CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:N/I:N/A:C
EPSS
Percentile
5.1%
A denial of service flaw was found in the way hypervkvpd processed certain Netlink messages. A local, unprivileged user in a guest (running on Microsoft Hyper-V) could send a Netlink message that, when processed, would cause the guestβs hypervkvpd daemon to exit.
(CVE-2012-5532)
This update also fixes the following bug :
After installing the update, it is recommended to reboot all guest machines.
#%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(66371);
script_version("1.5");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/14");
script_cve_id("CVE-2012-5532");
script_name(english:"Scientific Linux Security Update : hypervkvpd on SL5.x i386/x86_64 (20130509)");
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:
"A denial of service flaw was found in the way hypervkvpd processed
certain Netlink messages. A local, unprivileged user in a guest
(running on Microsoft Hyper-V) could send a Netlink message that, when
processed, would cause the guest's hypervkvpd daemon to exit.
(CVE-2012-5532)
This update also fixes the following bug :
- The hypervkvpd daemon did not close the file descriptors
for pool files when they were updated. This could
eventually lead to hypervkvpd crashing with a 'KVP:
Failed to open file, pool: 1' error after consuming all
available file descriptors. With this update, the file
descriptors are closed, correcting this issue.
After installing the update, it is recommended to reboot all guest
machines."
);
# https://listserv.fnal.gov/scripts/wa.exe?A2=ind1305&L=scientific-linux-errata&T=0&P=303
script_set_attribute(
attribute:"see_also",
value:"http://www.nessus.org/u?ef9b24a1"
);
script_set_attribute(
attribute:"solution",
value:"Update the affected hypervkvpd and / or hypervkvpd-debuginfo packages."
);
script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:C");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:hypervkvpd");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:hypervkvpd-debuginfo");
script_set_attribute(attribute:"cpe", value:"x-cpe:/o:fermilab:scientific_linux");
script_set_attribute(attribute:"vuln_publication_date", value:"2012/12/27");
script_set_attribute(attribute:"patch_publication_date", value:"2013/05/09");
script_set_attribute(attribute:"plugin_publication_date", value:"2013/05/10");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2013-2021 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("misc_func.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");
os_ver = pregmatch(pattern: "Scientific Linux.*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Scientific Linux");
os_ver = os_ver[1];
if (! preg(pattern:"^5([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Scientific Linux 5.x", "Scientific Linux " + os_ver);
if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu >!< "x86_64" && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Scientific Linux", cpu);
flag = 0;
if (rpm_check(release:"SL5", reference:"hypervkvpd-0-0.7.el5_9.3")) flag++;
if (rpm_check(release:"SL5", reference:"hypervkvpd-debuginfo-0-0.7.el5_9.3")) flag++;
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_WARNING,
extra : rpm_report_get()
);
exit(0);
}
else
{
tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, "hypervkvpd / hypervkvpd-debuginfo");
}