Vulnerabilities > CVE-2015-8771 - Code Injection vulnerability in Gosa Project Gosa Plugin

047910
CVSS 7.5 - HIGH
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
PARTIAL
Integrity impact
PARTIAL
Availability impact
PARTIAL
network
low complexity
gosa-project
CWE-94
nessus
NVD
Published: 2017-02-13
Updated: 2017-03-02

Summary

The generate_smb_nt_hash function in include/functions.inc in GOsa allows remote attackers to execute arbitrary commands via a crafted password.

Vulnerable Configurations

Part Description Count
Application
Gosa_Project
1

Common Weakness Enumeration (CWE)

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-408.NASL
    descriptionGOsa is a combination of system-administrator and end-user web interface, designed to handle LDAP based setups. GOsa upstream reported a code injection vulnerability in the Samba plugin code of GOsa. During Samba password changes it has been possible to inject malicious Perl code. This upload to Debian Squeeze LTS fixes this issues. However, if you upgrade to this fixed package revision, please note that Samba password changes will stop working until the sambaHashHook parameter in gosa.conf has been updated to accept base64 encoded password strings from the PHP code of GOsa. Please read /usr/share/doc/gosa/NEWS.gz and the gosa.conf (5) man page after you have upgraded to this package revision and adapt gosa.conf as described there. 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.
    last seen2020-03-17
    modified2016-02-01
    plugin id88494
    published2016-02-01
    reporterThis script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/88494
    titleDebian DLA-408-1 : gosa security update
    code
    #%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-408-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(88494);
  script_version("2.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/12");

  script_cve_id("CVE-2015-8771");

  script_name(english:"Debian DLA-408-1 : gosa 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:
"GOsa is a combination of system-administrator and end-user web
interface, designed to handle LDAP based setups.

GOsa upstream reported a code injection vulnerability in the Samba
plugin code of GOsa. During Samba password changes it has been
possible to inject malicious Perl code.

This upload to Debian Squeeze LTS fixes this issues. However, if you
upgrade to this fixed package revision, please note that Samba
password changes will stop working until the sambaHashHook parameter
in gosa.conf has been updated to accept base64 encoded password
strings from the PHP code of GOsa.

Please read /usr/share/doc/gosa/NEWS.gz and the gosa.conf (5) man page
after you have upgraded to this package revision and adapt gosa.conf
as described there.

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/2016/01/msg00033.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/squeeze-lts/gosa"
  );
  script_set_attribute(attribute:"solution", value:"Upgrade the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/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:L/PR:N/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:"exploit_available", value:"false");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-desktop");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-help-de");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-help-en");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-help-fr");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-help-nl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-plugin-addressbook");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-plugin-connectivity");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-plugin-dhcp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-plugin-dhcp-schema");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-plugin-dns");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-plugin-dns-schema");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-plugin-fai");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-plugin-fai-schema");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-plugin-gofax");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-plugin-gofon");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-plugin-goto");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-plugin-kolab");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-plugin-kolab-schema");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-plugin-ldapmanager");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-plugin-log");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-plugin-log-schema");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-plugin-mail");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-plugin-mit-krb5");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-plugin-mit-krb5-schema");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-plugin-nagios");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-plugin-nagios-schema");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-plugin-netatalk");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-plugin-opengroupware");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-plugin-openxchange");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-plugin-openxchange-schema");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-plugin-opsi");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-plugin-phpgw");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-plugin-phpgw-schema");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-plugin-phpscheduleit");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-plugin-phpscheduleit-schema");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-plugin-pptp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-plugin-pptp-schema");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-plugin-pureftpd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-plugin-pureftpd-schema");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-plugin-rolemanagement");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-plugin-rsyslog");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-plugin-samba");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-plugin-scalix");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-plugin-squid");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-plugin-ssh");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-plugin-ssh-schema");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-plugin-sudo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-plugin-sudo-schema");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-plugin-systems");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-plugin-uw-imap");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-plugin-webdav");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gosa-schema");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:smarty-acl-render");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:6.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2016/01/31");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/02/01");
  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:"6.0", prefix:"gosa", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-desktop", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-dev", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-help-de", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-help-en", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-help-fr", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-help-nl", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-plugin-addressbook", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-plugin-connectivity", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-plugin-dhcp", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-plugin-dhcp-schema", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-plugin-dns", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-plugin-dns-schema", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-plugin-fai", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-plugin-fai-schema", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-plugin-gofax", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-plugin-gofon", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-plugin-goto", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-plugin-kolab", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-plugin-kolab-schema", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-plugin-ldapmanager", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-plugin-log", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-plugin-log-schema", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-plugin-mail", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-plugin-mit-krb5", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-plugin-mit-krb5-schema", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-plugin-nagios", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-plugin-nagios-schema", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-plugin-netatalk", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-plugin-opengroupware", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-plugin-openxchange", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-plugin-openxchange-schema", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-plugin-opsi", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-plugin-phpgw", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-plugin-phpgw-schema", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-plugin-phpscheduleit", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-plugin-phpscheduleit-schema", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-plugin-pptp", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-plugin-pptp-schema", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-plugin-pureftpd", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-plugin-pureftpd-schema", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-plugin-rolemanagement", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-plugin-rsyslog", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-plugin-samba", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-plugin-scalix", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-plugin-squid", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-plugin-ssh", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-plugin-ssh-schema", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-plugin-sudo", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-plugin-sudo-schema", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-plugin-systems", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-plugin-uw-imap", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-plugin-webdav", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"gosa-schema", reference:"2.6.11-3+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"smarty-acl-render", reference:"2.6.11-3+squeeze5")) 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");
  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DLA-562.NASL
    descriptionGOsa² is a combination of system-administrator and end-user web interface, designed to handle LDAP based setups. A code injection vulnerability in the Samba plugin code of GOsa has been discovered. During Samba password changes it has been possible to inject malicious Perl code. If you upgrade to this fixed package revision, please note that Samba password changes will stop working until the sambaHashHook parameter in gosa.conf has been updated to accept base64 encoded password strings. Please read the gosa.conf (5) man page after you have upgraded to this package revision and adapt gosa.conf as described there. For Debian 7
    last seen2020-03-17
    modified2016-07-27
    plugin id92569
    published2016-07-27
    reporterThis script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/92569
    titleDebian DLA-562-1 : gosa security update

References