CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:N/I:N/A:P
EPSS
Percentile
26.7%
It was discovered that the hypervisor’s para-virtualized framebuffer (PVFB) backend failed to validate the frontend’s framebuffer description properly. This could allow a privileged user in the unprivileged domain (DomU) to cause a denial of service, or, possibly, elevate privileges to the privileged domain (Dom0). (CVE-2008-1952)
A flaw was found in the QEMU block format auto-detection, when running fully-virtualized guests and using Qemu images written on removable media (USB storage, 3.5’ disks). Privileged users of such fully-virtualized guests (DomU), with a raw-formatted disk image, were able to write a header to that disk image describing another format.
This could allow such guests to read arbitrary files in their hypervisor’s host (Dom0). (CVE-2008-1945)
Additionally, the following bug is addressed in this update :
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text is (C) Scientific Linux.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(60480);
script_version("1.6");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/14");
script_cve_id("CVE-2008-1945", "CVE-2008-1952");
script_name(english:"Scientific Linux Security Update : xen on SL5.x i386/x86_64");
script_summary(english:"Checks rpm output for the updated packages");
script_set_attribute(
attribute:"synopsis",
value:
"The remote Scientific Linux host is missing one or more security
updates."
);
script_set_attribute(
attribute:"description",
value:
"It was discovered that the hypervisor's para-virtualized framebuffer
(PVFB) backend failed to validate the frontend's framebuffer
description properly. This could allow a privileged user in the
unprivileged domain (DomU) to cause a denial of service, or, possibly,
elevate privileges to the privileged domain (Dom0). (CVE-2008-1952)
A flaw was found in the QEMU block format auto-detection, when running
fully-virtualized guests and using Qemu images written on removable
media (USB storage, 3.5' disks). Privileged users of such
fully-virtualized guests (DomU), with a raw-formatted disk image, were
able to write a header to that disk image describing another format.
This could allow such guests to read arbitrary files in their
hypervisor's host (Dom0). (CVE-2008-1945)
Additionally, the following bug is addressed in this update :
- The qcow-create command terminated when invoked due to
glibc bounds checking on the realpath() function."
);
# https://listserv.fnal.gov/scripts/wa.exe?A2=ind0810&L=scientific-linux-errata&T=0&P=273
script_set_attribute(
attribute:"see_also",
value:"http://www.nessus.org/u?12048dda"
);
script_set_attribute(
attribute:"solution",
value:"Update the affected xen, xen-devel and / or xen-libs packages."
);
script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:N/A:N");
script_cwe_id(119, 200);
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"x-cpe:/o:fermilab:scientific_linux");
script_set_attribute(attribute:"patch_publication_date", value:"2008/10/01");
script_set_attribute(attribute:"plugin_publication_date", value:"2012/08/01");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2012-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_family(english:"Scientific Linux Local Security Checks");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/RedHat/release", "Host/RedHat/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/RedHat/release");
if (isnull(release) || "Scientific Linux " >!< release) audit(AUDIT_HOST_NOT, "running Scientific Linux");
if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu >!< "x86_64" && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Scientific Linux", cpu);
flag = 0;
if (rpm_check(release:"SL5", reference:"xen-3.0.3-64.el5_2.3")) flag++;
if (rpm_check(release:"SL5", reference:"xen-devel-3.0.3-64.el5_2.3")) flag++;
if (rpm_check(release:"SL5", reference:"xen-libs-3.0.3-64.el5_2.3")) flag++;
if (flag)
{
if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
else security_warning(0);
exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");