CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
AI Score
Confidence
High
EPSS
Percentile
47.7%
The remote CentOS Linux 7 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2023:7743 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-2023:7743.
##
include('compat.inc');
if (description)
{
script_id(187223);
script_version("1.1");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/02/08");
script_cve_id("CVE-2022-43552");
script_xref(name:"IAVA", value:"2023-A-0008-S");
script_xref(name:"RHSA", value:"2023:7743");
script_name(english:"CentOS 7 : curl (RHSA-2023:7743)");
script_set_attribute(attribute:"synopsis", value:
"The remote CentOS Linux host is missing a security update.");
script_set_attribute(attribute:"description", value:
"The remote CentOS Linux 7 host has packages installed that are affected by a vulnerability as referenced in the
RHSA-2023:7743 advisory.
- A use after free vulnerability exists in curl <7.87.0. Curl can be asked to *tunnel* virtually all
protocols it supports through an HTTP proxy. HTTP proxies can (and often do) deny such tunnel operations.
When getting denied to tunnel the specific protocols SMB or TELNET, curl would use a heap-allocated struct
after it had been freed, in its transfer shutdown code path. (CVE-2022-43552)
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/errata/RHSA-2023:7743");
script_set_attribute(attribute:"solution", value:
"Update the affected curl, libcurl and / or libcurl-devel packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:H/Au:N/C:N/I:N/A:C");
script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:N/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-2022-43552");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"vendor_severity", value:"Low");
script_set_attribute(attribute:"vuln_publication_date", value:"2022/12/21");
script_set_attribute(attribute:"patch_publication_date", value:"2023/12/12");
script_set_attribute(attribute:"plugin_publication_date", value:"2023/12/22");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:curl");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libcurl");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libcurl-devel");
script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:7");
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:"CentOS 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");
script_require_keys("Host/local_checks_enabled", "Host/CentOS/release", "Host/CentOS/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/CentOS/release');
if (isnull(os_release) || 'CentOS' >!< os_release) audit(AUDIT_OS_NOT, 'CentOS');
var os_ver = pregmatch(pattern: "CentOS(?: Linux)? release ([0-9]+)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'CentOS');
os_ver = os_ver[1];
if (!rhel_check_release(operator: 'ge', os_version: os_ver, rhel_version: '7')) audit(AUDIT_OS_NOT, 'CentOS 7.x', 'CentOS ' + os_ver);
if (!get_kb_item('Host/CentOS/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, 'CentOS', cpu);
var pkgs = [
{'reference':'curl-7.29.0-59.el7', 'cpu':'ppc64le', 'release':'CentOS-7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'curl-7.29.0-59.el7', 'cpu':'x86_64', 'release':'CentOS-7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'libcurl-7.29.0-59.el7', 'cpu':'ppc64le', 'release':'CentOS-7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'libcurl-7.29.0-59.el7', 'cpu':'x86_64', 'release':'CentOS-7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'libcurl-devel-7.29.0-59.el7', 'cpu':'ppc64le', 'release':'CentOS-7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'libcurl-devel-7.29.0-59.el7', 'cpu':'x86_64', 'release':'CentOS-7', 'rpm_spec_vers_cmp':TRUE}
];
var flag = 0;
foreach var package_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;
if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
if (!empty_or_null(package_array['release'])) _release = package_array['release'];
if (!empty_or_null(package_array['sp'])) sp = package_array['sp'];
if (!empty_or_null(package_array['cpu'])) _cpu = package_array['cpu'];
if (!empty_or_null(package_array['el_string'])) el_string = package_array['el_string'];
if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
if (!empty_or_null(package_array['epoch'])) epoch = package_array['epoch'];
if (!empty_or_null(package_array['allowmaj'])) allowmaj = package_array['allowmaj'];
if (reference && _release) {
if (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)) flag++;
}
}
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_WARNING,
extra : rpm_report_get()
);
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');
}
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
AI Score
Confidence
High
EPSS
Percentile
47.7%