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
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 use-after-free vulnerability was found in the ProcRenderAddGlyphs() function of Xorg servers. This issue occurs when AllocateGlyph() is called to store new glyphs sent by the client to the X server, potentially resulting in multiple entries pointing to the same non-refcounted glyphs. Consequently, ProcRenderAddGlyphs() may free a glyph, leading to a use-after-free scenario when the same glyph pointer is subsequently accessed. This flaw allows an authenticated attacker to execute arbitrary code on the system by sending a specially crafted request.(CVE-2024-31083)
A heap-based buffer over-read vulnerability was found in the X.org server's ProcAppleDRICreatePixmap() function. This issue occurs when byte-swapped length values are used in replies, potentially leading to memory leakage and segmentation faults, particularly when triggered by a client with a different endianness. This vulnerability could be exploited by an attacker to cause the X server to read heap memory values and then transmit them back to the client until encountering an unmapped page, resulting in a crash. Despite the attacker's inability to control the specific memory copied into the replies, the small length values typically stored in a 32-bit integer can result in significant attempted out-of-bounds reads.(CVE-2024-31082)
A heap-based buffer over-read vulnerability was found in the X.org server's ProcXIPassiveGrabDevice() function. This issue occurs when byte-swapped length values are used in replies, potentially leading to memory leakage and segmentation faults, particularly when triggered by a client with a different endianness. This vulnerability could be exploited by an attacker to cause the X server to read heap memory values and then transmit them back to the client until encountering an unmapped page, resulting in a crash. Despite the attacker's inability to control the specific memory copied into the replies, the small length values typically stored in a 32-bit integer can result in significant attempted out-of-bounds reads.(CVE-2024-31081)
A heap-based buffer over-read vulnerability was found in the X.org server's ProcXIGetSelectedEvents() function. This issue occurs when byte-swapped length values are used in replies, potentially leading to memory leakage and segmentation faults, particularly when triggered by a client with a different endianness. This vulnerability could be exploited by an attacker to cause the X server to read heap memory values and then transmit them back to the client until encountering an unmapped page, resulting in a crash. Despite the attacker's inability to control the specific memory copied into the replies, the small length values typically stored in a 32-bit integer can result in significant attempted out-of-bounds reads.(CVE-2024-31080)
Tenable has extracted the preceding description block directly from the EulerOS xorg-x11-server security advisory.
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.
##
include('compat.inc');
if (description)
{
script_id(205942);
script_version("1.1");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/08/20");
script_cve_id(
"CVE-2024-31080",
"CVE-2024-31081",
"CVE-2024-31082",
"CVE-2024-31083"
);
script_name(english:"EulerOS 2.0 SP12 : xorg-x11-server (EulerOS-SA-2024-2231)");
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 use-after-free vulnerability was found in the ProcRenderAddGlyphs() function of Xorg servers. This issue
occurs when AllocateGlyph() is called to store new glyphs sent by the client to the X server, potentially
resulting in multiple entries pointing to the same non-refcounted glyphs. Consequently,
ProcRenderAddGlyphs() may free a glyph, leading to a use-after-free scenario when the same glyph pointer
is subsequently accessed. This flaw allows an authenticated attacker to execute arbitrary code on the
system by sending a specially crafted request.(CVE-2024-31083)
A heap-based buffer over-read vulnerability was found in the X.org server's ProcAppleDRICreatePixmap()
function. This issue occurs when byte-swapped length values are used in replies, potentially leading to
memory leakage and segmentation faults, particularly when triggered by a client with a different
endianness. This vulnerability could be exploited by an attacker to cause the X server to read heap memory
values and then transmit them back to the client until encountering an unmapped page, resulting in a
crash. Despite the attacker's inability to control the specific memory copied into the replies, the small
length values typically stored in a 32-bit integer can result in significant attempted out-of-bounds
reads.(CVE-2024-31082)
A heap-based buffer over-read vulnerability was found in the X.org server's ProcXIPassiveGrabDevice()
function. This issue occurs when byte-swapped length values are used in replies, potentially leading to
memory leakage and segmentation faults, particularly when triggered by a client with a different
endianness. This vulnerability could be exploited by an attacker to cause the X server to read heap memory
values and then transmit them back to the client until encountering an unmapped page, resulting in a
crash. Despite the attacker's inability to control the specific memory copied into the replies, the small
length values typically stored in a 32-bit integer can result in significant attempted out-of-bounds
reads.(CVE-2024-31081)
A heap-based buffer over-read vulnerability was found in the X.org server's ProcXIGetSelectedEvents()
function. This issue occurs when byte-swapped length values are used in replies, potentially leading to
memory leakage and segmentation faults, particularly when triggered by a client with a different
endianness. This vulnerability could be exploited by an attacker to cause the X server to read heap memory
values and then transmit them back to the client until encountering an unmapped page, resulting in a
crash. Despite the attacker's inability to control the specific memory copied into the replies, the small
length values typically stored in a 32-bit integer can result in significant attempted out-of-bounds
reads.(CVE-2024-31080)
Tenable has extracted the preceding description block directly from the EulerOS xorg-x11-server security advisory.
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
# https://developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2024-2231
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?6c73f4f1");
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:P/I:P/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-2024-31081");
script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2024-31083");
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:"2024/04/04");
script_set_attribute(attribute:"patch_publication_date", value:"2024/08/20");
script_set_attribute(attribute:"plugin_publication_date", value:"2024/08/20");
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) 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/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|$)") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP12");
var sp = get_kb_item("Host/EulerOS/sp");
if (isnull(sp) || sp !~ "^(12)$") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP12");
if (!empty_or_null(uvp)) audit(AUDIT_OS_NOT, "EulerOS 2.0 SP12", "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-1.20.11-13.h8.eulerosv2r12"
];
foreach (var pkg in pkgs)
if (rpm_check(release:"EulerOS-2.0", sp:"12", 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");
}