Fedora: Security Advisory for libxml2 (FEDORA-2021-e8b7e177a4)

# 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("1.3.6.1.4.1.25623.1.0.879648");
  script_version("2025-09-05T15:40:40+0000");
  script_cve_id("CVE-2021-3541");
  script_tag(name:"cvss_base", value:"4.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:S/C:N/I:N/A:P");
  script_tag(name:"last_modification", value:"2025-09-05 15:40:40 +0000 (Fri, 05 Sep 2025)");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2021-07-12 16:35:00 +0000 (Mon, 12 Jul 2021)");
  script_tag(name:"creation_date", value:"2021-05-27 03:19:58 +0000 (Thu, 27 May 2021)");
  script_name("Fedora: Security Advisory for libxml2 (FEDORA-2021-e8b7e177a4)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2021 Greenbone AG");
  script_family("Fedora Local Security Checks");
  script_dependencies("gather-package-list.nasl");
  script_mandatory_keys("ssh/login/fedora", "ssh/login/rpms", re:"ssh/login/release=FC34");

  script_xref(name:"Advisory-ID", value:"FEDORA-2021-e8b7e177a4");
  script_xref(name:"URL", value:"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NYSYJVWYEQHFG2TBIQJRJ5COUR5LNFJJ");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'libxml2'
  package(s) announced via the FEDORA-2021-e8b7e177a4 advisory.");

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

  script_tag(name:"insight", value:"This library allows to manipulate XML files. It includes support
to read, modify and write XML and HTML files. There is DTDs support
this includes parsing and validation even with complex DtDs, either
at parse time or later once the document has been modified. The output
can be a simple SAX stream or in-memory DOM like representations.
In this case one can use the built-in XPath and XPointer implementation
to select sub nodes or ranges. A flexible Input/Output mechanism is
available, with existing HTTP and FTP modules and combined to an
URI library.");

  script_tag(name:"affected", value:"'libxml2' package(s) on Fedora 34.");

  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 == "FC34") {

  if(!isnull(res = isrpmvuln(pkg:"libxml2", rpm:"libxml2~2.9.12~2.fc34", rls:"FC34"))) {
    report += res;
  }

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

exit(0);