Vulnerabilities > CVE-2019-0193 - Code Injection vulnerability in multiple products

047910
CVSS 7.2 - HIGH
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
HIGH
Confidentiality impact
HIGH
Integrity impact
HIGH
Availability impact
HIGH
network
low complexity
apache
debian
CWE-94
nessus

Summary

In Apache Solr, the DataImportHandler, an optional but popular module to pull in data from databases and other sources, has a feature in which the whole DIH configuration can come from a request's "dataConfig" parameter. The debug mode of the DIH admin screen uses this to allow convenient debugging / development of a DIH config. Since a DIH config can contain scripts, this parameter is a security risk. Starting with version 8.2.0 of Solr, use of this parameter requires setting the Java System property "enable.dih.dataConfigParam" to true.

Vulnerable Configurations

Part Description Count
Application
Apache
95
OS
Debian
2

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Leverage Executable Code in Non-Executable Files
    An attack of this type exploits a system's trust in configuration and resource files, when the executable loads the resource (such as an image file or configuration file) the attacker has modified the file to either execute malicious code directly or manipulate the target process (e.g. application server) to execute based on the malicious configuration parameters. Since systems are increasingly interrelated mashing up resources from local and remote sources the possibility of this attack occurring is high. The attack can be directed at a client system, such as causing buffer overrun through loading seemingly benign image files, as in Microsoft Security Bulletin MS04-028 where specially crafted JPEG files could cause a buffer overrun once loaded into the browser. Another example targets clients reading pdf files. In this case the attacker simply appends javascript to the end of a legitimate url for a pdf (http://www.gnucitizen.org/blog/danger-danger-danger/) http://path/to/pdf/file.pdf#whatever_name_you_want=javascript:your_code_here The client assumes that they are reading a pdf, but the attacker has modified the resource and loaded executable javascript into the client's browser process. The attack can also target server processes. The attacker edits the resource or configuration file, for example a web.xml file used to configure security permissions for a J2EE app server, adding role name "public" grants all users with the public role the ability to use the administration functionality. The server trusts its configuration file to be correct, but when they are manipulated, the attacker gains full control.
  • Manipulating User-Controlled Variables
    This attack targets user controlled variables (DEBUG=1, PHP Globals, and So Forth). An attacker can override environment variables leveraging user-supplied, untrusted query variables directly used on the application server without any data sanitization. In extreme cases, the attacker can change variables controlling the business logic of the application. For instance, in languages like PHP, a number of poorly set default configurations may allow the user to override variables.

Nessus

NASL familyDebian Local Security Checks
NASL idDEBIAN_DLA-1954.NASL
descriptionA security vulnerability was discovered in lucene-solr, an enterprise search server. The DataImportHandler, an optional but popular module to pull in data from databases and other sources, has a feature in which the whole DIH configuration can come from a request
last seen2020-06-01
modified2020-06-02
plugin id129800
published2019-10-11
reporterThis script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/129800
titleDebian DLA-1954-1 : lucene-solr security update
code
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DLA-1954-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(129800);
  script_version("1.2");
  script_cvs_date("Date: 2019/12/19");

  script_cve_id("CVE-2019-0193");

  script_name(english:"Debian DLA-1954-1 : lucene-solr security update");
  script_summary(english:"Checks dpkg output for the updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Debian host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"A security vulnerability was discovered in lucene-solr, an enterprise
search server.

The DataImportHandler, an optional but popular module to pull in data
from databases and other sources, has a feature in which the whole DIH
configuration can come from a request's 'dataConfig' parameter. The
debug mode of the DIH admin screen uses this to allow convenient
debugging / development of a DIH config. Since a DIH config can
contain scripts, this parameter is a security risk. Starting from now
on, use of this parameter requires setting the Java System property
'enable.dih.dataConfigParam' to true. For example this can be achieved
with solr-tomcat by adding -Denable.dih.dataConfigParam=true to
JAVA_OPTS in /etc/default/tomcat7.

For Debian 8 'Jessie', this problem has been fixed in version
3.6.2+dfsg-5+deb8u3.

We recommend that you upgrade your lucene-solr 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/2019/10/msg00013.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/jessie/lucene-solr"
  );
  script_set_attribute(attribute:"solution", value:"Upgrade the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:H/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:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:liblucene3-contrib-java");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:liblucene3-java");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:liblucene3-java-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libsolr-java");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:solr-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:solr-jetty");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:solr-tomcat");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:8.0");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/08/01");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/10/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/10/11");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2019 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:"8.0", prefix:"liblucene3-contrib-java", reference:"3.6.2+dfsg-5+deb8u3")) flag++;
if (deb_check(release:"8.0", prefix:"liblucene3-java", reference:"3.6.2+dfsg-5+deb8u3")) flag++;
if (deb_check(release:"8.0", prefix:"liblucene3-java-doc", reference:"3.6.2+dfsg-5+deb8u3")) flag++;
if (deb_check(release:"8.0", prefix:"libsolr-java", reference:"3.6.2+dfsg-5+deb8u3")) flag++;
if (deb_check(release:"8.0", prefix:"solr-common", reference:"3.6.2+dfsg-5+deb8u3")) flag++;
if (deb_check(release:"8.0", prefix:"solr-jetty", reference:"3.6.2+dfsg-5+deb8u3")) flag++;
if (deb_check(release:"8.0", prefix:"solr-tomcat", reference:"3.6.2+dfsg-5+deb8u3")) flag++;

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

References