Ubuntu: Security Advisory for php7.0 (USN-4279-2)

# 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("1.3.6.1.4.1.25623.1.0.844349");
  script_version("2020-02-20T11:12:08+0000");
  script_cve_id("CVE-2015-9253", "CVE-2020-7059", "CVE-2020-7060");
  script_tag(name:"cvss_base", value:"6.8");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:S/C:N/I:N/A:C");
  script_tag(name:"last_modification", value:"2020-02-20 11:12:08 +0000 (Thu, 20 Feb 2020)");
  script_tag(name:"creation_date", value:"2020-02-20 04:00:23 +0000 (Thu, 20 Feb 2020)");
  script_name("Ubuntu: Security Advisory for php7.0 (USN-4279-2)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2020 Greenbone Networks GmbH");
  script_family("Ubuntu Local Security Checks");
  script_dependencies("gather-package-list.nasl");
  script_mandatory_keys("ssh/login/ubuntu_linux", "ssh/login/packages", re:"ssh/login/release=UBUNTU16\.04 LTS");

  script_xref(name:"USN", value:"4279-2");
  script_xref(name:"URL", value:"https://lists.ubuntu.com/archives/ubuntu-security-announce/2020-February/005340.html");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'php7.0'
  package(s) announced via the USN-4279-2 advisory.");

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

  script_tag(name:"insight", value:"USN-4279-1 fixed vulnerabilities in PHP. The updated packages caused a regression.
This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

It was discovered that PHP incorrectly handled certain scripts.
An attacker could possibly use this issue to cause a denial of service.
This issue only affected Ubuntu 12.04 ESM, Ubuntu 14.04 ESM and Ubuntu 16.04 LTS.
(CVE-2015-9253)

It was discovered that PHP incorrectly handled certain inputs. An attacker
could possibly use this issue to expose sensitive information.
(CVE-2020-7059)

It was discovered that PHP incorrectly handled certain inputs.
An attacker could possibly use this issue to execute arbitrary code.
This issue only affected Ubuntu 14.04 ESM, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS
and Ubuntu 19.10. (CVE-2020-7060)");

  script_tag(name:"affected", value:"'php7.0' package(s) on Ubuntu 16.04 LTS.");

  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-deb.inc");

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

res = "";
report = "";

if(release == "UBUNTU16.04 LTS") {

  if(!isnull(res = isdpkgvuln(pkg:"libapache2-mod-php7.0", ver:"7.0.33-0ubuntu0.16.04.12", rls:"UBUNTU16.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"php7.0-cgi", ver:"7.0.33-0ubuntu0.16.04.12", rls:"UBUNTU16.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"php7.0-cli", ver:"7.0.33-0ubuntu0.16.04.12", rls:"UBUNTU16.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"php7.0-fpm", ver:"7.0.33-0ubuntu0.16.04.12", rls:"UBUNTU16.04 LTS"))) {
    report += res;
  }

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

exit(0);