Huawei EulerOS: Security Advisory for httpd (EulerOS-SA-2019-1389)

# Copyright (C) 2020 Greenbone Networks GmbH
# Text descriptions are largely excerpted from the referenced
# advisory, and are Copyright (C) the respective author(s)
#
# SPDX-License-Identifier: GPL-2.0-or-later
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.1.2.2019.1389");
  script_version("2020-01-23T11:41:27+0000");
  script_cve_id("CVE-2017-3167", "CVE-2017-3169", "CVE-2017-7668", "CVE-2017-7679", "CVE-2017-9788", "CVE-2017-9798", "CVE-2018-17199");
  script_tag(name:"cvss_base", value:"7.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_tag(name:"last_modification", value:"2020-01-23 11:41:27 +0000 (Thu, 23 Jan 2020)");
  script_tag(name:"creation_date", value:"2020-01-23 11:41:27 +0000 (Thu, 23 Jan 2020)");
  script_name("Huawei EulerOS: Security Advisory for httpd (EulerOS-SA-2019-1389)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2020 Greenbone Networks GmbH");
  script_family("Huawei EulerOS Local Security Checks");
  script_dependencies("gb_huawei_euleros_consolidation.nasl");
  script_mandatory_keys("ssh/login/euleros", "ssh/login/rpms", re:"ssh/login/release=EULEROSVIRTARM64-3\.0\.1\.0");

  script_xref(name:"EulerOS-SA", value:"2019-1389");
  script_xref(name:"URL", value:"https://developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2019-1389");

  script_tag(name:"summary", value:"The remote host is missing an update for the Huawei EulerOS
  'httpd' package(s) announced via the EulerOS-SA-2019-1389 advisory.");

  script_tag(name:"vuldetect", value:"Checks if a vulnerable package version is present on the target host.");

  script_tag(name:"insight", value:"In Apache HTTP Server 2.4 release 2.4.37 and prior, mod_session checks the session expiry time before decoding the session. This causes session expiry time to be ignored for mod_session_cookie sessions since the expiry time is loaded when the session is decoded.(CVE-2018-17199)

It was discovered that the use of httpd's ap_get_basic_auth_pw() API function outside of the authentication phase could lead to authentication bypass. A remote attacker could possibly use this flaw to bypass required authentication if the API was used incorrectly by one of the modules used by httpd.(CVE-2017-3167)

A NULL pointer dereference flaw was found in the httpd's mod_ssl module. A remote attacker could use this flaw to cause an httpd child process to crash if another module used by httpd called a certain API function during the processing of an HTTPS request.(CVE-2017-3169)

A buffer over-read flaw was found in the httpd's ap_find_token() function. A remote attacker could use this flaw to cause httpd child process to crash via a specially crafted HTTP request.(CVE-2017-7668)

A buffer over-read flaw was found in the httpd's mod_mime module. A user permitted to modify httpd's MIME configuration could use this flaw to cause httpd child process to crash.(CVE-2017-7679)

It was discovered that the httpd's mod_auth_digest module did not properly initialize memory before using it when processing certain headers related to digest authentication. A remote attacker could possibly use this flaw to disclose potentially sensitive information or cause httpd child process to crash by sending specially crafted requests to a server.(CVE-2017-9788)

A use-after-free flaw was found in the way httpd handled invalid and previously unregistered HTTP methods specified in the Limit directive used in an .htaccess file. A remote attacker could possibly use this flaw to disclose portions of the server memory, or cause httpd child process to crash.(CVE-2017-9798)");

  script_tag(name:"affected", value:"'httpd' package(s) on Huawei EulerOS Virtualization for ARM 64 3.0.1.0.");

  script_tag(name:"solution", value:"Please install the updated package(s).");

  script_tag(name:"solution_type", value:"VendorFix");
  script_tag(name:"qod_type", value:"package");

  exit(0);
}

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

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

res = "";
report = "";

if(release == "EULEROSVIRTARM64-3.0.1.0") {

  if(!isnull(res = isrpmvuln(pkg:"httpd", rpm:"httpd~2.4.6~80.1.h4", rls:"EULEROSVIRTARM64-3.0.1.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"httpd-tools", rpm:"httpd-tools~2.4.6~80.1.h4", rls:"EULEROSVIRTARM64-3.0.1.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"mod_ssl", rpm:"mod_ssl~2.4.6~80.1.h4", rls:"EULEROSVIRTARM64-3.0.1.0"))) {
    report += res;
  }

  if(report != "") {
    security_message(data:report);
  } else if (__pkg_match) {
    exit(99);
  }
  exit(0);
}

exit(0);