Mageia: Security Advisory (MGASA-2016-0187)

# SPDX-FileCopyrightText: 2022 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("1.3.6.1.4.1.25623.1.1.10.2016.0187");
  script_cve_id("CVE-2016-3627", "CVE-2016-3705");
  script_tag(name:"creation_date", value:"2022-01-28 10:58:44 +0000 (Fri, 28 Jan 2022)");
  script_version("2024-10-23T05:05:59+0000");
  script_tag(name:"last_modification", value:"2024-10-23 05:05:59 +0000 (Wed, 23 Oct 2024)");
  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:"2016-05-17 15:30:41 +0000 (Tue, 17 May 2016)");

  script_name("Mageia: Security Advisory (MGASA-2016-0187)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2022 Greenbone AG");
  script_family("Mageia Linux Local Security Checks");
  script_dependencies("gather-package-list.nasl");
  script_mandatory_keys("ssh/login/mageia_linux", "ssh/login/release", re:"ssh/login/release=MAGEIA5");

  script_xref(name:"Advisory-ID", value:"MGASA-2016-0187");
  script_xref(name:"URL", value:"https://advisories.mageia.org/MGASA-2016-0187.html");
  script_xref(name:"URL", value:"http://openwall.com/lists/oss-security/2016/05/03/4");
  script_xref(name:"URL", value:"https://bugs.mageia.org/show_bug.cgi?id=18346");
  script_xref(name:"URL", value:"https://lists.opensuse.org/opensuse-updates/2016-05/msg00055.html");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'libxml2' package(s) announced via the MGASA-2016-0187 advisory.");

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

  script_tag(name:"insight", value:"When running in recovery mode, certain invalid XML documents would trigger
an infinite recursion in libxml2 that ran until all stack space was
exhausted. This vulnerability could have been used to facilitate a
denial-of-sevice attack (CVE-2016-3627).

libxml2 limits the number of recursions an XML document can contain so to
protect against the 'Billion Laughs' denial-of-service attack.
Unfortunately, the underlying counter was not incremented properly in all
necessary locations. Therefore, specially crafted XML documents could
exhaust all available stack space and crash the XML parser without running
into the recursion limit (CVE-2016-3705).");

  script_tag(name:"affected", value:"'libxml2' package(s) on Mageia 5.");

  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 == "MAGEIA5") {

  if(!isnull(res = isrpmvuln(pkg:"lib64xml2-devel", rpm:"lib64xml2-devel~2.9.3~1.1.mga5", rls:"MAGEIA5"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"lib64xml2_2", rpm:"lib64xml2_2~2.9.3~1.1.mga5", rls:"MAGEIA5"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"libxml2", rpm:"libxml2~2.9.3~1.1.mga5", rls:"MAGEIA5"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"libxml2-devel", rpm:"libxml2-devel~2.9.3~1.1.mga5", rls:"MAGEIA5"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"libxml2-python", rpm:"libxml2-python~2.9.3~1.1.mga5", rls:"MAGEIA5"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"libxml2-utils", rpm:"libxml2-utils~2.9.3~1.1.mga5", rls:"MAGEIA5"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"libxml2_2", rpm:"libxml2_2~2.9.3~1.1.mga5", rls:"MAGEIA5"))) {
    report += res;
  }

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

exit(0);