RHEL 3 / 4 / 5 : perl (RHSA-2008:0522)

2008-06-12T00:00:00
ID REDHAT-RHSA-2008-0522.NASL
Type nessus
Reporter Tenable
Modified 2017-01-03T00:00:00

Description

Updated perl packages that fix a security issue are now available for Red Hat Enterprise Linux 3, 4, and 5.

This update has been rated as having important security impact by the Red Hat Security Response Team.

Perl is a high-level programming language commonly used for system administration utilities and Web programming.

A flaw was found in Perl's regular expression engine. A specially crafted regular expression with Unicode characters could trigger a buffer overflow, causing Perl to crash, or possibly execute arbitrary code with the privileges of the user running Perl. (CVE-2008-1927)

Users of perl are advised to upgrade to these updated packages, which contain a backported patch to resolve this issue.

                                        
                                            #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2008:0522. The text 
# itself is copyright (C) Red Hat, Inc.
#

include("compat.inc");

if (description)
{
  script_id(33155);
  script_version ("$Revision: 1.19 $");
  script_cvs_date("$Date: 2017/01/03 17:16:33 $");

  script_cve_id("CVE-2008-1927");
  script_bugtraq_id(28928);
  script_xref(name:"RHSA", value:"2008:0522");

  script_name(english:"RHEL 3 / 4 / 5 : perl (RHSA-2008:0522)");
  script_summary(english:"Checks the rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Red Hat host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Updated perl packages that fix a security issue are now available for
Red Hat Enterprise Linux 3, 4, and 5.

This update has been rated as having important security impact by the
Red Hat Security Response Team.

Perl is a high-level programming language commonly used for system
administration utilities and Web programming.

A flaw was found in Perl's regular expression engine. A specially
crafted regular expression with Unicode characters could trigger a
buffer overflow, causing Perl to crash, or possibly execute arbitrary
code with the privileges of the user running Perl. (CVE-2008-1927)

Users of perl are advised to upgrade to these updated packages, which
contain a backported patch to resolve this issue."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.redhat.com/security/data/cve/CVE-2008-1927.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://rhn.redhat.com/errata/RHSA-2008-0522.html"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:ND/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(399);

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:perl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:perl-CGI");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:perl-CPAN");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:perl-DB_File");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:perl-suidperl");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:3");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:4");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:4.6");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:5");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:5.2");

  script_set_attribute(attribute:"patch_publication_date", value:"2008/06/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2008/06/12");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2008-2017 Tenable Network Security, Inc.");
  script_family(english:"Red Hat Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/cpu");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("rpm.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || "Red Hat" >!< release) audit(AUDIT_OS_NOT, "Red Hat");
os_ver = eregmatch(pattern: "Red Hat Enterprise Linux.*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Red Hat");
os_ver = os_ver[1];
if (! ereg(pattern:"^(3|4|5)([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Red Hat 3.x / 4.x / 5.x", "Red Hat " + os_ver);

if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$" && "s390" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Red Hat", cpu);

yum_updateinfo = get_kb_item("Host/RedHat/yum-updateinfo");
if (!empty_or_null(yum_updateinfo)) 
{
  rhsa = "RHSA-2008:0522";
  yum_report = redhat_generate_yum_updateinfo_report(rhsa:rhsa);
  if (!empty_or_null(yum_report))
  {
    security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      extra      : yum_report 
    );
    exit(0);
  }
  else
  {
    audit_message = "affected by Red Hat security advisory " + rhsa;
    audit(AUDIT_OS_NOT, audit_message);
  }
}
else
{
  flag = 0;
  if (rpm_check(release:"RHEL3", reference:"perl-5.8.0-98.EL3")) flag++;

  if (rpm_check(release:"RHEL3", reference:"perl-CGI-2.89-98.EL3")) flag++;

  if (rpm_check(release:"RHEL3", reference:"perl-CPAN-1.61-98.EL3")) flag++;

  if (rpm_check(release:"RHEL3", reference:"perl-DB_File-1.806-98.EL3")) flag++;

  if (rpm_check(release:"RHEL3", reference:"perl-suidperl-5.8.0-98.EL3")) flag++;


  if (rpm_check(release:"RHEL4", reference:"perl-5.8.5-36.el4_6.3")) flag++;

  if (rpm_check(release:"RHEL4", reference:"perl-suidperl-5.8.5-36.el4_6.3")) flag++;


  if (rpm_check(release:"RHEL5", cpu:"i386", reference:"perl-5.8.8-10.el5_2.3")) flag++;

  if (rpm_check(release:"RHEL5", cpu:"s390x", reference:"perl-5.8.8-10.el5_2.3")) flag++;

  if (rpm_check(release:"RHEL5", cpu:"x86_64", reference:"perl-5.8.8-10.el5_2.3")) flag++;

  if (rpm_check(release:"RHEL5", cpu:"i386", reference:"perl-suidperl-5.8.8-10.el5_2.3")) flag++;

  if (rpm_check(release:"RHEL5", cpu:"s390x", reference:"perl-suidperl-5.8.8-10.el5_2.3")) flag++;

  if (rpm_check(release:"RHEL5", cpu:"x86_64", reference:"perl-suidperl-5.8.8-10.el5_2.3")) flag++;


  if (flag)
  {
    security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      extra      : rpm_report_get() + redhat_report_package_caveat()
    );
    exit(0);
  }
  else
  {
    tested = pkg_tests_get();
    if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
    else audit(AUDIT_PACKAGE_NOT_INSTALLED, "perl / perl-CGI / perl-CPAN / perl-DB_File / perl-suidperl");
  }
}