CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:N/I:N/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
AI Score
Confidence
Low
EPSS
Percentile
59.0%
The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2023:3460 advisory.
curl: HTTP compression denial of service (CVE-2022-32206)
curl: HTTP multi-header compression denial of service (CVE-2023-23916)
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-2023:3460. The text
# itself is copyright (C) Red Hat, Inc.
##
include('compat.inc');
if (description)
{
script_id(176738);
script_version("1.3");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/04/28");
script_cve_id("CVE-2022-32206", "CVE-2023-23916");
script_xref(name:"RHSA", value:"2023:3460");
script_xref(name:"IAVA", value:"2023-A-0008-S");
script_xref(name:"IAVA", value:"2022-A-0255-S");
script_name(english:"RHEL 8 : curl (RHSA-2023:3460)");
script_set_attribute(attribute:"synopsis", value:
"The remote Red Hat host is missing one or more security updates for curl.");
script_set_attribute(attribute:"description", value:
"The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as
referenced in the RHSA-2023:3460 advisory.
- curl: HTTP compression denial of service (CVE-2022-32206)
- curl: HTTP multi-header compression denial of service (CVE-2023-23916)
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/2023/rhsa-2023_3460.json
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?a01beaf8");
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=2099300");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2167815");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2023:3460");
script_set_attribute(attribute:"solution", value:
"Update the RHEL curl package based on the guidance in RHSA-2023:3460.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:P");
script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2022-32206");
script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2023-23916");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_cwe_id(770);
script_set_attribute(attribute:"vendor_severity", value:"Moderate");
script_set_attribute(attribute:"vuln_publication_date", value:"2022/06/27");
script_set_attribute(attribute:"patch_publication_date", value:"2023/06/06");
script_set_attribute(attribute:"plugin_publication_date", value:"2023/06/06");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:rhel_aus:8.4");
script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:rhel_e4s:8.4");
script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:rhel_tus:8.4");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:curl");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:libcurl");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:libcurl-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:libcurl-minimal");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_set_attribute(attribute:"stig_severity", value:"I");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Red Hat Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2023-2024 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: 'eq', os_version: os_ver, rhel_version: '8.4')) audit(AUDIT_OS_NOT, 'Red Hat 8.4', '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/aus/rhel8/8.4/x86_64/baseos/debug',
'content/aus/rhel8/8.4/x86_64/baseos/os',
'content/aus/rhel8/8.4/x86_64/baseos/source/SRPMS',
'content/e4s/rhel8/8.4/x86_64/baseos/debug',
'content/e4s/rhel8/8.4/x86_64/baseos/os',
'content/e4s/rhel8/8.4/x86_64/baseos/source/SRPMS',
'content/tus/rhel8/8.4/x86_64/baseos/debug',
'content/tus/rhel8/8.4/x86_64/baseos/os',
'content/tus/rhel8/8.4/x86_64/baseos/source/SRPMS'
],
'pkgs': [
{'reference':'curl-7.61.1-18.el8_4.3', 'sp':'4', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'curl-7.61.1-18.el8_4.3', 'sp':'4', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'libcurl-7.61.1-18.el8_4.3', 'sp':'4', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'libcurl-7.61.1-18.el8_4.3', 'sp':'4', 'cpu':'i686', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'libcurl-7.61.1-18.el8_4.3', 'sp':'4', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'libcurl-devel-7.61.1-18.el8_4.3', 'sp':'4', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'libcurl-devel-7.61.1-18.el8_4.3', 'sp':'4', 'cpu':'i686', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'libcurl-devel-7.61.1-18.el8_4.3', 'sp':'4', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'libcurl-minimal-7.61.1-18.el8_4.3', 'sp':'4', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'libcurl-minimal-7.61.1-18.el8_4.3', 'sp':'4', 'cpu':'i686', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'libcurl-minimal-7.61.1-18.el8_4.3', 'sp':'4', 'cpu':'x86_64', 'release':'8', '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 subscription_caveat = '\n' +
'NOTE: This vulnerability check contains fixes that apply to\n' +
'packages only available in the Red Hat Enterprise Linux\n' +
'Advanced Update Support, Telco Extended Update Support or Update Services for SAP Solutions repositories.\n' +
'Access to these repositories requires a paid RHEL subscription.\n';
var extra = NULL;
if (isnull(applicable_repo_urls) || !applicable_repo_urls) extra = subscription_caveat + rpm_report_get() + redhat_report_repo_caveat();
else extra = subscription_caveat + 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, 'curl / libcurl / libcurl-devel / libcurl-minimal');
}
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-32206
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-23916
www.nessus.org/u?a01beaf8
access.redhat.com/errata/RHSA-2023:3460
access.redhat.com/security/updates/classification/#moderate
bugzilla.redhat.com/show_bug.cgi?id=2099300
bugzilla.redhat.com/show_bug.cgi?id=2167815
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:N/I:N/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
AI Score
Confidence
Low
EPSS
Percentile
59.0%