The remote OracleVM system is missing necessary patches to address critical security updates :
x86/HVM: only allow ring 0 guest code to make hypercalls Anything else would allow for privilege escalation. This is CVE-2013-4554 / XSA-76. (CVE-2013-4554)
x86: restrict XEN_DOMCTL_getmemlist Coverity ID 1055652 (See the code comment.) This is CVE-2013-4553 / XSA-74.
(CVE-2013-4553)
gnttab: correct locking order reversal Coverity ID 1087189 Correct a lock order reversal between a domains page allocation and grant table locks. This is CVE-2013-4494 / XSA-73.
Consolidate error handling.
Backported to Xen-4.1 (CVE-2013-4494)
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The package checks in this plugin were extracted from OracleVM
# Security Advisory OVMSA-2013-0087.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(79524);
script_version("1.4");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/04");
script_cve_id("CVE-2013-4494", "CVE-2013-4553", "CVE-2013-4554");
script_bugtraq_id(63494, 63931, 63933);
script_name(english:"OracleVM 3.1 : xen (OVMSA-2013-0087)");
script_summary(english:"Checks the RPM output for the updated packages.");
script_set_attribute(
attribute:"synopsis",
value:"The remote OracleVM host is missing one or more security updates."
);
script_set_attribute(
attribute:"description",
value:
"The remote OracleVM system is missing necessary patches to address
critical security updates :
- x86/HVM: only allow ring 0 guest code to make hypercalls
Anything else would allow for privilege escalation. This
is CVE-2013-4554 / XSA-76. (CVE-2013-4554)
- x86: restrict XEN_DOMCTL_getmemlist Coverity ID 1055652
(See the code comment.) This is CVE-2013-4553 / XSA-74.
(CVE-2013-4553)
- gnttab: correct locking order reversal Coverity ID
1087189 Correct a lock order reversal between a domains
page allocation and grant table locks. This is
CVE-2013-4494 / XSA-73.
Consolidate error handling.
Backported to Xen-4.1 (CVE-2013-4494)"
);
# https://oss.oracle.com/pipermail/oraclevm-errata/2013-December/000197.html
script_set_attribute(
attribute:"see_also",
value:"http://www.nessus.org/u?b92b49e7"
);
script_set_attribute(
attribute:"solution",
value:"Update the affected xen / xen-devel / xen-tools packages."
);
script_set_cvss_base_vector("CVSS2#AV:A/AC:M/Au:S/C:N/I:N/A:C");
script_set_cvss_temporal_vector("CVSS2#E:ND/RL:OF/RC:C");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:vm:xen");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:vm:xen-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:vm:xen-tools");
script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:vm_server:3.1");
script_set_attribute(attribute:"vuln_publication_date", value:"2013/11/02");
script_set_attribute(attribute:"patch_publication_date", value:"2013/12/06");
script_set_attribute(attribute:"plugin_publication_date", value:"2014/11/26");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2014-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_family(english:"OracleVM Local Security Checks");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/OracleVM/release", "Host/OracleVM/rpm-list");
exit(0);
}
include("audit.inc");
include("global_settings.inc");
include("rpm.inc");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/OracleVM/release");
if (isnull(release) || "OVS" >!< release) audit(AUDIT_OS_NOT, "OracleVM");
if (! preg(pattern:"^OVS" + "3\.1" + "(\.[0-9]|$)", string:release)) audit(AUDIT_OS_NOT, "OracleVM 3.1", "OracleVM " + release);
if (!get_kb_item("Host/OracleVM/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "OracleVM", cpu);
if ("x86_64" >!< cpu) audit(AUDIT_ARCH_NOT, "x86_64", cpu);
flag = 0;
if (rpm_check(release:"OVS3.1", reference:"xen-4.1.2-18.el5.115")) flag++;
if (rpm_check(release:"OVS3.1", reference:"xen-devel-4.1.2-18.el5.115")) flag++;
if (rpm_check(release:"OVS3.1", reference:"xen-tools-4.1.2-18.el5.115")) flag++;
if (flag)
{
if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
else security_warning(0);
exit(0);
}
else
{
tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, "xen / xen-devel / xen-tools");
}