This update for xen fixes several issues. These security issues were fixed :
bsc#1068187: Failure to recognize errors in the Populate on Demand (PoD) code allowed for DoS (XSA-246)
bsc#1068191: Missing p2m error checking in PoD code allowed unprivileged guests to retain a writable mapping of freed memory leading to information leaks, privilege escalation or DoS (XSA-247).
CVE-2017-15289: The mode4and5 write functions allowed local OS guest privileged users to cause a denial of service (out-of-bounds write access and Qemu process crash) via vectors related to dst calculation (bsc#1063123)
CVE-2017-15597: A grant copy operation being done on a grant of a dying domain allowed a malicious guest administrator to corrupt hypervisor memory, allowing for DoS or potentially privilege escalation and information leaks (bsc#1061075).
CVE-2017-15595: x86 PV guest OS users were able to cause a DoS (unbounded recursion, stack consumption, and hypervisor crash) or possibly gain privileges via crafted page-table stacking (bsc#1061081).
CVE-2017-15592: x86 HVM guest OS users were able to cause a DoS (hypervisor crash) or possibly gain privileges because self-linear shadow mappings were mishandled for translated guests (bsc#1061086).
CVE-2017-13672: The VGA display emulator support allowed local guest OS privileged users to cause a denial of service (out-of-bounds read and QEMU process crash) via vectors involving display update (bsc#1056336)
The update package also includes non-security fixes. See advisory for details.
Note that Tenable Network Security has extracted the preceding description block directly from the SUSE 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 SUSE update advisory SUSE-SU-2017:3239-1.
# The text itself is copyright (C) SUSE.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(105148);
script_version("3.8");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/06");
script_cve_id("CVE-2017-13672", "CVE-2017-15289", "CVE-2017-15592", "CVE-2017-15595", "CVE-2017-15597");
script_name(english:"SUSE SLES12 Security Update : xen (SUSE-SU-2017:3239-1)");
script_summary(english:"Checks rpm output for the updated packages.");
script_set_attribute(
attribute:"synopsis",
value:"The remote SUSE host is missing one or more security updates."
);
script_set_attribute(
attribute:"description",
value:
"This update for xen fixes several issues. These security issues were
fixed :
- bsc#1068187: Failure to recognize errors in the Populate
on Demand (PoD) code allowed for DoS (XSA-246)
- bsc#1068191: Missing p2m error checking in PoD code
allowed unprivileged guests to retain a writable mapping
of freed memory leading to information leaks, privilege
escalation or DoS (XSA-247).
- CVE-2017-15289: The mode4and5 write functions allowed
local OS guest privileged users to cause a denial of
service (out-of-bounds write access and Qemu process
crash) via vectors related to dst calculation
(bsc#1063123)
- CVE-2017-15597: A grant copy operation being done on a
grant of a dying domain allowed a malicious guest
administrator to corrupt hypervisor memory, allowing for
DoS or potentially privilege escalation and information
leaks (bsc#1061075).
- CVE-2017-15595: x86 PV guest OS users were able to cause
a DoS (unbounded recursion, stack consumption, and
hypervisor crash) or possibly gain privileges via
crafted page-table stacking (bsc#1061081).
- CVE-2017-15592: x86 HVM guest OS users were able to
cause a DoS (hypervisor crash) or possibly gain
privileges because self-linear shadow mappings were
mishandled for translated guests (bsc#1061086).
- CVE-2017-13672: The VGA display emulator support allowed
local guest OS privileged users to cause a denial of
service (out-of-bounds read and QEMU process crash) via
vectors involving display update (bsc#1056336)
The update package also includes non-security fixes. See advisory for
details.
Note that Tenable Network Security has extracted the preceding
description block directly from the SUSE 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.suse.com/show_bug.cgi?id=1055047"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.suse.com/show_bug.cgi?id=1056336"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.suse.com/show_bug.cgi?id=1061075"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.suse.com/show_bug.cgi?id=1061081"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.suse.com/show_bug.cgi?id=1061086"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.suse.com/show_bug.cgi?id=1063123"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.suse.com/show_bug.cgi?id=1068187"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.suse.com/show_bug.cgi?id=1068191"
);
script_set_attribute(
attribute:"see_also",
value:"https://www.suse.com/security/cve/CVE-2017-13672/"
);
script_set_attribute(
attribute:"see_also",
value:"https://www.suse.com/security/cve/CVE-2017-15289/"
);
script_set_attribute(
attribute:"see_also",
value:"https://www.suse.com/security/cve/CVE-2017-15592/"
);
script_set_attribute(
attribute:"see_also",
value:"https://www.suse.com/security/cve/CVE-2017-15595/"
);
script_set_attribute(
attribute:"see_also",
value:"https://www.suse.com/security/cve/CVE-2017-15597/"
);
# https://www.suse.com/support/update/announcement/2017/suse-su-20173239-1/
script_set_attribute(
attribute:"see_also",
value:"http://www.nessus.org/u?a563698a"
);
script_set_attribute(
attribute:"solution",
value:
"To install this SUSE Security Update use YaST online_update.
