RHEL 2.1 / 3 / 4 : openssl (RHSA-2005:476)

2005-06-02T00:00:00
ID REDHAT-RHSA-2005-476.NASL
Type nessus
Reporter Tenable
Modified 2018-11-15T00:00:00

Description

Updated OpenSSL packages that fix security issues are now available.

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

OpenSSL is a toolkit that implements Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1) protocols as well as a full-strength general purpose cryptography library.

Colin Percival reported a cache timing attack that could allow a malicious local user to gain portions of cryptographic keys. The Common Vulnerabilities and Exposures project (cve.mitre.org) assigned the name CVE-2005-0109 to the issue. The OpenSSL library has been patched to add a new fixed-window mod_exp implementation as default for RSA, DSA, and DH private-key operations. This patch is designed to mitigate cache timing and potentially related attacks.

A flaw was found in the way the der_chop script creates temporary files. It is possible that a malicious local user could cause der_chop to overwrite files (CVE-2004-0975). The der_chop script was deprecated and has been removed from these updated packages. Red Hat Enterprise Linux 4 did not ship der_chop and is therefore not vulnerable to this issue.

Users are advised to update to these erratum packages which contain patches to correct these issues.

Please note: After installing this update, users are advised to either restart all services that use OpenSSL or restart their system.

                                        
                                            #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2005:476. The text 
# itself is copyright (C) Red Hat, Inc.
#

include("compat.inc");

if (description)
{
  script_id(18409);
  script_version ("1.23");
  script_cvs_date("Date: 2018/11/15 11:40:30");

  script_cve_id("CVE-2004-0975", "CVE-2005-0109");
  script_xref(name:"RHSA", value:"2005:476");

  script_name(english:"RHEL 2.1 / 3 / 4 : openssl (RHSA-2005:476)");
  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 OpenSSL packages that fix security issues are now available.

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

OpenSSL is a toolkit that implements Secure Sockets Layer (SSL v2/v3)
and Transport Layer Security (TLS v1) protocols as well as a
full-strength general purpose cryptography library.

Colin Percival reported a cache timing attack that could allow a
malicious local user to gain portions of cryptographic keys. The
Common Vulnerabilities and Exposures project (cve.mitre.org) assigned
the name CVE-2005-0109 to the issue. The OpenSSL library has been
patched to add a new fixed-window mod_exp implementation as default
for RSA, DSA, and DH private-key operations. This patch is designed to
mitigate cache timing and potentially related attacks.

A flaw was found in the way the der_chop script creates temporary
files. It is possible that a malicious local user could cause der_chop
to overwrite files (CVE-2004-0975). The der_chop script was deprecated
and has been removed from these updated packages. Red Hat Enterprise
Linux 4 did not ship der_chop and is therefore not vulnerable to this
issue.

Users are advised to update to these erratum packages which contain
patches to correct these issues.

Please note: After installing this update, users are advised to either
restart all services that use OpenSSL or restart their system."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/security/cve/cve-2004-0975"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/security/cve/cve-2005-0109"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/errata/RHSA-2005:476"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:M/Au:N/C:C/I:N/A:N");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:openssl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:openssl-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:openssl-perl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:openssl095a");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:openssl096");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:openssl096b");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:2.1");
  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:"patch_publication_date", value:"2005/06/01");
  script_set_attribute(attribute:"plugin_publication_date", value:"2005/06/02");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2005-2018 and is owned by Tenable, Inc. or an Affiliate thereof.");
  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:"^(2\.1|3|4)([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Red Hat 2.1 / 3.x / 4.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-2005:476";
  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:"RHEL2.1", cpu:"i386", reference:"openssl-0.9.6b-39")) flag++;
  if (rpm_check(release:"RHEL2.1", cpu:"i686", reference:"openssl-0.9.6b-39")) flag++;
  if (rpm_check(release:"RHEL2.1", cpu:"i386", reference:"openssl-devel-0.9.6b-39")) flag++;
  if (rpm_check(release:"RHEL2.1", cpu:"i386", reference:"openssl-perl-0.9.6b-39")) flag++;
  if (rpm_check(release:"RHEL2.1", cpu:"i386", reference:"openssl095a-0.9.5a-25")) flag++;
  if (rpm_check(release:"RHEL2.1", cpu:"i386", reference:"openssl096-0.9.6-25.8")) flag++;

  if (rpm_check(release:"RHEL3", reference:"openssl-0.9.7a-33.15")) flag++;
  if (rpm_check(release:"RHEL3", reference:"openssl-devel-0.9.7a-33.15")) flag++;
  if (rpm_check(release:"RHEL3", reference:"openssl-perl-0.9.7a-33.15")) flag++;
  if (rpm_check(release:"RHEL3", cpu:"i386", reference:"openssl096b-0.9.6b-16.22.3")) flag++;
  if (rpm_check(release:"RHEL3", cpu:"s390", reference:"openssl096b-0.9.6b-16.22.3")) flag++;
  if (rpm_check(release:"RHEL3", cpu:"x86_64", reference:"openssl096b-0.9.6b-16.22.3")) flag++;

  if (rpm_check(release:"RHEL4", reference:"openssl-0.9.7a-43.2")) flag++;
  if (rpm_check(release:"RHEL4", reference:"openssl-devel-0.9.7a-43.2")) flag++;
  if (rpm_check(release:"RHEL4", reference:"openssl-perl-0.9.7a-43.2")) flag++;
  if (rpm_check(release:"RHEL4", cpu:"i386", reference:"openssl096b-0.9.6b-22.3")) flag++;
  if (rpm_check(release:"RHEL4", cpu:"s390", reference:"openssl096b-0.9.6b-22.3")) flag++;
  if (rpm_check(release:"RHEL4", cpu:"x86_64", reference:"openssl096b-0.9.6b-22.3")) 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, "openssl / openssl-devel / openssl-perl / openssl095a / openssl096 / etc");
  }
}