CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
Low
EPSS
Percentile
28.9%
It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2023-404 advisory.
A out-of-bounds write flaw was found in the xorg-x11-server. This issue occurs due to an incorrect calculation of a buffer offset when copying data stored in the heap in the XIChangeDeviceProperty function in Xi/xiproperty.c and in RRChangeOutputProperty function in randr/rrproperty.c, allowing for possible escalation of privileges or denial of service. (CVE-2023-5367)
A use-after-free flaw was found in the xorg-x11-server. An X server crash may occur in a very specific and legacy configuration (a multi-screen setup with multiple protocol screens, also known as Zaphod mode) if the pointer is warped from within a window on one screen to the root window of the other screen and if the original window is destroyed followed by another window being destroyed. (CVE-2023-5380)
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 descriptive text and package checks in this plugin were
# extracted from Amazon Linux 2023 Security Advisory ALAS2023-2023-404.
##
include('compat.inc');
if (description)
{
script_id(184431);
script_version("1.0");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/11/04");
script_cve_id("CVE-2023-5367", "CVE-2023-5380");
script_name(english:"Amazon Linux 2023 : xorg-x11-server-common, xorg-x11-server-devel, xorg-x11-server-source (ALAS2023-2023-404)");
script_set_attribute(attribute:"synopsis", value:
"The remote Amazon Linux 2023 host is missing a security update.");
script_set_attribute(attribute:"description", value:
"It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2023-404 advisory.
- A out-of-bounds write flaw was found in the xorg-x11-server. This issue occurs due to an incorrect
calculation of a buffer offset when copying data stored in the heap in the XIChangeDeviceProperty function
in Xi/xiproperty.c and in RRChangeOutputProperty function in randr/rrproperty.c, allowing for possible
escalation of privileges or denial of service. (CVE-2023-5367)
- A use-after-free flaw was found in the xorg-x11-server. An X server crash may occur in a very specific and
legacy configuration (a multi-screen setup with multiple protocol screens, also known as Zaphod mode) if
the pointer is warped from within a window on one screen to the root window of the other screen and if the
original window is destroyed followed by another window being destroyed. (CVE-2023-5380)
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://alas.aws.amazon.com/AL2023/ALAS-2023-404.html");
script_set_attribute(attribute:"see_also", value:"https://alas.aws.amazon.com/cve/html/CVE-2023-5367.html");
script_set_attribute(attribute:"see_also", value:"https://alas.aws.amazon.com/cve/html/CVE-2023-5380.html");
script_set_attribute(attribute:"see_also", value:"https://alas.aws.amazon.com/faqs.html");
script_set_attribute(attribute:"solution", value:
"Run 'dnf update xorg-x11-server --releasever 2023.2.20231030' to update your system.");
script_set_cvss_base_vector("CVSS2#AV:L/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:L/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-2023-5367");
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:"2023/10/25");
script_set_attribute(attribute:"patch_publication_date", value:"2023/10/30");
script_set_attribute(attribute:"plugin_publication_date", value:"2023/11/04");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:xorg-x11-server-Xdmx");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:xorg-x11-server-Xdmx-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:xorg-x11-server-Xephyr");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:xorg-x11-server-Xephyr-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:xorg-x11-server-Xnest");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:xorg-x11-server-Xnest-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:xorg-x11-server-Xorg");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:xorg-x11-server-Xorg-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:xorg-x11-server-Xvfb");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:xorg-x11-server-Xvfb-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:xorg-x11-server-common");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:xorg-x11-server-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:xorg-x11-server-debugsource");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:xorg-x11-server-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:xorg-x11-server-source");
script_set_attribute(attribute:"cpe", value:"cpe:/o:amazon:linux:2023");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Amazon Linux 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/AmazonLinux/release", "Host/AmazonLinux/rpm-list");
exit(0);
}
include("rpm.inc");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var alas_release = get_kb_item("Host/AmazonLinux/release");
if (isnull(alas_release) || !strlen(alas_release)) audit(AUDIT_OS_NOT, "Amazon Linux");
var os_ver = pregmatch(pattern: "^AL(A|\d+|-\d+)", string:alas_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Amazon Linux");
os_ver = os_ver[1];
if (os_ver != "-2023")
{
if (os_ver == 'A') os_ver = 'AMI';
audit(AUDIT_OS_NOT, "Amazon Linux 2023", "Amazon Linux " + os_ver);
}
