CVSS2
Attack Vector
ADJACENT_NETWORK
Attack Complexity
MEDIUM
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:A/AC:M/Au:S/C:P/I:N/A:C
EPSS
Percentile
26.7%
three security fixes: integer overflow in several XSM/Flask hypercalls [XSA-84] Off-by-one error in FLASK_AVC_CACHESTAT hypercall [XSA-85] libvchan failure handling malicious ring indexes [XSA-86]
Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Fedora Security Advisory 2014-2188.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(72540);
script_version("1.6");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/11");
script_cve_id("CVE-2014-1891", "CVE-2014-1892", "CVE-2014-1893", "CVE-2014-1894", "CVE-2014-1895", "CVE-2014-1896");
script_bugtraq_id(65414, 65419, 65424);
script_xref(name:"FEDORA", value:"2014-2188");
script_name(english:"Fedora 19 : xen-4.2.3-15.fc19 (2014-2188)");
script_summary(english:"Checks rpm output for the updated package.");
script_set_attribute(
attribute:"synopsis",
value:"The remote Fedora host is missing a security update."
);
script_set_attribute(
attribute:"description",
value:
"three security fixes: integer overflow in several XSM/Flask hypercalls
[XSA-84] Off-by-one error in FLASK_AVC_CACHESTAT hypercall [XSA-85]
libvchan failure handling malicious ring indexes [XSA-86]
Note that Tenable Network Security has extracted the preceding
description block directly from the Fedora security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues."
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.redhat.com/show_bug.cgi?id=1062326"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.redhat.com/show_bug.cgi?id=1062329"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.redhat.com/show_bug.cgi?id=1062331"
);
# https://lists.fedoraproject.org/pipermail/package-announce/2014-February/128429.html
script_set_attribute(
attribute:"see_also",
value:"http://www.nessus.org/u?62988bdd"
);
script_set_attribute(attribute:"solution", value:"Update the affected xen package.");
script_set_cvss_base_vector("CVSS2#AV:A/AC:M/Au:S/C:P/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:fedoraproject:fedora:xen");
script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:19");
script_set_attribute(attribute:"patch_publication_date", value:"2014/02/08");
script_set_attribute(attribute:"plugin_publication_date", value:"2014/02/17");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2014-2021 Tenable Network Security, Inc.");
script_family(english:"Fedora Local Security Checks");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "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) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora");
os_ver = eregmatch(pattern: "Fedora.*release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora");
os_ver = os_ver[1];
if (! ereg(pattern:"^19([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 19.x", "Fedora " + os_ver);
if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Fedora", cpu);
flag = 0;
if (rpm_check(release:"FC19", reference:"xen-4.2.3-15.fc19")) 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");
}
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-1891
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-1892
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-1893
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-1894
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-1895
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-1896
www.nessus.org/u?62988bdd
bugzilla.redhat.com/show_bug.cgi?id=1062326
bugzilla.redhat.com/show_bug.cgi?id=1062329
bugzilla.redhat.com/show_bug.cgi?id=1062331