CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:L/AC:L/Au:N/C:P/I:N/A:N
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
AI Score
Confidence
High
EPSS
Percentile
15.5%
The remote host is missing an update for the Huawei EulerOS
# SPDX-FileCopyrightText: 2023 Greenbone AG
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-only
if(description)
{
script_oid("1.3.6.1.4.1.25623.1.1.2.2023.1036");
script_cve_id("CVE-2021-3981");
script_tag(name:"creation_date", value:"2023-01-09 15:11:01 +0000 (Mon, 09 Jan 2023)");
script_version("2024-02-05T14:36:57+0000");
script_tag(name:"last_modification", value:"2024-02-05 14:36:57 +0000 (Mon, 05 Feb 2024)");
script_tag(name:"cvss_base", value:"2.1");
script_tag(name:"cvss_base_vector", value:"AV:L/AC:L/Au:N/C:P/I:N/A:N");
script_tag(name:"severity_vector", value:"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N");
script_tag(name:"severity_origin", value:"NVD");
script_tag(name:"severity_date", value:"2022-03-14 23:47:44 +0000 (Mon, 14 Mar 2022)");
script_name("Huawei EulerOS: Security Advisory for grub2 (EulerOS-SA-2023-1036)");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2023 Greenbone AG");
script_family("Huawei EulerOS Local Security Checks");
script_dependencies("gb_huawei_euleros_consolidation.nasl");
script_mandatory_keys("ssh/login/euleros", "ssh/login/rpms", re:"ssh/login/release=EULEROS\-2\.0SP11\-X86_64");
script_xref(name:"Advisory-ID", value:"EulerOS-SA-2023-1036");
script_xref(name:"URL", value:"https://developer.huaweicloud.com/intl/en-us/euleros/securitydetail.html?secId=EulerOS-SA-2023-1036");
script_tag(name:"summary", value:"The remote host is missing an update for the Huawei EulerOS 'grub2' package(s) announced via the EulerOS-SA-2023-1036 advisory.");
script_tag(name:"vuldetect", value:"Checks if a vulnerable package version is present on the target host.");
script_tag(name:"insight", value:"A flaw in grub2 was found where its configuration file, known as grub.cfg, is being created with the wrong permission set allowing non privileged users to read its content. This represents a low severity confidentiality issue, as those users can eventually read any encrypted passwords present in grub.cfg. This flaw affects grub2 2.06 and previous versions. This issue has been fixed in grub upstream but no version with the fix is currently released.(CVE-2021-3981)");
script_tag(name:"affected", value:"'grub2' package(s) on Huawei EulerOS V2.0SP11(x86_64).");
script_tag(name:"solution", value:"Please install the updated package(s).");
script_tag(name:"solution_type", value:"VendorFix");
script_tag(name:"qod_type", value:"package");
exit(0);
}
include("revisions-lib.inc");
include("pkg-lib-rpm.inc");
release = rpm_get_ssh_release();
if(!release)
exit(0);
res = "";
report = "";
if(release == "EULEROS-2.0SP11-x86_64") {
if(!isnull(res = isrpmvuln(pkg:"grub2-common", rpm:"grub2-common~2.06~3.h17.eulerosv2r11", rls:"EULEROS-2.0SP11-x86_64"))) {
report += res;
}
if(!isnull(res = isrpmvuln(pkg:"grub2-efi-x64", rpm:"grub2-efi-x64~2.06~3.h17.eulerosv2r11", rls:"EULEROS-2.0SP11-x86_64"))) {
report += res;
}
if(!isnull(res = isrpmvuln(pkg:"grub2-efi-x64-modules", rpm:"grub2-efi-x64-modules~2.06~3.h17.eulerosv2r11", rls:"EULEROS-2.0SP11-x86_64"))) {
report += res;
}
if(!isnull(res = isrpmvuln(pkg:"grub2-pc", rpm:"grub2-pc~2.06~3.h17.eulerosv2r11", rls:"EULEROS-2.0SP11-x86_64"))) {
report += res;
}
if(!isnull(res = isrpmvuln(pkg:"grub2-pc-modules", rpm:"grub2-pc-modules~2.06~3.h17.eulerosv2r11", rls:"EULEROS-2.0SP11-x86_64"))) {
report += res;
}
if(!isnull(res = isrpmvuln(pkg:"grub2-tools", rpm:"grub2-tools~2.06~3.h17.eulerosv2r11", rls:"EULEROS-2.0SP11-x86_64"))) {
report += res;
}
if(!isnull(res = isrpmvuln(pkg:"grub2-tools-efi", rpm:"grub2-tools-efi~2.06~3.h17.eulerosv2r11", rls:"EULEROS-2.0SP11-x86_64"))) {
report += res;
}
if(!isnull(res = isrpmvuln(pkg:"grub2-tools-extra", rpm:"grub2-tools-extra~2.06~3.h17.eulerosv2r11", rls:"EULEROS-2.0SP11-x86_64"))) {
report += res;
}
if(!isnull(res = isrpmvuln(pkg:"grub2-tools-minimal", rpm:"grub2-tools-minimal~2.06~3.h17.eulerosv2r11", rls:"EULEROS-2.0SP11-x86_64"))) {
report += res;
}
if(report != "") {
security_message(data:report);
} else if(__pkg_match) {
exit(99);
}
exit(0);
}
exit(0);
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:L/AC:L/Au:N/C:P/I:N/A:N
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
AI Score
Confidence
High
EPSS
Percentile
15.5%