RedHat Update for bash RHSA-2011:0261-01

# SPDX-FileCopyrightText: 2011 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_xref(name:"URL", value:"https://www.redhat.com/archives/rhsa-announce/2011-February/msg00017.html");
  script_oid("1.3.6.1.4.1.25623.1.0.870392");
  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:"2011-02-18 15:15:05 +0100 (Fri, 18 Feb 2011)");
  script_tag(name:"cvss_base", value:"6.9");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:M/Au:N/C:C/I:C/A:C");
  script_xref(name:"RHSA", value:"2011:0261-01");
  script_cve_id("CVE-2008-5374");
  script_name("RedHat Update for bash RHSA-2011:0261-01");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'bash'
  package(s) announced via the referenced advisory.");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2011 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_4");
  script_tag(name:"affected", value:"bash on Red Hat Enterprise Linux AS version 4,
  Red Hat Enterprise Linux ES version 4,
  Red Hat Enterprise Linux WS version 4");
  script_tag(name:"solution", value:"Please Install the Updated Packages.");
  script_tag(name:"insight", value:"Bash (Bourne-again shell) is the default shell for Red Hat Enterprise
  Linux.

  It was found that certain scripts bundled with the Bash documentation
  created temporary files in an insecure way. A malicious, local user could
  use this flaw to conduct a symbolic link attack, allowing them to overwrite
  the contents of arbitrary files accessible to the victim running the
  scripts. (CVE-2008-5374)

  This update also fixes the following bugs:

  * If a child process's PID was the same as the PID of a previously ended
  child process, Bash did not wait for that child process. In some cases this
  caused 'Resource temporarily unavailable' errors. With this update, Bash
  recycles PIDs and waits for processes with recycled PIDs. (BZ#521134)

  * Bash's built-in 'read' command had a memory leak when 'read' failed due
  to no input (pipe for stdin). With this update, the memory is correctly
  freed. (BZ#537029)

  * Bash did not correctly check for a valid multi-byte string when setting
  the IFS value, causing Bash to crash. With this update, Bash checks the
  multi-byte string and no longer crashes. (BZ#539536)

  * Bash incorrectly set locale settings when using the built-in 'export'
  command and setting the locale on the same line (for example, with
  'LC_ALL=C export LC_ALL'). With this update, Bash correctly sets locale
  settings. (BZ#539538)

  All bash users should upgrade to these updated packages, which contain
  backported patches to correct these issues.");
  script_tag(name:"qod_type", value:"package");
  script_tag(name:"solution_type", value:"VendorFix");

  exit(0);
}

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

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

res = "";

if(release == "RHENT_4")
{

  if ((res = isrpmvuln(pkg:"bash", rpm:"bash~3.0~27.el4", rls:"RHENT_4")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isrpmvuln(pkg:"bash-debuginfo", rpm:"bash-debuginfo~3.0~27.el4", rls:"RHENT_4")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

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