According to the versions of the ruby packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :
An issue was discovered in Ruby through 2.6.7, 2.7.x through 2.7.3, and 3.x through 3.0.1. A malicious FTP server can use the PASV response to trick Net::FTP into connecting back to a given IP address and port.
This potentially makes curl extract information about services that are otherwise private and not disclosed (e.g., the attacker can conduct port scans and service banner extractions). (CVE-2021-31810)
CGI::Cookie.parse in Ruby through 2.6.8 mishandles security prefixes in cookie names. This also affects the CGI gem through 0.3.0 for Ruby. (CVE-2021-41819)
Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##
include('compat.inc');
if (description)
{
script_id(169588);
script_version("1.1");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/09/11");
script_cve_id("CVE-2021-31810", "CVE-2021-41819");
script_name(english:"EulerOS Virtualization 3.0.2.6 : ruby (EulerOS-SA-2023-1056)");
script_set_attribute(attribute:"synopsis", value:
"The remote EulerOS Virtualization host is missing multiple security updates.");
script_set_attribute(attribute:"description", value:
"According to the versions of the ruby packages installed, the EulerOS Virtualization installation on the remote host is
affected by the following vulnerabilities :
- An issue was discovered in Ruby through 2.6.7, 2.7.x through 2.7.3, and 3.x through 3.0.1. A malicious FTP
server can use the PASV response to trick Net::FTP into connecting back to a given IP address and port.
This potentially makes curl extract information about services that are otherwise private and not
disclosed (e.g., the attacker can conduct port scans and service banner extractions). (CVE-2021-31810)
- CGI::Cookie.parse in Ruby through 2.6.8 mishandles security prefixes in cookie names. This also affects
the CGI gem through 0.3.0 for Ruby. (CVE-2021-41819)
Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security
advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional
issues.");
# https://developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2023-1056
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?dedfb015");
script_set_attribute(attribute:"solution", value:
"Update the affected ruby packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:P/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-2021-41819");
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:"2021/07/13");
script_set_attribute(attribute:"patch_publication_date", value:"2023/01/06");
script_set_attribute(attribute:"plugin_publication_date", value:"2023/01/06");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:ruby");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:ruby-irb");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:ruby-libs");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:rubygem-bigdecimal");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:rubygem-io-console");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:rubygem-json");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:rubygem-psych");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:rubygem-rdoc");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:rubygems");
script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:uvp:3.0.2.6");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Huawei Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2023 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/EulerOS/release", "Host/EulerOS/rpm-list", "Host/EulerOS/uvp_version");
exit(0);
}
include("rpm.inc");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var _release = get_kb_item("Host/EulerOS/release");
if (isnull(_release) || _release !~ "^EulerOS") audit(AUDIT_OS_NOT, "EulerOS");
var uvp = get_kb_item("Host/EulerOS/uvp_version");
if (uvp != "3.0.2.6") audit(AUDIT_OS_NOT, "EulerOS Virtualization 3.0.2.6");
if (!get_kb_item("Host/EulerOS/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$" && "aarch64" >!< cpu && "x86" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "EulerOS", cpu);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$" && "x86" >!< cpu) audit(AUDIT_ARCH_NOT, "i686 / x86_64", cpu);
var flag = 0;
var pkgs = [
"ruby-2.0.0.648-33.h35.eulerosv2r7",
"ruby-irb-2.0.0.648-33.h35.eulerosv2r7",
"ruby-libs-2.0.0.648-33.h35.eulerosv2r7",
"rubygem-bigdecimal-1.2.0-33.h35.eulerosv2r7",
"rubygem-io-console-0.4.2-33.h35.eulerosv2r7",
"rubygem-json-1.7.7-33.h35.eulerosv2r7",
"rubygem-psych-2.0.0-33.h35.eulerosv2r7",
"rubygem-rdoc-4.0.0-33.h35.eulerosv2r7",
"rubygems-2.0.14.1-33.h35.eulerosv2r7"
];
foreach (var pkg in pkgs)
if (rpm_check(release:"EulerOS-2.0", reference:pkg)) 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, "ruby");
}