5.9 Medium
CVSS2
Attack Vector
LOCAL
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:P/I:P/A:C
7.8 High
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
6.5 Medium
AI Score
Confidence
High
0.0004 Low
EPSS
Percentile
15.6%
The remote host is missing an update for the Debian
# SPDX-FileCopyrightText: 2021 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("1.3.6.1.4.1.25623.1.0.704888");
script_cve_id("CVE-2021-26933", "CVE-2021-27379");
script_tag(name:"creation_date", value:"2021-04-12 03:00:12 +0000 (Mon, 12 Apr 2021)");
script_version("2024-02-02T05:06:07+0000");
script_tag(name:"last_modification", value:"2024-02-02 05:06:07 +0000 (Fri, 02 Feb 2024)");
script_tag(name:"cvss_base", value:"5.9");
script_tag(name:"cvss_base_vector", value:"AV:L/AC:M/Au:N/C:P/I:P/A:C");
script_tag(name:"severity_vector", value:"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
script_tag(name:"severity_origin", value:"NVD");
script_tag(name:"severity_date", value:"2021-02-24 15:27:05 +0000 (Wed, 24 Feb 2021)");
script_name("Debian: Security Advisory (DSA-4888-1)");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2021 Greenbone AG");
script_family("Debian Local Security Checks");
script_dependencies("gather-package-list.nasl");
script_mandatory_keys("ssh/login/debian_linux", "ssh/login/packages", re:"ssh/login/release=DEB10");
script_xref(name:"Advisory-ID", value:"DSA-4888-1");
script_xref(name:"URL", value:"https://www.debian.org/security/2021/DSA-4888-1");
script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/DSA-4888");
script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/xen");
script_tag(name:"summary", value:"The remote host is missing an update for the Debian 'xen' package(s) announced via the DSA-4888-1 advisory.");
script_tag(name:"vuldetect", value:"Checks if a vulnerable package version is present on the target host.");
script_tag(name:"insight", value:"Multiple vulnerabilities have been discovered in the Xen hypervisor, which could result in denial of service, privilege escalation or memory disclosure.
For the stable distribution (buster), these problems have been fixed in version 4.11.4+99-g8bce4698f6-1.
We recommend that you upgrade your xen packages.
For the detailed security status of xen please refer to its security tracker page at: [link moved to references]");
script_tag(name:"affected", value:"'xen' package(s) on Debian 10.");
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-deb.inc");
release = dpkg_get_ssh_release();
if(!release)
exit(0);
res = "";
report = "";
if(release == "DEB10") {
if(!isnull(res = isdpkgvuln(pkg:"libxen-dev", ver:"4.11.4+99-g8bce4698f6-1", rls:"DEB10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libxencall1", ver:"4.11.4+99-g8bce4698f6-1", rls:"DEB10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libxendevicemodel1", ver:"4.11.4+99-g8bce4698f6-1", rls:"DEB10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libxenevtchn1", ver:"4.11.4+99-g8bce4698f6-1", rls:"DEB10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libxenforeignmemory1", ver:"4.11.4+99-g8bce4698f6-1", rls:"DEB10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libxengnttab1", ver:"4.11.4+99-g8bce4698f6-1", rls:"DEB10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libxenmisc4.11", ver:"4.11.4+99-g8bce4698f6-1", rls:"DEB10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libxenstore3.0", ver:"4.11.4+99-g8bce4698f6-1", rls:"DEB10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libxentoolcore1", ver:"4.11.4+99-g8bce4698f6-1", rls:"DEB10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libxentoollog1", ver:"4.11.4+99-g8bce4698f6-1", rls:"DEB10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"xen-doc", ver:"4.11.4+99-g8bce4698f6-1", rls:"DEB10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"xen-hypervisor-4.11-amd64", ver:"4.11.4+99-g8bce4698f6-1", rls:"DEB10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"xen-hypervisor-4.11-arm64", ver:"4.11.4+99-g8bce4698f6-1", rls:"DEB10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"xen-hypervisor-4.11-armhf", ver:"4.11.4+99-g8bce4698f6-1", rls:"DEB10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"xen-hypervisor-common", ver:"4.11.4+99-g8bce4698f6-1", rls:"DEB10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"xen-system-amd64", ver:"4.11.4+99-g8bce4698f6-1", rls:"DEB10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"xen-system-arm64", ver:"4.11.4+99-g8bce4698f6-1", rls:"DEB10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"xen-system-armhf", ver:"4.11.4+99-g8bce4698f6-1", rls:"DEB10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"xen-utils-4.11", ver:"4.11.4+99-g8bce4698f6-1", rls:"DEB10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"xen-utils-common", ver:"4.11.4+99-g8bce4698f6-1", rls:"DEB10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"xenstore-utils", ver:"4.11.4+99-g8bce4698f6-1", rls:"DEB10"))) {
report += res;
}
if(report != "") {
security_message(data:report);
} else if(__pkg_match) {
exit(99);
}
exit(0);
}
exit(0);
5.9 Medium
CVSS2
Attack Vector
LOCAL
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:P/I:P/A:C
7.8 High
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
6.5 Medium
AI Score
Confidence
High
0.0004 Low
EPSS
Percentile
15.6%