SUSE: Security Advisory (SUSE-SU-2016:2473-1)

# SPDX-FileCopyrightText: 2021 Greenbone AG
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-only

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.1.4.2016.2473.1");
  script_cve_id("CVE-2016-6258", "CVE-2016-6259", "CVE-2016-6833", "CVE-2016-6834", "CVE-2016-6835", "CVE-2016-6836", "CVE-2016-6888", "CVE-2016-7092", "CVE-2016-7093", "CVE-2016-7094");
  script_tag(name:"creation_date", value:"2021-04-19 00:00:00 +0000 (Mon, 19 Apr 2021)");
  script_version("2025-08-15T15:42:25+0000");
  script_tag(name:"last_modification", value:"2025-08-15 15:42:25 +0000 (Fri, 15 Aug 2025)");
  script_tag(name:"cvss_base", value:"7.2");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:L/Au:N/C:C/I:C/A:C");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2016-09-21 18:48:04 +0000 (Wed, 21 Sep 2016)");

  script_name("SUSE: Security Advisory (SUSE-SU-2016:2473-1)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2021 Greenbone AG");
  script_family("SuSE Local Security Checks");
  script_dependencies("gather-package-list.nasl");
  script_mandatory_keys("ssh/login/suse_sles", "ssh/login/rpms", re:"ssh/login/release=(SLES12\.0SP1)");

  script_xref(name:"Advisory-ID", value:"SUSE-SU-2016:2473-1");
  script_xref(name:"URL", value:"https://www.suse.com/support/update/announcement/2016/suse-su-20162473-1.html");
  script_xref(name:"URL", value:"https://bugzilla.suse.com/953518");
  script_xref(name:"URL", value:"https://bugzilla.suse.com/955104");
  script_xref(name:"URL", value:"https://bugzilla.suse.com/959330");
  script_xref(name:"URL", value:"https://bugzilla.suse.com/959552");
  script_xref(name:"URL", value:"https://bugzilla.suse.com/970135");
  script_xref(name:"URL", value:"https://bugzilla.suse.com/971949");
  script_xref(name:"URL", value:"https://bugzilla.suse.com/988675");
  script_xref(name:"URL", value:"https://bugzilla.suse.com/988676");
  script_xref(name:"URL", value:"https://bugzilla.suse.com/990500");
  script_xref(name:"URL", value:"https://bugzilla.suse.com/990970");
  script_xref(name:"URL", value:"https://bugzilla.suse.com/991934");
  script_xref(name:"URL", value:"https://bugzilla.suse.com/992224");
  script_xref(name:"URL", value:"https://bugzilla.suse.com/993665");
  script_xref(name:"URL", value:"https://bugzilla.suse.com/994421");
  script_xref(name:"URL", value:"https://bugzilla.suse.com/994625");
  script_xref(name:"URL", value:"https://bugzilla.suse.com/994761");
  script_xref(name:"URL", value:"https://bugzilla.suse.com/994772");
  script_xref(name:"URL", value:"https://bugzilla.suse.com/994775");
  script_xref(name:"URL", value:"https://bugzilla.suse.com/995785");
  script_xref(name:"URL", value:"https://bugzilla.suse.com/995789");
  script_xref(name:"URL", value:"https://bugzilla.suse.com/995792");
  script_xref(name:"URL", value:"https://lists.suse.com/pipermail/sle-security-updates/2016-October/002317.html");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'xen' package(s) announced via the SUSE-SU-2016:2473-1 advisory.");

  script_tag(name:"vuldetect", value:"Checks if a vulnerable package version is present on the target host.");

  script_tag(name:"insight", value:"This update for xen fixes several issues.

