R/S:C/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-2024-32487");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_cwe_id(78);
script_set_attribute(attribute:"vendor_severity", value:"Important");
script_set_attribute(attribute:"vuln_publication_date", value:"2024/04/13");
script_set_attribute(attribute:"patch_publication_date", value:"2024/06/06");
script_set_attribute(attribute:"plugin_publication_date", value:"2024/06/06");
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:less");
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: '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': [
'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',
'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',
'content/dist/rhel/client/7/7Client/x86_64/optional/source/SRPMS',
'content/dist/rhel/client/7/7Client/x86_64/os',
'content/dist/rhel/client/7/7Client/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',
'content/dist/rhel/power-le/7/7.9/ppc64le/highavailability/source/SRPMS',
'content/dist/rhel/power-le/7/7.9/ppc64le/optional/debug',
'content/dist/rhel/power-le/7/7.9/ppc64le/optional/os',
'content/dist/rhel/power-le/7/7.9/ppc64le/optional/source/SRPMS',
'content/dist/rhel/power-le/7/7.9/ppc64le/os',
'content/dist/rhel/power-le/7/7.9/ppc64le/resilientstorage/debug',
'content/dist/rhel/power-le/7/7.9/ppc64le/resilientstorage/os',
'content/dist/rhel/power-le/7/7.9/ppc64le/resilientstorage/source/SRPMS',
'content/dist/rhel/power-le/7/7.9/ppc64le/source/SRPMS',
'content/dist/rhel/power-le/7/7Server/ppc64le/debug',
'content/dist/rhel/power-le/7/7Server/ppc64le/highavailability/debug',
'content/dist/rhel/power-le/7/7Server/ppc64le/highavailability/os',
'content/dist/rhel/power-le/7/7Server/ppc64le/highavailability/source/SRPMS',
'content/dist/rhel/power-le/7/7Server/ppc64le/optional/debug',
'content/dist/rhel/power-le/7/7Server/ppc64le/optional/os',
'content/dist/rhel/power-le/7/7Server/ppc64le/optional/source/SRPMS',
'content/dist/rhel/power-le/7/7Server/ppc64le/os',
'content/dist/rhel/power-le/7/7Server/ppc64le/resilientstorage/debug',
'content/dist/rhel/power-le/7/7Server/ppc64le/resilientstorage/os',
'content/dist/rhel/power-le/7/7Server/ppc64le/resilientstorage/source/SRPMS',
'content/dist/rhel/power-le/7/7Server/ppc64le/source/SRPMS',
'content/dist/rhel/power/7/7.9/ppc64/debug',
'content/dist/rhel/power/7/7.9/ppc64/optional/debug',
'content/dist/rhel/power/7/7.9/ppc64/optional/os',
'content/dist/rhel/power/7/7.9/ppc64/optional/source/SRPMS',
'content/dist/rhel/power/7/7.9/ppc64/os',
'content/dist/rhel/power/7/7.9/ppc64/source/SRPMS',
'content/dist/rhel/power/7/7Server/ppc64/debug',
'content/dist/rhel/power/7/7Server/ppc64/optional/debug',
'content/dist/rhel/power/7/7Server/ppc64/optional/os',
'content/dist/rhel/power/7/7Server/ppc64/optional/source/SRPMS',
'content/dist/rhel/power/7/7Server/ppc64/os',
'content/dist/rhel/power/7/7Server/ppc64/source/SRPMS',
'content/dist/rhel/server/7/7.9/x86_64/debug',
'content/dist/rhel/server/7/7.9/x86_64/highavailability/debug',
'content/dist/rhel/server/7/7.9/x86_64/highavailability/os',
'content/dist/rhel/server/7/7.9/x86_64/highavailability/source/SRPMS',
'content/dist/rhel/server/7/7.9/x86_64/optional/debug',
'content/dist/rhel/server/7/7.9/x86_64/optional/os',
'content/dist/rhel/server/7/7.9/x86_64/optional/source/SRPMS',
'content/dist/rhel/server/7/7.9/x86_64/os',
'content/dist/rhel/server/7/7.9/x86_64/resilientstorage/debug',
'content/dist/rhel/server/7/7.9/x86_64/resilientstorage/os',
'content/dist/rhel/server/7/7.9/x86_64/resilientstorage/source/SRPMS',
'content/dist/rhel/server/7/7.9/x86_64/source/SRPMS',
'content/dist/rhel/server/7/7Server/x86_64/debug',
'content/dist/rhel/server/7/7Server/x86_64/highavailability/debug',
'content/dist/rhel/server/7/7Server/x86_64/highavailability/os',
'content/dist/rhel/server/7/7Server/x86_64/highavailability/source/SRPMS',
'content/dist/rhel/server/7/7Server/x86_64/optional/debug',
'content/dist/rhel/server/7/7Server/x86_64/optional/os',
