SUSE: Security Advisory (SUSE-SU-2021:2818-1)

# 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("1.3.6.1.4.1.25623.1.1.4.2021.2818.1");
  script_cve_id("CVE-2020-14343", "CVE-2020-1747");
  script_tag(name:"creation_date", value:"2021-08-25 02:24:18 +0000 (Wed, 25 Aug 2021)");
  script_version("2024-02-02T14:37:50+0000");
  script_tag(name:"last_modification", value:"2024-02-02 14:37:50 +0000 (Fri, 02 Feb 2024)");
  script_tag(name:"cvss_base", value:"10.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2020-03-30 13:59:36 +0000 (Mon, 30 Mar 2020)");

  script_name("SUSE: Security Advisory (SUSE-SU-2021:2818-1)");
  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\.0|SLES12\.0SP3|SLES12\.0SP4|SLES12\.0SP5)");

  script_xref(name:"Advisory-ID", value:"SUSE-SU-2021:2818-1");
  script_xref(name:"URL", value:"https://www.suse.com/support/update/announcement/2021/suse-su-20212818-1/");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'python-PyYAML' package(s) announced via the SUSE-SU-2021:2818-1 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 python-PyYAML fixes the following issues:

Update to 5.3.1.

CVE-2020-14343: A vulnerability was discovered in the PyYAML library,
 where it was susceptible to arbitrary code execution when it processes
 untrusted YAML files through the full_load method or with the FullLoader
 loader. Applications that use the library to process untrusted input may
 be vulnerable to this flaw. This flaw allows an attacker to execute
 arbitrary code on the system by abusing the python/object/new
 constructor. This flaw is due to an incomplete fix for CVE-2020-1747.");

  script_tag(name:"affected", value:"'python-PyYAML' package(s) on SUSE Linux Enterprise Module for Public Cloud 12, SUSE Linux Enterprise Server 12-SP3, SUSE Linux Enterprise Server 12-SP4, SUSE Linux Enterprise Server 12-SP5, SUSE Linux Enterprise Server for SAP 12-SP3, SUSE Linux Enterprise Server for SAP 12-SP4, SUSE OpenStack Cloud 7, SUSE OpenStack Cloud 8, SUSE OpenStack Cloud 9, SUSE OpenStack Cloud Crowbar 8, SUSE OpenStack Cloud Crowbar 9.");

  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 == "SLES12.0") {

  if(!isnull(res = isrpmvuln(pkg:"python-PyYAML", rpm:"python-PyYAML~5.3.1~28.6.1", rls:"SLES12.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"python-PyYAML-debuginfo", rpm:"python-PyYAML-debuginfo~5.3.1~28.6.1", rls:"SLES12.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"python-PyYAML-debugsource", rpm:"python-PyYAML-debugsource~5.3.1~28.6.1", rls:"SLES12.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"python3-PyYAML", rpm:"python3-PyYAML~5.3.1~28.6.1", rls:"SLES12.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"python3-PyYAML-debuginfo", rpm:"python3-PyYAML-debuginfo~5.3.1~28.6.1", rls:"SLES12.0"))) {
    report += res;
  }

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

if(release == "SLES12.0SP3") {

  if(!isnull(res = isrpmvuln(pkg:"python-PyYAML", rpm:"python-PyYAML~5.3.1~28.6.1", rls:"SLES12.0SP3"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"python-PyYAML-debuginfo", rpm:"python-PyYAML-debuginfo~5.3.1~28.6.1", rls:"SLES12.0SP3"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"python-PyYAML-debugsource", rpm:"python-PyYAML-debugsource~5.3.1~28.6.1", rls:"SLES12.0SP3"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"python3-PyYAML", rpm:"python3-PyYAML~5.3.1~28.6.1", rls:"SLES12.0SP3"))) {
    report += res;
  }

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

if(release == "SLES12.0SP4") {

  if(!isnull(res = isrpmvuln(pkg:"python-PyYAML", rpm:"python-PyYAML~5.3.1~28.6.1", rls:"SLES12.0SP4"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"python-PyYAML-debuginfo", rpm:"python-PyYAML-debuginfo~5.3.1~28.6.1", rls:"SLES12.0SP4"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"python-PyYAML-debugsource", rpm:"python-PyYAML-debugsource~5.3.1~28.6.1", rls:"SLES12.0SP4"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"python3-PyYAML", rpm:"python3-PyYAML~5.3.1~28.6.1", rls:"SLES12.0SP4"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"python3-PyYAML-debuginfo", rpm:"python3-PyYAML-debuginfo~5.3.1~28.6.1", rls:"SLES12.0SP4"))) {
    report += res;
  }

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

if(release == "SLES12.0SP5") {

  if(!isnull(res = isrpmvuln(pkg:"python-PyYAML", rpm:"python-PyYAML~5.3.1~28.6.1", rls:"SLES12.0SP5"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"python-PyYAML-debuginfo", rpm:"python-PyYAML-debuginfo~5.3.1~28.6.1", rls:"SLES12.0SP5"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"python-PyYAML-debugsource", rpm:"python-PyYAML-debugsource~5.3.1~28.6.1", rls:"SLES12.0SP5"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"python3-PyYAML", rpm:"python3-PyYAML~5.3.1~28.6.1", rls:"SLES12.0SP5"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"python3-PyYAML-debuginfo", rpm:"python3-PyYAML-debuginfo~5.3.1~28.6.1", rls:"SLES12.0SP5"))) {
    report += res;
  }

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

exit(0);