These security issues were fixed:
- CVE-2016-7092: The get_page_from_l3e function in arch/x86/mm.c in Xen allowed local 32-bit PV guest OS administrators to gain host OS privileges via vectors related to L3 recursive pagetables (bsc#995785).
- CVE-2016-7093: Xen allowed local HVM guest OS administrators to overwrite hypervisor memory and consequently gain host OS privileges by leveraging mishandling of instruction pointer truncation during emulation (bsc#995789).
- CVE-2016-7094: Buffer overflow in Xen allowed local x86 HVM guest OS administrators on guests running with shadow paging to cause a denial of service via a pagetable update (bsc#995792).
- CVE-2016-6836: Information leakage in vmxnet3_complete_packet (bsc#994761).
- CVE-2016-6888: Integer overflow in packet initialisation in VMXNET3 device driver. Aprivileged user inside guest c... (bsc#994772).
- CVE-2016-6833: Use after free while writing (bsc#994775).
- CVE-2016-6835: Buffer overflow in vmxnet_tx_pkt_parse_headers() in vmxnet3 deviceemulation. (bsc#994625).
- CVE-2016-6834: An infinite loop during packet fragmentation (bsc#994421).
- CVE-2016-6258: The PV pagetable code in arch/x86/mm.c in Xen allowed local 32-bit PV guest OS administrators to gain host OS privileges by leveraging fast-paths for updating pagetable entries (bsc#988675).
- CVE-2016-6259: Xen did not implement Supervisor Mode Access Prevention (SMAP) whitelisting in 32-bit exception and event delivery, which allowed local 32-bit PV guest OS kernels to cause a denial of service (hypervisor and VM crash) by triggering a safety check (bsc#988676).

These non-security issues were fixed:
- bsc#991934: Hypervisor crash in csched_acct
- bsc#992224: During boot of Xen Hypervisor, failed to get contiguous memory for DMA
- bsc#955104: Virsh reports error 'one or more references were leaked after disconnect from hypervisor' when 'virsh save' failed due to 'no response from client after 6 keepalive messages'
- bsc#959552: Migration of HVM guest leads into libvirt segmentation fault
- bsc#993665: Migration of xen guests finishes in: One or more references were leaked after disconnect from the hypervisor
- bsc#959330: Guest migrations using virsh results in error 'Internal error: received hangup / error event on socket'
- bsc#990500: VM virsh migration fails with keepalive error: ':virKeepAliveTimerInternal:143 : No response from client'
- bsc#953518: Unplug also SCSI disks in qemu-xen-traditional for upstream unplug protocol
- bsc#953518: xen_platform: unplug also SCSI disks in qemu-xen
- bsc#971949: xl: Support (by ignoring) xl migrate --live. xl migrations are always live
- bsc#970135: New virtualization project clock test randomly fails on Xen
- bsc#990970: Add PMU support for Intel E7-8867 v4 (fam=6, model=79)");

  script_tag(name:"affected", value:"'xen' package(s) on SUSE Linux Enterprise Desktop 12-SP1, SUSE Linux Enterprise Server 12-SP1, SUSE Linux Enterprise Server for SAP Applications 12-SP1.");

  script_tag(name:"solution", value:"Please install the updated package(s).");

  script_tag(name:"solution_type", value:"VendorFix");
  script_tag(name:"qod_type", value:"package");

  exit(0);
}

include("revisions-lib.inc");
include("pkg-lib-rpm.inc");

release = rpm_get_ssh_release();
if(!release)
  exit(0);

res = "";
report = "";

if(release == "SLES12.0SP1") {

  if(!isnull(res = isrpmvuln(pkg:"xen", rpm:"xen~4.5.3_10~20.1", rls:"SLES12.0SP1"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"xen-doc-html", rpm:"xen-doc-html~4.5.3_10~20.1", rls:"SLES12.0SP1"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"xen-kmp-default", rpm:"xen-kmp-default~4.5.3_10_k3.12.62_60.62~20.1", rls:"SLES12.0SP1"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"xen-libs-32bit", rpm:"xen-libs-32bit~4.5.3_10~20.1", rls:"SLES12.0SP1"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"xen-libs", rpm:"xen-libs~4.5.3_10~20.1", rls:"SLES12.0SP1"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"xen-tools", rpm:"xen-tools~4.5.3_10~20.1", rls:"SLES12.0SP1"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"xen-tools-domU", rpm:"xen-tools-domU~4.5.3_10~20.1", rls:"SLES12.0SP1"))) {
    report += res;
  }

  if(report != "") {
    security_message(data:report);
  } else if(__pkg_match) {
    exit(99);
  }
  exit(0);
}

exit(0);