RedHat Update for bash RHSA-2017:1931-01

# SPDX-FileCopyrightText: 2017 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("1.3.6.1.4.1.25623.1.0.871874");
  script_version("2024-03-21T05:06:54+0000");
  script_tag(name:"last_modification", value:"2024-03-21 05:06:54 +0000 (Thu, 21 Mar 2024)");
  script_tag(name:"creation_date", value:"2017-08-04 12:46:12 +0530 (Fri, 04 Aug 2017)");
  script_cve_id("CVE-2016-0634", "CVE-2016-7543", "CVE-2016-9401");
  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:"severity_vector", value:"CVSS:3.0/AV:L/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:"2018-01-05 02:31:00 +0000 (Fri, 05 Jan 2018)");
  script_tag(name:"qod_type", value:"package");
  script_name("RedHat Update for bash RHSA-2017:1931-01");
  script_tag(name:"summary", value:"The remote host is missing an update for the 'bash'
  package(s) announced via the referenced advisory.");
  script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");
  script_tag(name:"insight", value:"The bash packages provide Bash (Bourne-again
  shell), which is the default shell for Red Hat Enterprise Linux. Security
  Fix(es): * An arbitrary command injection flaw was found in the way bash
  processed the hostname value. A malicious DHCP server could use this flaw to
  execute arbitrary commands on the DHCP client machines running bash under
  specific circumstances. (CVE-2016-0634) * An arbitrary command injection flaw
  was found in the way bash processed the SHELLOPTS and PS4 environment variables.
  A local, authenticated attacker could use this flaw to exploit poorly written
  setuid programs to elevate their privileges under certain circumstances.
  (CVE-2016-7543) * A denial of service flaw was found in the way bash handled
  popd commands. A poorly written shell script could cause bash to crash resulting
  in a local denial of service limited to a specific bash session. (CVE-2016-9401)
  Additional Changes: For detailed information on changes in this release, see the
  Red Hat Enterprise Linux 7.4 Release Notes linked from the References section.");
  script_tag(name:"affected", value:"bash on Red Hat Enterprise Linux Server (v. 7)");
  script_tag(name:"solution", value:"Please Install the Updated Packages.");

  script_xref(name:"RHSA", value:"2017:1931-01");
  script_xref(name:"URL", value:"https://www.redhat.com/archives/rhsa-announce/2017-August/msg00022.html");
  script_tag(name:"solution_type", value:"VendorFix");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2017 Greenbone AG");
  script_family("Red Hat Local Security Checks");
  script_dependencies("gather-package-list.nasl");
  script_mandatory_keys("ssh/login/rhel", "ssh/login/rpms", re:"ssh/login/release=RHENT_7");

  exit(0);
}

include("revisions-lib.inc");
include("pkg-lib-rpm.inc");

release = rpm_get_ssh_release();
if(!release) exit(0);

res = "";

if(release == "RHENT_7")
{

  if ((res = isrpmvuln(pkg:"bash", rpm:"bash~4.2.46~28.el7", rls:"RHENT_7")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isrpmvuln(pkg:"bash-debuginfo", rpm:"bash-debuginfo~4.2.46~28.el7", rls:"RHENT_7")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if (__pkg_match) exit(99);
  exit(0);
}