SUSE: Security Advisory (SUSE-SU-2017:2326-1)

# 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("1.3.6.1.4.1.25623.1.1.4.2017.2326.1");
  script_cve_id("CVE-2016-9603", "CVE-2017-10664", "CVE-2017-11434", "CVE-2017-12135", "CVE-2017-12136", "CVE-2017-12137", "CVE-2017-12855");
  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:"9.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:S/C:C/I:C/A:C");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/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:"2018-09-06 14:29:43 +0000 (Thu, 06 Sep 2018)");

  script_name("SUSE: Security Advisory (SUSE-SU-2017:2326-1)");
  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\.0SP2)");

  script_xref(name:"Advisory-ID", value:"SUSE-SU-2017:2326-1");
  script_xref(name:"URL", value:"https://www.suse.com/support/update/announcement/2017/suse-su-20172326-1.html");
  script_xref(name:"URL", value:"https://bugzilla.suse.com/1002573");
  script_xref(name:"URL", value:"https://bugzilla.suse.com/1026236");
  script_xref(name:"URL", value:"https://bugzilla.suse.com/1035231");
  script_xref(name:"URL", value:"https://bugzilla.suse.com/1037840");
  script_xref(name:"URL", value:"https://bugzilla.suse.com/1046637");
  script_xref(name:"URL", value:"https://bugzilla.suse.com/1049578");
  script_xref(name:"URL", value:"https://bugzilla.suse.com/1051787");
  script_xref(name:"URL", value:"https://bugzilla.suse.com/1051788");
  script_xref(name:"URL", value:"https://bugzilla.suse.com/1051789");
  script_xref(name:"URL", value:"https://bugzilla.suse.com/1052686");
  script_xref(name:"URL", value:"https://bugzilla.suse.com/1055695");
  script_xref(name:"URL", value:"https://lists.suse.com/pipermail/sle-security-updates/2017-September/003179.html");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'xen' package(s) announced via the SUSE-SU-2017:2326-1 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 to version 4.7.3 fixes several issues.

These security issues were fixed:

- CVE-2017-12135: Unbounded recursion in grant table code allowed a malicious
 guest to crash the host or potentially escalate privileges/leak information
 (XSA-226, bsc#1051787).
- CVE-2017-12137: Incorrectly-aligned updates to pagetables allowed for
 privilege escalation (XSA-227, bsc#1051788).
- CVE-2017-12136: Race conditions with maptrack free list handling allows a
 malicious guest administrator to crash the host or escalate their privilege to
 that of the host (XSA-228, bsc#1051789).
- CVE-2017-11434: The dhcp_decode function in slirp/bootp.c allowed local guest
 OS users to cause a denial of service (out-of-bounds read) via a crafted DHCP
 options string (bsc#1049578).
- CVE-2017-10664: qemu-nbd did not ignore SIGPIPE, which allowed remote
 attackers to cause a denial of service (daemon crash) by disconnecting during a
 server-to-client reply attempt (bsc#1046637).
- CVE-2017-12855: Premature clearing of GTF_writing / GTF_reading lead to
 potentially leaking sensitive information (XSA-230 CVE-2017-12855).

These non-security issues were fixed:

- bsc#1055695: XEN: 11SP4 and 12SP3 HVM guests can not be restored after the save using xl stack
- bsc#1035231: Migration of HVM domU did not use superpages on destination dom0
- bsc#1002573: Optimized LVM functions in block-dmmd block-dmmd
- bsc#1037840: Xen-detect always showed HVM for PV guests");

  script_tag(name:"affected", value:"'xen' package(s) on SUSE Linux Enterprise Desktop 12-SP2, SUSE Linux Enterprise Server 12-SP2, SUSE Linux Enterprise Server for SAP Applications 12-SP2.");

  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 == "SLES12.0SP2") {

  if(!isnull(res = isrpmvuln(pkg:"xen", rpm:"xen~4.7.3_03~43.9.1", rls:"SLES12.0SP2"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"xen-doc-html", rpm:"xen-doc-html~4.7.3_03~43.9.1", rls:"SLES12.0SP2"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"xen-libs-32bit", rpm:"xen-libs-32bit~4.7.3_03~43.9.1", rls:"SLES12.0SP2"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"xen-libs", rpm:"xen-libs~4.7.3_03~43.9.1", rls:"SLES12.0SP2"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"xen-tools", rpm:"xen-tools~4.7.3_03~43.9.1", rls:"SLES12.0SP2"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"xen-tools-domU", rpm:"xen-tools-domU~4.7.3_03~43.9.1", rls:"SLES12.0SP2"))) {
    report += res;
  }

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

exit(0);