According to the versions of the xorg-x11-server package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :
A vulnerability was found in X.Org. This security flaw occurs because the XkbCopyNames function left a dangling pointer to freed memory, resulting in out-of-bounds memory access on subsequent XkbGetKbdByName requests… This issue can lead to local privileges elevation on systems where the X server is running privileged and remote code execution for ssh X forwarding sessions. (CVE-2022-4283)
A vulnerability was found in X.Org. This security flaw occurs becuase the swap handler for the XTestFakeInput request of the XTest extension may corrupt the stack if GenericEvents with lengths larger than 32 bytes are sent through a the XTestFakeInput request. This issue can lead to local privileges elevation on systems where the X server is running privileged and remote code execution for ssh X forwarding sessions. This issue does not affect systems where client and server use the same byte order.
(CVE-2022-46340)
A vulnerability was found in X.Org. This security flaw occurs because the handler for the XIPassiveUngrab request accesses out-of-bounds memory when invoked with a high keycode or button code. This issue can lead to local privileges elevation on systems where the X server is running privileged and remote code execution for ssh X forwarding sessions. (CVE-2022-46341)
A vulnerability was found in X.Org. This security flaw occurs because the handler for the XvdiSelectVideoNotify request may write to memory after it has been freed. This issue can lead to local privileges elevation on systems where the X se (CVE-2022-46342)
A vulnerability was found in X.Org. This security flaw occurs because the handler for the ScreenSaverSetAttributes request may write to memory after it has been freed. This issue can lead to local privileges elevation on systems where the X server is running privileged and remote code execution for ssh X forwarding sessions. (CVE-2022-46343)
A vulnerability was found in X.Org. This security flaw occurs because the handler for the XIChangeProperty request has a length-validation issues, resulting in out-of-bounds memory reads and potential information disclosure. This issue can lead to local privileges elevation on systems where the X server is running privileged and remote code execution for ssh X forwarding sessions. (CVE-2022-46344)
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(172693);
script_version("1.0");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/03/19");
script_cve_id(
"CVE-2022-4283",
"CVE-2022-46340",
"CVE-2022-46341",
"CVE-2022-46342",
"CVE-2022-46343",
"CVE-2022-46344"
);
script_name(english:"EulerOS 2.0 SP10 : xorg-x11-server (EulerOS-SA-2023-1569)");
script_set_attribute(attribute:"synopsis", value:
"The remote EulerOS host is missing multiple security updates.");
script_set_attribute(attribute:"description", value:
"According to the versions of the xorg-x11-server package installed, the EulerOS installation on the remote host is
affected by the following vulnerabilities :
- A vulnerability was found in X.Org. This security flaw occurs because the XkbCopyNames function left a
dangling pointer to freed memory, resulting in out-of-bounds memory access on subsequent XkbGetKbdByName
requests.. This issue can lead to local privileges elevation on systems where the X server is running
privileged and remote code execution for ssh X forwarding sessions. (CVE-2022-4283)
- A vulnerability was found in X.Org. This security flaw occurs becuase the swap handler for the
XTestFakeInput request of the XTest extension may corrupt the stack if GenericEvents with lengths larger
than 32 bytes are sent through a the XTestFakeInput request. This issue can lead to local privileges
elevation on systems where the X server is running privileged and remote code execution for ssh X
forwarding sessions. This issue does not affect systems where client and server use the same byte order.
(CVE-2022-46340)
- A vulnerability was found in X.Org. This security flaw occurs because the handler for the XIPassiveUngrab
request accesses out-of-bounds memory when invoked with a high keycode or button code. This issue can lead
to local privileges elevation on systems where the X server is running privileged and remote code
execution for ssh X forwarding sessions. (CVE-2022-46341)
- A vulnerability was found in X.Org. This security flaw occurs because the handler for the
XvdiSelectVideoNotify request may write to memory after it has been freed. This issue can lead to local
privileges elevation on systems where the X se (CVE-2022-46342)
- A vulnerability was found in X.Org. This security flaw occurs because the handler for the
ScreenSaverSetAttributes request may write to memory after it has been freed. This issue can lead to local
privileges elevation on systems where the X server is running privileged and remote code execution for ssh
X forwarding sessions. (CVE-2022-46343)
- A vulnerability was found in X.Org. This security flaw occurs because the handler for the XIChangeProperty
request has a length-validation issues, resulting in out-of-bounds memory reads and potential information
disclosure. This issue can lead to local privileges elevation on systems where the X server is running
privileged and remote code execution for ssh X forwarding sessions. (CVE-2022-46344)
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-2023-1569
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?8609b5a6");
script_set_attribute(attribute:"solution", value:
"Update the affected xorg-x11-server packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:C/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:L/UI:N/S:U/C:H/I:H/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-2022-46344");
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:"2022/12/14");
script_set_attribute(attribute:"patch_publication_date", value:"2023/03/18");
script_set_attribute(attribute:"plugin_publication_date", value:"2023/03/19");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:xorg-x11-server-help");
script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:2.0");
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) 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/sp");
script_exclude_keys("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 (_release !~ "^EulerOS release 2\.0(\D|$)") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP10");
var sp = get_kb_item("Host/EulerOS/sp");
if (isnull(sp) || sp !~ "^(10)$") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP10");
if (!empty_or_null(uvp)) audit(AUDIT_OS_NOT, "EulerOS 2.0 SP10", "EulerOS UVP " + uvp);
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);
var flag = 0;
var pkgs = [
"xorg-x11-server-help-1.20.8-4.h8.eulerosv2r10"
];
foreach (var pkg in pkgs)
if (rpm_check(release:"EulerOS-2.0", sp:"10", reference:pkg)) 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, "xorg-x11-server");
}
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-4283
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-46340
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-46341
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-46342
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-46343
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-46344
www.nessus.org/u?8609b5a6