if (!get_kb_item("Host/AmazonLinux/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
var pkgs = [
{'reference':'xorg-x11-server-common-1.20.14-26.amzn2023.0.1', 'cpu':'aarch64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
{'reference':'xorg-x11-server-common-1.20.14-26.amzn2023.0.1', 'cpu':'x86_64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
{'reference':'xorg-x11-server-debuginfo-1.20.14-26.amzn2023.0.1', 'cpu':'aarch64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
{'reference':'xorg-x11-server-debuginfo-1.20.14-26.amzn2023.0.1', 'cpu':'x86_64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
{'reference':'xorg-x11-server-debugsource-1.20.14-26.amzn2023.0.1', 'cpu':'aarch64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
{'reference':'xorg-x11-server-debugsource-1.20.14-26.amzn2023.0.1', 'cpu':'x86_64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
{'reference':'xorg-x11-server-devel-1.20.14-26.amzn2023.0.1', 'cpu':'aarch64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
{'reference':'xorg-x11-server-devel-1.20.14-26.amzn2023.0.1', 'cpu':'x86_64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
{'reference':'xorg-x11-server-source-1.20.14-26.amzn2023.0.1', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
{'reference':'xorg-x11-server-Xdmx-1.20.14-26.amzn2023.0.1', 'cpu':'aarch64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
{'reference':'xorg-x11-server-Xdmx-1.20.14-26.amzn2023.0.1', 'cpu':'x86_64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
{'reference':'xorg-x11-server-Xdmx-debuginfo-1.20.14-26.amzn2023.0.1', 'cpu':'aarch64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
{'reference':'xorg-x11-server-Xdmx-debuginfo-1.20.14-26.amzn2023.0.1', 'cpu':'x86_64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
{'reference':'xorg-x11-server-Xephyr-1.20.14-26.amzn2023.0.1', 'cpu':'aarch64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
{'reference':'xorg-x11-server-Xephyr-1.20.14-26.amzn2023.0.1', 'cpu':'x86_64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
{'reference':'xorg-x11-server-Xephyr-debuginfo-1.20.14-26.amzn2023.0.1', 'cpu':'aarch64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
{'reference':'xorg-x11-server-Xephyr-debuginfo-1.20.14-26.amzn2023.0.1', 'cpu':'x86_64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
{'reference':'xorg-x11-server-Xnest-1.20.14-26.amzn2023.0.1', 'cpu':'aarch64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
{'reference':'xorg-x11-server-Xnest-1.20.14-26.amzn2023.0.1', 'cpu':'x86_64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
{'reference':'xorg-x11-server-Xnest-debuginfo-1.20.14-26.amzn2023.0.1', 'cpu':'aarch64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
{'reference':'xorg-x11-server-Xnest-debuginfo-1.20.14-26.amzn2023.0.1', 'cpu':'x86_64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
{'reference':'xorg-x11-server-Xorg-1.20.14-26.amzn2023.0.1', 'cpu':'aarch64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
{'reference':'xorg-x11-server-Xorg-1.20.14-26.amzn2023.0.1', 'cpu':'x86_64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
{'reference':'xorg-x11-server-Xorg-debuginfo-1.20.14-26.amzn2023.0.1', 'cpu':'aarch64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
{'reference':'xorg-x11-server-Xorg-debuginfo-1.20.14-26.amzn2023.0.1', 'cpu':'x86_64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
{'reference':'xorg-x11-server-Xvfb-1.20.14-26.amzn2023.0.1', 'cpu':'aarch64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
{'reference':'xorg-x11-server-Xvfb-1.20.14-26.amzn2023.0.1', 'cpu':'x86_64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
{'reference':'xorg-x11-server-Xvfb-debuginfo-1.20.14-26.amzn2023.0.1', 'cpu':'aarch64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
{'reference':'xorg-x11-server-Xvfb-debuginfo-1.20.14-26.amzn2023.0.1', 'cpu':'x86_64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE}
];
var flag = 0;
foreach var package_array ( pkgs ) {
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 = 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 (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, "xorg-x11-server-Xdmx / xorg-x11-server-Xdmx-debuginfo / xorg-x11-server-Xephyr / etc");
}
Vendor | Product | Version | CPE |
---|---|---|---|
amazon | linux | xorg-x11-server-xephyr | p-cpe:/a:amazon:linux:xorg-x11-server-xephyr |
amazon | linux | xorg-x11-server-xvfb-debuginfo | p-cpe:/a:amazon:linux:xorg-x11-server-xvfb-debuginfo |
amazon | linux | xorg-x11-server-xdmx-debuginfo | p-cpe:/a:amazon:linux:xorg-x11-server-xdmx-debuginfo |
amazon | linux | xorg-x11-server-debuginfo | p-cpe:/a:amazon:linux:xorg-x11-server-debuginfo |
amazon | linux | xorg-x11-server-xephyr-debuginfo | p-cpe:/a:amazon:linux:xorg-x11-server-xephyr-debuginfo |
amazon | linux | xorg-x11-server-common | p-cpe:/a:amazon:linux:xorg-x11-server-common |
amazon | linux | xorg-x11-server-devel | p-cpe:/a:amazon:linux:xorg-x11-server-devel |
amazon | linux | xorg-x11-server-xnest-debuginfo | p-cpe:/a:amazon:linux:xorg-x11-server-xnest-debuginfo |
amazon | linux | xorg-x11-server-xdmx | p-cpe:/a:amazon:linux:xorg-x11-server-xdmx |
amazon | linux | xorg-x11-server-source | p-cpe:/a:amazon:linux:xorg-x11-server-source |
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
Low
EPSS
Percentile
28.9%