SUSE SLES12 Security Update : apache2 (SUSE-SU-2019:0888-1)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from SUSE update advisory SUSE-SU-2019:0888-1.
# The text itself is copyright (C) SUSE.
#

include('compat.inc');

if (description)
{
  script_id(123822);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/12/05");

  script_cve_id("CVE-2018-17199", "CVE-2019-0217", "CVE-2019-0220");
  script_xref(name:"CEA-ID", value:"CEA-2019-0203");

  script_name(english:"SUSE SLES12 Security Update : apache2 (SUSE-SU-2019:0888-1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote SUSE host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"This update for apache2 fixes the following issues :

CVE-2018-17199: A bug in Apache's 'mod_session_cookie' lead to an
issue where the module did not respect a cookie's expiry time.
[bsc#1122839]

CVE-2019-0220: The Apache HTTP server did not use a consistent
strategy for URL normalization throughout all of its components. In
particular, consecutive slashes were not always collapsed. Attackers
could potentially abuse these inconsistencies to by-pass access
control mechanisms and thus gain unauthorized access to protected
parts of the service. [bsc#1131241]

CVE-2019-0217: A race condition in Apache's 'mod_auth_digest' when
running in a threaded server could have allowed users with valid
credentials to authenticate using another username, bypassing
configured access control restrictions. [bsc#1131239]

Note that Tenable Network Security has extracted the preceding
description block directly from the SUSE security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues.");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1122839");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1131239");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1131241");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2018-17199/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-0217/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-0220/");
  # https://www.suse.com/support/update/announcement/2019/suse-su-20190888-1/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?370c8013");
  script_set_attribute(attribute:"solution", value:
"To install this SUSE Security Update use the SUSE recommended
installation methods like YaST online_update or 'zypper patch'.

Alternatively you can run the command listed for your product :

SUSE Linux Enterprise Server 12-SP1-LTSS:zypper in -t patch
SUSE-SLE-SERVER-12-SP1-2019-888=1");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:S/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-0217");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/01/30");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/04/05");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/04/08");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:apache2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:apache2-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:apache2-debugsource");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:apache2-example-pages");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:apache2-prefork");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:apache2-prefork-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:apache2-utils");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:apache2-utils-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:apache2-worker");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:apache2-worker-debuginfo");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:12");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"SuSE Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2019-2022 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

  exit(0);
}


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


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/SuSE/release");
if (isnull(release) || release !~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "SUSE");
os_ver = pregmatch(pattern: "^(SLE(S|D)\d+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "SUSE");
os_ver = os_ver[1];
if (! preg(pattern:"^(SLES12)$", string:os_ver)) audit(AUDIT_OS_NOT, "SUSE SLES12", "SUSE " + os_ver);

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

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu !~ "^i[3-6]86$" && "x86_64" >!< cpu && "s390x" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "SUSE " + os_ver, cpu);

sp = get_kb_item("Host/SuSE/patchlevel");
if (isnull(sp)) sp = "0";
if (os_ver == "SLES12" && (! preg(pattern:"^(1)$", string:sp))) audit(AUDIT_OS_NOT, "SLES12 SP1", os_ver + " SP" + sp);


flag = 0;
if (rpm_check(release:"SLES12", sp:"1", reference:"apache2-2.4.16-20.24.1")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"apache2-debuginfo-2.4.16-20.24.1")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"apache2-debugsource-2.4.16-20.24.1")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"apache2-example-pages-2.4.16-20.24.1")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"apache2-prefork-2.4.16-20.24.1")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"apache2-prefork-debuginfo-2.4.16-20.24.1")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"apache2-utils-2.4.16-20.24.1")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"apache2-utils-debuginfo-2.4.16-20.24.1")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"apache2-worker-2.4.16-20.24.1")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"apache2-worker-debuginfo-2.4.16-20.24.1")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
  else security_warning(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "apache2");
}