CentOS: Security Advisory for net-snmp (CESA-2020:5350)

# Copyright (C) 2021 Greenbone Networks GmbH
# 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-or-later
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.883319");
  script_version("2021-08-17T09:01:01+0000");
  script_cve_id("CVE-2020-15862");
  script_tag(name:"cvss_base", value:"7.2");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:L/Au:N/C:C/I:C/A:C");
  script_tag(name:"last_modification", value:"2021-08-17 09:01:01 +0000 (Tue, 17 Aug 2021)");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2020-09-04 14:58:00 +0000 (Fri, 04 Sep 2020)");
  script_tag(name:"creation_date", value:"2021-01-27 04:00:46 +0000 (Wed, 27 Jan 2021)");
  script_name("CentOS: Security Advisory for net-snmp (CESA-2020:5350)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2021 Greenbone Networks GmbH");
  script_family("CentOS Local Security Checks");
  script_dependencies("gather-package-list.nasl");
  script_mandatory_keys("ssh/login/centos", "ssh/login/rpms", re:"ssh/login/release=CentOS7");

  script_xref(name:"Advisory-ID", value:"CESA-2020:5350");
  script_xref(name:"URL", value:"https://lists.centos.org/pipermail/centos-announce/2021-January/048249.html");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'net-snmp'
  package(s) announced via the CESA-2020:5350 advisory.");

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

  script_tag(name:"insight", value:"The net-snmp packages provide various libraries and tools for the Simple
Network Management Protocol (SNMP), including an SNMP library, an
extensible agent, tools for requesting or setting information from SNMP
agents, tools for generating and handling SNMP traps, a version of the
netstat command which uses SNMP, and a Tk/Perl Management Information Base
(MIB) browser.

Security Fix(es):

  * net-snmp: Improper Privilege Management in EXTEND MIB may lead to
privileged commands execution (CVE-2020-15862)

For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE
page(s) listed in the References section.");

  script_tag(name:"affected", value:"'net-snmp' package(s) on CentOS 7.");

  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 == "CentOS7") {

  if(!isnull(res = isrpmvuln(pkg:"net-snmp", rpm:"net-snmp~5.7.2~49.el7_9.1", rls:"CentOS7"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"net-snmp-agent-libs", rpm:"net-snmp-agent-libs~5.7.2~49.el7_9.1", rls:"CentOS7"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"net-snmp-devel", rpm:"net-snmp-devel~5.7.2~49.el7_9.1", rls:"CentOS7"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"net-snmp-gui", rpm:"net-snmp-gui~5.7.2~49.el7_9.1", rls:"CentOS7"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"net-snmp-libs", rpm:"net-snmp-libs~5.7.2~49.el7_9.1", rls:"CentOS7"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"net-snmp-perl", rpm:"net-snmp-perl~5.7.2~49.el7_9.1", rls:"CentOS7"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"net-snmp-python", rpm:"net-snmp-python~5.7.2~49.el7_9.1", rls:"CentOS7"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"net-snmp-sysvinit", rpm:"net-snmp-sysvinit~5.7.2~49.el7_9.1", rls:"CentOS7"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"net-snmp-utils", rpm:"net-snmp-utils~5.7.2~49.el7_9.1", rls:"CentOS7"))) {
    report += res;
  }

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

exit(0);