According to the versions of the rsync package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :
The recv_files function in receiver.c in the daemon in rsync 3.1.2, and 3.1.3-development before 2017-12-03, proceeds with certain file metadata updates before checking for a filename in the daemon_filter_list data structure, which allows remote attackers to bypass intended access restrictions.(CVE-2017-17433)
The daemon in rsync 3.1.2, and 3.1.3-development before 2017-12-03, does not check for fnamecmp filenames in the daemon_filter_list data structure (in the recv_files function in receiver.c) and also does not apply the sanitize_paths protection mechanism to pathnames found in ‘xname follows’ strings (in the read_ndx_and_attrs function in rsync.c), which allows remote attackers to bypass intended access restrictions.(CVE-2017-17434)
The parse_arguments function in options.c in rsyncd in rsync before 3.1.3 does not prevent multiple
–protect-args uses, which allows remote attackers to bypass an argument-sanitization protection mechanism.(CVE-2018-5764)
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 70300
#
# (C) Tenable Network Security, Inc.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(117553);
script_version("1.9");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/06");
script_cve_id(
"CVE-2017-17433",
"CVE-2017-17434",
"CVE-2018-5764"
);
script_name(english:"EulerOS Virtualization 2.5.0 : rsync (EulerOS-SA-2018-1244)");
script_summary(english:"Checks the rpm output for the updated packages.");
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 rsync package installed, the EulerOS
Virtualization installation on the remote host is affected by the
following vulnerabilities :
- The recv_files function in receiver.c in the daemon in
rsync 3.1.2, and 3.1.3-development before 2017-12-03,
proceeds with certain file metadata updates before
checking for a filename in the daemon_filter_list data
structure, which allows remote attackers to bypass
intended access restrictions.(CVE-2017-17433)
- The daemon in rsync 3.1.2, and 3.1.3-development before
2017-12-03, does not check for fnamecmp filenames in
the daemon_filter_list data structure (in the
recv_files function in receiver.c) and also does not
apply the sanitize_paths protection mechanism to
pathnames found in 'xname follows' strings (in the
read_ndx_and_attrs function in rsync.c), which allows
remote attackers to bypass intended access
restrictions.(CVE-2017-17434)
- The parse_arguments function in options.c in rsyncd in
rsync before 3.1.3 does not prevent multiple
--protect-args uses, which allows remote attackers to
bypass an argument-sanitization protection
mechanism.(CVE-2018-5764)
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-2018-1244
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?87ffcd99");
script_set_attribute(attribute:"solution", value:
"Update the affected rsync packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
script_set_attribute(attribute:"patch_publication_date", value:"2018/07/22");
script_set_attribute(attribute:"plugin_publication_date", value:"2018/09/18");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:rsync");
script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:uvp:2.5.0");
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) 2018-2021 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("audit.inc");
include("global_settings.inc");
include("rpm.inc");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/EulerOS/release");
if (isnull(release) || release !~ "^EulerOS") audit(AUDIT_OS_NOT, "EulerOS");
uvp = get_kb_item("Host/EulerOS/uvp_version");
if (uvp != "2.5.0") audit(AUDIT_OS_NOT, "EulerOS Virtualization 2.5.0");
if (!get_kb_item("Host/EulerOS/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$" && "aarch64" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "EulerOS", cpu);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_ARCH_NOT, "i686 / x86_64", cpu);
flag = 0;
pkgs = ["rsync-3.0.9-15.h3"];
foreach (pkg in pkgs)
if (rpm_check(release:"EulerOS-2.0", reference:pkg)) flag++;
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_HOLE,
extra : rpm_report_get()
);
exit(0);
}
else
{
tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, "rsync");
}