The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2024:0887 advisory.
A malicious HTTP sender can use chunk extensions to cause a receiver reading from a request or response body to read many more bytes from the network than are in the body. A malicious HTTP client can further exploit this to cause a server to automatically read a large amount of data (up to about 1GiB) when a handler fails to read the entire body of a request. Chunk extensions are a little-used HTTP feature which permit including additional metadata in a request or response body sent using the chunked encoding. The net/http chunked encoding reader discards this metadata. A sender can exploit this by inserting a large metadata segment with each byte transferred. The chunk reader now produces an error if the ratio of real body to encoded bytes grows too small. (CVE-2023-39326)
Using go get to fetch a module with the .git suffix may unexpectedly fallback to the insecure git:// protocol if the module is unavailable via the secure https:// and git+ssh:// protocols, even if GOINSECURE is not set for said module. This only affects users who are not using the module proxy and are fetching modules directly (i.e. GOPROXY=off). (CVE-2023-45285)
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
# AlmaLinux Security Advisory ALSA-2024:0887.
##
include('compat.inc');
if (description)
{
script_id(190905);
script_version("1.1");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/03/08");
script_cve_id("CVE-2023-39326", "CVE-2023-45285");
script_xref(name:"ALSA", value:"2024:0887");
script_xref(name:"IAVB", value:"2023-B-0096-S");
script_name(english:"AlmaLinux 8 : go-toolset:rhel8 (ALSA-2024:0887)");
script_set_attribute(attribute:"synopsis", value:
"The remote AlmaLinux host is missing one or more security updates.");
script_set_attribute(attribute:"description", value:
"The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the
ALSA-2024:0887 advisory.
- A malicious HTTP sender can use chunk extensions to cause a receiver reading from a request or response
body to read many more bytes from the network than are in the body. A malicious HTTP client can further
exploit this to cause a server to automatically read a large amount of data (up to about 1GiB) when a
handler fails to read the entire body of a request. Chunk extensions are a little-used HTTP feature which
permit including additional metadata in a request or response body sent using the chunked encoding. The
net/http chunked encoding reader discards this metadata. A sender can exploit this by inserting a large
metadata segment with each byte transferred. The chunk reader now produces an error if the ratio of real
body to encoded bytes grows too small. (CVE-2023-39326)
- Using go get to fetch a module with the .git suffix may unexpectedly fallback to the insecure git://
protocol if the module is unavailable via the secure https:// and git+ssh:// protocols, even if
GOINSECURE is not set for said module. This only affects users who are not using the module proxy and are
fetching modules directly (i.e. GOPROXY=off). (CVE-2023-45285)
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://errata.almalinux.org/8/ALSA-2024-0887.html");
script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:N/A:N");
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:H/I:N/A:N");
script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2023-45285");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_cwe_id(400, 693);
script_set_attribute(attribute:"vuln_publication_date", value:"2023/12/06");
script_set_attribute(attribute:"patch_publication_date", value:"2024/02/20");
script_set_attribute(attribute:"plugin_publication_date", value:"2024/02/22");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:delve");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:go-toolset");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:golang");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:golang-bin");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:golang-docs");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:golang-misc");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:golang-src");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:golang-tests");
script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:8");
script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:8::appstream");
script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:8::baseos");
script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:8::highavailability");
script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:8::nfv");
script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:8::powertools");
script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:8::realtime");
script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:8::resilientstorage");
script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:8::sap");
script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:8::sap_hana");
script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:8::supplementary");
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:"Alma Linux 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/AlmaLinux/release", "Host/AlmaLinux/rpm-list", "Host/cpu");
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/AlmaLinux/release');
if (isnull(os_release) || 'AlmaLinux' >!< os_release) audit(AUDIT_OS_NOT, 'AlmaLinux');
var os_ver = pregmatch(pattern: "AlmaLinux release ([0-9]+(\.[0-9]+)?)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'AlmaLinux');
os_ver = os_ver[1];
if (! preg(pattern:"^8([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, 'AlmaLinux 8.x', 'AlmaLinux ' + os_ver);
if (!get_kb_item('Host/AlmaLinux/rpm-list')) audit(AUDIT_PACKAGE_LIST_MISSING);
var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'AlmaLinux', cpu);
var module_ver = get_kb_item('Host/AlmaLinux/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-1.20.2-1.module_el8.9.0+3642+43318da8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'go-toolset-1.20.12-1.module_el8.9.0+3728+f1d47c6f', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'go-toolset-1.20.12-1.module_el8.9.0+3728+f1d47c6f', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'golang-1.20.12-2.module_el8.9.0+3728+f1d47c6f', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'golang-1.20.12-2.module_el8.9.0+3728+f1d47c6f', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'golang-bin-1.20.12-2.module_el8.9.0+3728+f1d47c6f', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'golang-bin-1.20.12-2.module_el8.9.0+3728+f1d47c6f', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'golang-docs-1.20.12-2.module_el8.9.0+3728+f1d47c6f', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'golang-misc-1.20.12-2.module_el8.9.0+3728+f1d47c6f', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'golang-src-1.20.12-2.module_el8.9.0+3728+f1d47c6f', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'golang-tests-1.20.12-2.module_el8.9.0+3728+f1d47c6f', 'release':'8', 'rpm_spec_vers_cmp':TRUE}
]
};
var flag = 0;
var appstreams_found = 0;
foreach var 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/AlmaLinux/appstream/' + appstream_name);
}
if (!empty_or_null(appstream) && appstream_version == appstream || appstream_name == 'all') {
appstreams_found++;
foreach var 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;
var exists_check = NULL;
if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
if (!empty_or_null(package_array['release'])) _release = 'Alma-' + 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 (!empty_or_null(package_array['exists_check'])) exists_check = package_array['exists_check'];
if (reference && _release && (!exists_check || rpm_exists(release:_release, rpm:exists_check))) {
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 / go-toolset / golang / golang-bin / golang-docs / etc');
}
Vendor | Product | Version | CPE |
---|---|---|---|
alma | linux | delve | p-cpe:/a:alma:linux:delve |
alma | linux | go-toolset | p-cpe:/a:alma:linux:go-toolset |
alma | linux | golang | p-cpe:/a:alma:linux:golang |
alma | linux | golang-bin | p-cpe:/a:alma:linux:golang-bin |
alma | linux | golang-docs | p-cpe:/a:alma:linux:golang-docs |
alma | linux | golang-misc | p-cpe:/a:alma:linux:golang-misc |
alma | linux | golang-src | p-cpe:/a:alma:linux:golang-src |
alma | linux | golang-tests | p-cpe:/a:alma:linux:golang-tests |
alma | linux | 8 | cpe:/o:alma:linux:8 |
alma | linux | 8 | cpe:/o:alma:linux:8::appstream |