Alternatively you can run the command listed for your product :
SUSE Linux Enterprise Server 12-LTSS:zypper in -t patch
SUSE-SLE-SERVER-12-2017-2019=1
To bring your system up-to-date, use 'zypper patch'."
);
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C");
script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-debugsource");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-doc-html");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-kmp-default");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-kmp-default-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-libs");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-libs-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-tools");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-tools-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-tools-domU");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-tools-domU-debuginfo");
script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:12");
script_set_attribute(attribute:"vuln_publication_date", value:"2017/09/01");
script_set_attribute(attribute:"patch_publication_date", value:"2017/12/08");
script_set_attribute(attribute:"plugin_publication_date", value:"2017/12/11");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2017-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_family(english:"SuSE Local Security Checks");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/SuSE/release", "Host/SuSE/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/SuSE/release");
if (isnull(release) || release !~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "SUSE");
os_ver = pregmatch(pattern: "^(SLE(S|D)\d+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "SUSE");
os_ver = os_ver[1];
if (! preg(pattern:"^(SLES12)$", string:os_ver)) audit(AUDIT_OS_NOT, "SUSE SLES12", "SUSE " + os_ver);
if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu !~ "^i[3-6]86$" && "x86_64" >!< cpu && "s390x" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "SUSE " + os_ver, cpu);
if (cpu >!< "x86_64") audit(AUDIT_ARCH_NOT, "x86_64", cpu);
sp = get_kb_item("Host/SuSE/patchlevel");
if (isnull(sp)) sp = "0";
if (os_ver == "SLES12" && (! preg(pattern:"^(0)$", string:sp))) audit(AUDIT_OS_NOT, "SLES12 SP0", os_ver + " SP" + sp);
flag = 0;
if (rpm_check(release:"SLES12", sp:"0", cpu:"x86_64", reference:"xen-4.4.4_26-22.59.3")) flag++;
if (rpm_check(release:"SLES12", sp:"0", cpu:"x86_64", reference:"xen-debugsource-4.4.4_26-22.59.3")) flag++;
if (rpm_check(release:"SLES12", sp:"0", cpu:"x86_64", reference:"xen-doc-html-4.4.4_26-22.59.3")) flag++;
if (rpm_check(release:"SLES12", sp:"0", cpu:"x86_64", reference:"xen-kmp-default-4.4.4_26_k3.12.61_52.101-22.59.3")) flag++;
if (rpm_check(release:"SLES12", sp:"0", cpu:"x86_64", reference:"xen-kmp-default-debuginfo-4.4.4_26_k3.12.61_52.101-22.59.3")) flag++;
if (rpm_check(release:"SLES12", sp:"0", cpu:"x86_64", reference:"xen-libs-32bit-4.4.4_26-22.59.3")) flag++;
if (rpm_check(release:"SLES12", sp:"0", cpu:"x86_64", reference:"xen-libs-4.4.4_26-22.59.3")) flag++;
if (rpm_check(release:"SLES12", sp:"0", cpu:"x86_64", reference:"xen-libs-debuginfo-32bit-4.4.4_26-22.59.3")) flag++;
if (rpm_check(release:"SLES12", sp:"0", cpu:"x86_64", reference:"xen-libs-debuginfo-4.4.4_26-22.59.3")) flag++;
if (rpm_check(release:"SLES12", sp:"0", cpu:"x86_64", reference:"xen-tools-4.4.4_26-22.59.3")) flag++;
if (rpm_check(release:"SLES12", sp:"0", cpu:"x86_64", reference:"xen-tools-debuginfo-4.4.4_26-22.59.3")) flag++;
if (rpm_check(release:"SLES12", sp:"0", cpu:"x86_64", reference:"xen-tools-domU-4.4.4_26-22.59.3")) flag++;
if (rpm_check(release:"SLES12", sp:"0", cpu:"x86_64", reference:"xen-tools-domU-debuginfo-4.4.4_26-22.59.3")) flag++;
if (flag)
{
if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
else security_hole(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-2017-13672
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-15289
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-15592
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-15595
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-15597
www.nessus.org/u?a563698a
bugzilla.suse.com/show_bug.cgi?id=1055047
bugzilla.suse.com/show_bug.cgi?id=1056336
bugzilla.suse.com/show_bug.cgi?id=1061075
bugzilla.suse.com/show_bug.cgi?id=1061081
bugzilla.suse.com/show_bug.cgi?id=1061086
bugzilla.suse.com/show_bug.cgi?id=1063123
bugzilla.suse.com/show_bug.cgi?id=1068187
bugzilla.suse.com/show_bug.cgi?id=1068191
www.suse.com/security/cve/CVE-2017-13672/
www.suse.com/security/cve/CVE-2017-15289/
www.suse.com/security/cve/CVE-2017-15592/
www.suse.com/security/cve/CVE-2017-15595/
www.suse.com/security/cve/CVE-2017-15597/