The remote CentOS Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the CESA-2023:0446 advisory.
In net/http in Go before 1.18.6 and 1.19.x before 1.19.1, attackers can cause a denial of service because an HTTP/2 connection can hang during closing if shutdown were preempted by a fatal error. (CVE-2022-27664)
Reader.Read does not set a limit on the maximum size of file headers. A maliciously crafted archive could cause Read to allocate unbounded amounts of memory, potentially causing resource exhaustion or panics.
After fix, Reader.Read limits the maximum size of header blocks to 1 MiB. (CVE-2022-2879)
Requests forwarded by ReverseProxy include the raw query parameters from the inbound request, including unparsable parameters rejected by net/http. This could permit query parameter smuggling when a Go proxy forwards a parameter with an unparsable value. After fix, ReverseProxy sanitizes the query parameters in the forwarded query when the outbound request’s Form field is set after the ReverseProxy. Director function returns, indicating that the proxy has parsed the query parameters. Proxies which do not parse query parameters continue to forward the original query parameters unchanged. (CVE-2022-2880)
A too-short encoded message can cause a panic in Float.GobDecode and Rat GobDecode in math/big in Go before 1.17.13 and 1.18.5, potentially allowing a denial of service. (CVE-2022-32189)
Programs which compile regular expressions from untrusted sources may be vulnerable to memory exhaustion or denial of service. The parsed regexp representation is linear in the size of the input, but in some cases the constant factor can be as high as 40,000, making relatively small regexps consume much larger amounts of memory. After fix, each regexp being parsed is limited to a 256 MB memory footprint. Regular expressions whose representation would use more space than that are rejected. Normal use of regular expressions is unaffected. (CVE-2022-41715)
An attacker can cause excessive memory growth in a Go server accepting HTTP/2 requests. HTTP/2 server connections contain a cache of HTTP header keys sent by the client. While the total number of entries in this cache is capped, an attacker sending very large keys can cause the server to allocate approximately 64 MiB per open connection. (CVE-2022-41717)
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 package checks in this plugin were extracted from
# Red Hat Security Advisory RHSA-2023:0446. The text
# itself is copyright (C) Red Hat, Inc.
##
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(170628);
script_version("1.3");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/02/08");
script_cve_id(
"CVE-2022-27664",
"CVE-2022-2879",
"CVE-2022-2880",
"CVE-2022-32189",
"CVE-2022-41715",
"CVE-2022-41717"
);
script_xref(name:"RHSA", value:"2023:0446");
script_name(english:"CentOS 8 : go-toolset:rhel8 (CESA-2023:0446)");
script_set_attribute(attribute:"synopsis", value:
"The remote CentOS host is missing one or more security updates.");
script_set_attribute(attribute:"description", value:
"The remote CentOS Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the
CESA-2023:0446 advisory.
- In net/http in Go before 1.18.6 and 1.19.x before 1.19.1, attackers can cause a denial of service because
an HTTP/2 connection can hang during closing if shutdown were preempted by a fatal error. (CVE-2022-27664)
- Reader.Read does not set a limit on the maximum size of file headers. A maliciously crafted archive could
cause Read to allocate unbounded amounts of memory, potentially causing resource exhaustion or panics.
After fix, Reader.Read limits the maximum size of header blocks to 1 MiB. (CVE-2022-2879)
- Requests forwarded by ReverseProxy include the raw query parameters from the inbound request, including
unparsable parameters rejected by net/http. This could permit query parameter smuggling when a Go proxy
forwards a parameter with an unparsable value. After fix, ReverseProxy sanitizes the query parameters in
the forwarded query when the outbound request's Form field is set after the ReverseProxy. Director
function returns, indicating that the proxy has parsed the query parameters. Proxies which do not parse
query parameters continue to forward the original query parameters unchanged. (CVE-2022-2880)
- A too-short encoded message can cause a panic in Float.GobDecode and Rat GobDecode in math/big in Go
before 1.17.13 and 1.18.5, potentially allowing a denial of service. (CVE-2022-32189)
- Programs which compile regular expressions from untrusted sources may be vulnerable to memory exhaustion
or denial of service. The parsed regexp representation is linear in the size of the input, but in some
cases the constant factor can be as high as 40,000, making relatively small regexps consume much larger
amounts of memory. After fix, each regexp being parsed is limited to a 256 MB memory footprint. Regular
expressions whose representation would use more space than that are rejected. Normal use of regular
expressions is unaffected. (CVE-2022-41715)
- An attacker can cause excessive memory growth in a Go server accepting HTTP/2 requests. HTTP/2 server
connections contain a cache of HTTP header keys sent by the client. While the total number of entries in
this cache is capped, an attacker sending very large keys can cause the server to allocate approximately
64 MiB per open connection. (CVE-2022-41717)
Note that Nessus has not tested for these issues 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-2023:0446");
script_set_attribute(attribute:"solution", value:
"Update the affected delve package.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:C/A:N");
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:N/S:U/C:N/I:H/A:N");
script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2022-2880");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"vuln_publication_date", value:"2022/10/04");
script_set_attribute(attribute:"patch_publication_date", value:"2023/01/25");
script_set_attribute(attribute:"plugin_publication_date", value:"2023/01/25");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:8-stream");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:delve");
script_set_attribute(attribute:"generated_plugin", value:"current");
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(?: Stream)?(?: Linux)? release ([0-9]+)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'CentOS');
os_ver = os_ver[1];
if ('CentOS Stream' >!< os_release) audit(AUDIT_OS_NOT, 'CentOS 8-Stream');
if (!rhel_check_release(operator: 'ge', os_version: os_ver, rhel_version: '8')) audit(AUDIT_OS_NOT, 'CentOS 8.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 module_ver = get_kb_item('Host/RedHat/appstream/go-toolset');
if (isnull(module_ver)) audit(AUDIT_PACKAGE_NOT_INSTALLED, 'Module go-toolset:rhel8');
if ('rhel8' >!< module_ver) audit(AUDIT_PACKAGE_NOT_AFFECTED, 'Module go-toolset:' + module_ver);
var appstreams = {
'go-toolset:rhel8': [
{'reference':'delve-1.8.3-1.module_el8.7.0+1141+abb4f2cd', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE}
]
};
var flag = 0;
appstreams_found = 0;
foreach module (keys(appstreams)) {
var appstream = NULL;
var appstream_name = NULL;
var appstream_version = NULL;
var appstream_split = split(module, sep:':', keep:FALSE);
if (!empty_or_null(appstream_split)) {
appstream_name = appstream_split[0];
appstream_version = appstream_split[1];
if (!empty_or_null(appstream_name)) appstream = get_one_kb_item('Host/RedHat/appstream/' + appstream_name);
}
if (!empty_or_null(appstream) && appstream_version == appstream || appstream_name == 'all') {
appstreams_found++;
foreach package_array ( appstreams[module] ) {
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 = 'CentOS-' + 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 (!appstreams_found) audit(AUDIT_PACKAGE_NOT_INSTALLED, 'Module go-toolset:rhel8');
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, 'delve');
}
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-27664
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-2879
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-2880
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-32189
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-41715
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-41717
access.redhat.com/errata/RHSA-2023:0446