SUSE: Security Advisory (SUSE-SU-2018:3081-1)

# 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("1.3.6.1.4.1.25623.1.1.4.2018.3081.1");
  script_cve_id("CVE-2017-18258", "CVE-2018-14404", "CVE-2018-14567", "CVE-2018-9251");
  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:"5.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2018-09-18 16:59:15 +0000 (Tue, 18 Sep 2018)");

  script_name("SUSE: Security Advisory (SUSE-SU-2018:3081-1)");
  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\.0SP3)");

  script_xref(name:"Advisory-ID", value:"SUSE-SU-2018:3081-1");
  script_xref(name:"URL", value:"https://www.suse.com/support/update/announcement/2018/suse-su-20183081-1.html");
  script_xref(name:"URL", value:"https://bugzilla.suse.com/1088279");
  script_xref(name:"URL", value:"https://bugzilla.suse.com/1088601");
  script_xref(name:"URL", value:"https://bugzilla.suse.com/1102046");
  script_xref(name:"URL", value:"https://bugzilla.suse.com/1105166");
  script_xref(name:"URL", value:"https://lists.suse.com/pipermail/sle-security-updates/2018-October/004657.html");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'libxml2' package(s) announced via the SUSE-SU-2018:3081-1 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 libxml2 fixes the following security issues:

- CVE-2018-9251: The xz_decomp function allowed remote attackers to cause a
 denial of service (infinite loop) via a crafted XML file that triggers
 LZMA_MEMLIMIT_ERROR, as demonstrated by xmllint (bsc#1088279).
- CVE-2018-14567: Prevent denial of service (infinite loop) via a crafted XML
 file that triggers LZMA_MEMLIMIT_ERROR, as demonstrated by xmllint
 (bsc#1105166).
- CVE-2018-14404: Prevent NULL pointer dereference in the xmlXPathCompOpEval()
 function when parsing an invalid XPath expression in the XPATH_OP_AND or
 XPATH_OP_OR case leading to a denial of service attack (bsc#1102046).
- CVE-2017-18258: The xz_head function allowed remote attackers to cause a
 denial of service (memory consumption) via a crafted LZMA file, because the
 decoder functionality did not restrict memory usage to what is required for a
 legitimate file (bsc#1088601).");

  script_tag(name:"affected", value:"'libxml2' package(s) on SUSE Linux Enterprise Desktop 12-SP3, SUSE Linux Enterprise Server 12-SP3, SUSE Linux Enterprise Server for SAP Applications 12-SP3.");

  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 == "SLES12.0SP3") {

  if(!isnull(res = isrpmvuln(pkg:"libxml2-2", rpm:"libxml2-2~2.9.4~46.15.1", rls:"SLES12.0SP3"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"libxml2-2-32bit", rpm:"libxml2-2-32bit~2.9.4~46.15.1", rls:"SLES12.0SP3"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"libxml2-doc", rpm:"libxml2-doc~2.9.4~46.15.1", rls:"SLES12.0SP3"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"libxml2-tools", rpm:"libxml2-tools~2.9.4~46.15.1", rls:"SLES12.0SP3"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"python-libxml2", rpm:"python-libxml2~2.9.4~46.15.1", rls:"SLES12.0SP3"))) {
    report += res;
  }

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

exit(0);