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
7.2 High
AI Score
Confidence
Low
0.001 Low
EPSS
Percentile
45.6%
The remote Fedora 39 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2024-22b915e51a advisory.
http.user_agent
and http.method
that have unbound cardinality. It leads to the serverโs potential memory exhaustion when many malicious requests are sent to it. HTTP header User- Agent or HTTP method for requests can be easily set by an attacker to be random and long. The library internally uses httpconv.ServerRequest
that records every value for HTTP method
and User-Agent
. In order to be affected, a program has to use the otelhttp.NewHandler
wrapper and not filter any unknown HTTP methods or User agents on the level of CDN, LB, previous middleware, etc. Version 0.44.0 fixed this issue when the values collected for attribute http.request.method
were changed to be restricted to a set of well-known values and other high cardinality attributes were removed. As a workaround to stop being affected, otelhttp.WithFilter()
can be used, but it requires manual careful configuration to not log certain requests entirely. For convenience and safe usage of this library, it should by default mark with the label unknown
non-standard HTTP methods and User agents to show that such requests were made but do not increase cardinality. In case someone wants to stay with the current behavior, library API should allow to enable it. (CVE-2023-45142)Note that Nessus has not tested for this issue but has instead relied only on the applicationโs self-reported version number.
#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##
# The descriptive text and package checks in this plugin were
# extracted from Fedora Security Advisory FEDORA-2024-22b915e51a
#
include('compat.inc');
if (description)
{
script_id(190677);
script_version("1.0");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/02/19");
script_cve_id("CVE-2023-45142");
script_xref(name:"FEDORA", value:"2024-22b915e51a");
script_name(english:"Fedora 39 : caddy (2024-22b915e51a)");
script_set_attribute(attribute:"synopsis", value:
"The remote Fedora host is missing one or more security updates.");
script_set_attribute(attribute:"description", value:
"The remote Fedora 39 host has a package installed that is affected by a vulnerability as referenced in the
FEDORA-2024-22b915e51a advisory.
- OpenTelemetry-Go Contrib is a collection of third-party packages for OpenTelemetry-Go. A handler wrapper
out of the box adds labels `http.user_agent` and `http.method` that have unbound cardinality. It leads to
the server's potential memory exhaustion when many malicious requests are sent to it. HTTP header User-
Agent or HTTP method for requests can be easily set by an attacker to be random and long. The library
internally uses `httpconv.ServerRequest` that records every value for HTTP `method` and `User-Agent`. In
order to be affected, a program has to use the `otelhttp.NewHandler` wrapper and not filter any unknown
HTTP methods or User agents on the level of CDN, LB, previous middleware, etc. Version 0.44.0 fixed this
issue when the values collected for attribute `http.request.method` were changed to be restricted to a set
of well-known values and other high cardinality attributes were removed. As a workaround to stop being
affected, `otelhttp.WithFilter()` can be used, but it requires manual careful configuration to not log
certain requests entirely. For convenience and safe usage of this library, it should by default mark with
the label `unknown` non-standard HTTP methods and User agents to show that such requests were made but do
not increase cardinality. In case someone wants to stay with the current behavior, library API should
allow to enable it. (CVE-2023-45142)
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://bodhi.fedoraproject.org/updates/FEDORA-2024-22b915e51a");
script_set_attribute(attribute:"solution", value:
"Update the affected caddy package.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/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: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-2023-45142");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_set_attribute(attribute:"vuln_publication_date", value:"2023/10/12");
script_set_attribute(attribute:"patch_publication_date", value:"2024/02/09");
script_set_attribute(attribute:"plugin_publication_date", value:"2024/02/19");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:39");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:caddy");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Fedora 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");
script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list");
exit(0);
}
include('rpm.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) || 'Fedora' >!< os_release) audit(AUDIT_OS_NOT, 'Fedora');
var os_ver = pregmatch(pattern: "Fedora.*release ([0-9]+)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'Fedora');
os_ver = os_ver[1];
if (! preg(pattern:"^39([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, 'Fedora 39', 'Fedora ' + os_ver);
if (!get_kb_item('Host/RedHat/rpm-list')) audit(AUDIT_PACKAGE_LIST_MISSING);
var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Fedora', cpu);
var pkgs = [
{'reference':'caddy-2.7.6-1.fc39', 'release':'FC39', 'rpm_spec_vers_cmp':TRUE}
];
var flag = 0;
foreach 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_HOLE,
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, 'caddy');
}
Vendor | Product | Version | CPE |
---|---|---|---|
fedoraproject | fedora | 39 | cpe:/o:fedoraproject:fedora:39 |
fedoraproject | fedora | caddy | p-cpe:/a:fedoraproject:fedora:caddy |
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
7.2 High
AI Score
Confidence
Low
0.001 Low
EPSS
Percentile
45.6%