'content/dist/rhel/server/7/7Server/x86_64/optional/source/SRPMS',
'content/dist/rhel/server/7/7Server/x86_64/os',
'content/dist/rhel/server/7/7Server/x86_64/resilientstorage/debug',
'content/dist/rhel/server/7/7Server/x86_64/resilientstorage/os',
'content/dist/rhel/server/7/7Server/x86_64/resilientstorage/source/SRPMS',
'content/dist/rhel/server/7/7Server/x86_64/source/SRPMS',
'content/dist/rhel/system-z/7/7.9/s390x/debug',
'content/dist/rhel/system-z/7/7.9/s390x/highavailability/debug',
'content/dist/rhel/system-z/7/7.9/s390x/highavailability/os',
'content/dist/rhel/system-z/7/7.9/s390x/highavailability/source/SRPMS',
'content/dist/rhel/system-z/7/7.9/s390x/optional/debug',
'content/dist/rhel/system-z/7/7.9/s390x/optional/os',
'content/dist/rhel/system-z/7/7.9/s390x/optional/source/SRPMS',
'content/dist/rhel/system-z/7/7.9/s390x/os',
'content/dist/rhel/system-z/7/7.9/s390x/resilientstorage/debug',
'content/dist/rhel/system-z/7/7.9/s390x/resilientstorage/os',
'content/dist/rhel/system-z/7/7.9/s390x/resilientstorage/source/SRPMS',
'content/dist/rhel/system-z/7/7.9/s390x/source/SRPMS',
'content/dist/rhel/system-z/7/7Server/s390x/debug',
'content/dist/rhel/system-z/7/7Server/s390x/highavailability/debug',
'content/dist/rhel/system-z/7/7Server/s390x/highavailability/os',
'content/dist/rhel/system-z/7/7Server/s390x/highavailability/source/SRPMS',
'content/dist/rhel/system-z/7/7Server/s390x/optional/debug',
'content/dist/rhel/system-z/7/7Server/s390x/optional/os',
'content/dist/rhel/system-z/7/7Server/s390x/optional/source/SRPMS',
'content/dist/rhel/system-z/7/7Server/s390x/os',
'content/dist/rhel/system-z/7/7Server/s390x/resilientstorage/debug',
'content/dist/rhel/system-z/7/7Server/s390x/resilientstorage/os',
'content/dist/rhel/system-z/7/7Server/s390x/resilientstorage/source/SRPMS',
'content/dist/rhel/system-z/7/7Server/s390x/source/SRPMS',
'content/dist/rhel/workstation/7/7.9/x86_64/debug',
'content/dist/rhel/workstation/7/7.9/x86_64/optional/debug',
'content/dist/rhel/workstation/7/7.9/x86_64/optional/os',
'content/dist/rhel/workstation/7/7.9/x86_64/optional/source/SRPMS',
'content/dist/rhel/workstation/7/7.9/x86_64/os',
'content/dist/rhel/workstation/7/7.9/x86_64/source/SRPMS',
'content/dist/rhel/workstation/7/7Workstation/x86_64/debug',
'content/dist/rhel/workstation/7/7Workstation/x86_64/optional/debug',
'content/dist/rhel/workstation/7/7Workstation/x86_64/optional/os',
'content/dist/rhel/workstation/7/7Workstation/x86_64/optional/source/SRPMS',
'content/dist/rhel/workstation/7/7Workstation/x86_64/os',
'content/dist/rhel/workstation/7/7Workstation/x86_64/source/SRPMS',
'content/fastrack/rhel/client/7/x86_64/debug',
'content/fastrack/rhel/client/7/x86_64/optional/debug',
'content/fastrack/rhel/client/7/x86_64/optional/os',
'content/fastrack/rhel/client/7/x86_64/optional/source/SRPMS',
'content/fastrack/rhel/client/7/x86_64/os',
'content/fastrack/rhel/client/7/x86_64/source/SRPMS',
'content/fastrack/rhel/power/7/ppc64/debug',
'content/fastrack/rhel/power/7/ppc64/optional/debug',
'content/fastrack/rhel/power/7/ppc64/optional/os',
'content/fastrack/rhel/power/7/ppc64/optional/source/SRPMS',
'content/fastrack/rhel/power/7/ppc64/os',
'content/fastrack/rhel/power/7/ppc64/source/SRPMS',
'content/fastrack/rhel/server/7/x86_64/debug',
'content/fastrack/rhel/server/7/x86_64/highavailability/debug',
'content/fastrack/rhel/server/7/x86_64/highavailability/os',
'content/fastrack/rhel/server/7/x86_64/highavailability/source/SRPMS',
'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':'less-458-10.el7_9', 'cpu':'ppc64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'less-458-10.el7_9', 'cpu':'ppc64le', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'less-458-10.el7_9', 'cpu':'s390x', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'less-458-10.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_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, 'less');
}
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
AI Score
Confidence
Low
EPSS
Percentile
10.3%