Vulnerabilities > CVE-2016-7998 - Improper Input Validation vulnerability in Spip

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DLA-695-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(94476);
  script_version("2.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/12");

  script_cve_id("CVE-2016-7980", "CVE-2016-7981", "CVE-2016-7982", "CVE-2016-7998", "CVE-2016-7999");

  script_name(english:"Debian DLA-695-1 : spip security update");
  script_summary(english:"Checks dpkg output for the updated package.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Debian host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Multiple vulnerabilities have been discovered in SPIP, a website
engine for publishing written in PHP.

CVE-2016-7980

Nicolas Chatelain of Sysdream Labs discovered a cross-site request
forgery (CSRF) vulnerability in the valider_xml action of SPIP. This
allows remote attackers to make use of potential additional
vulnerabilities such as the one described in CVE-2016-7998.

CVE-2016-7981

Nicolas Chatelain of Sysdream Labs discovered a reflected cross-site
scripting attack (XSS) vulnerability in the validater_xml action of
SPIP. An attacker could take advantage of this vulnerability to inject
arbitrary code by tricking an administrator to open a malicious link.

CVE-2016-7982

Nicolas Chatelain of Sysdream Labs discovered a file enumeration /
path traversal attack in the the validator_xml action of SPIP. An
attacker could use this to enumerate files in an arbitrary directory
on the file system.

CVE-2016-7998

Nicolas Chatelain of Sysdream Labs discovered a possible PHP code
execution vulnerability in the template compiler/composer function of
SPIP. In combination with the XSS and CSRF vulnerabilities described
in this advisory, a remote attacker could take advantage of this to
execute arbitrary PHP code on the server.

CVE-2016-7999

Nicolas Chatelain of Sysdream Labs discovered a server side request
forgery in the valider_xml action of SPIP. Attackers could take
advantage of this vulnerability to send HTTP or FTP requests to remote
servers that they don't have direct access to, possibly bypassing
access controls such as a firewall.

For Debian 7 'Wheezy', these problems have been fixed in version
2.1.17-1+deb7u6.

We recommend that you upgrade your spip packages.

NOTE: Tenable Network Security has extracted the preceding description
block directly from the DLA 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://lists.debian.org/debian-lts-announce/2016/11/msg00003.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/wheezy/spip"
  );
  script_set_attribute(attribute:"solution", value:"Upgrade the affected spip package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:spip");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:7.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2016/11/02");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/11/03");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Debian Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");

  exit(0);
}


include("audit.inc");
include("debian_package.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian");
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;
if (deb_check(release:"7.0", prefix:"spip", reference:"2.1.17-1+deb7u6")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:deb_report_get());
  else security_warning(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");