Vulnerabilities > CVE-2008-5153 - Link Following vulnerability in Moodle 1.8.2

047910
CVSS 6.9 - MEDIUM
Attack vector
LOCAL
Attack complexity
MEDIUM
Privileges required
NONE
Confidentiality impact
COMPLETE
Integrity impact
COMPLETE
Availability impact
COMPLETE
local
moodle
CWE-59
nessus
NVD
Published: 2008-11-18
Updated: 2017-08-08

Summary

spell-check-logic.cgi in Moodle 1.8.2 allows local users to overwrite arbitrary files via a symlink attack on the (1) /tmp/spell-check-debug.log, (2) /tmp/spell-check-before, or (3) /tmp/spell-check-after temporary file.

Vulnerable Configurations

Part Description Count
Application
Moodle
1

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Symlink Attack
    An attacker positions a symbolic link in such a manner that the targeted user or application accesses the link's endpoint, assuming that it is accessing a file with the link's name. The endpoint file may be either output or input. If the file is output, the result is that the endpoint is modified, instead of a file at the intended location. Modifications to the endpoint file may include appending, overwriting, corrupting, changing permissions, or other modifications. In some variants of this attack the attacker may be able to control the change to a file while in other cases they cannot. The former is especially damaging since the attacker may be able to grant themselves increased privileges or insert false information, but the latter can also be damaging as it can expose sensitive information or corrupt or destroy vital system or application files. Alternatively, the endpoint file may serve as input to the targeted application. This can be used to feed malformed input into the target or to cause the target to process different information, possibly allowing the attacker to control the actions of the target or to cause the target to expose information to the attacker. Moreover, the actions taken on the endpoint file are undertaken with the permissions of the targeted user or application, which may exceed the permissions that the attacker would normally have.
  • Accessing, Modifying or Executing Executable Files
    An attack of this type exploits a system's configuration that allows an attacker to either directly access an executable file, for example through shell access; or in a possible worst case allows an attacker to upload a file and then execute it. Web servers, ftp servers, and message oriented middleware systems which have many integration points are particularly vulnerable, because both the programmers and the administrators must be in synch regarding the interfaces and the correct privileges for each interface.
  • 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 Input to File System Calls
    An attacker manipulates inputs to the target software which the target software passes to file system calls in the OS. The goal is to gain access to, and perhaps modify, areas of the file system that the target software did not intend to be accessible.

Nessus

  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DSA-1724.NASL
    descriptionSeveral vulnerabilities have been discovered in Moodle, an online course management system. The Common Vulnerabilities and Exposures project identifies the following problems : - CVE-2009-0500 It was discovered that the information stored in the log tables was not properly sanitized, which could allow attackers to inject arbitrary web code. - CVE-2009-0502 It was discovered that certain input via the
    last seen2020-06-01
    modified2020-06-02
    plugin id35691
    published2009-02-17
    reporterThis script is Copyright (C) 2009-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/35691
    titleDebian DSA-1724-1 : moodle - several vulnerabilities
    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 DSA-1724. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(35691);
  script_version("1.14");
  script_cvs_date("Date: 2019/08/02 13:32:21");

  script_cve_id("CVE-2008-5153", "CVE-2009-0500", "CVE-2009-0502");
  script_bugtraq_id(32402, 33610);
  script_xref(name:"DSA", value:"1724");

  script_name(english:"Debian DSA-1724-1 : moodle - several vulnerabilities");
  script_summary(english:"Checks dpkg output for the updated package");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Debian host is missing a security-related update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Several vulnerabilities have been discovered in Moodle, an online
course management system. The Common Vulnerabilities and Exposures
project identifies the following problems :

  - CVE-2009-0500
    It was discovered that the information stored in the log
    tables was not properly sanitized, which could allow
    attackers to inject arbitrary web code.

  - CVE-2009-0502
    It was discovered that certain input via the 'Login as'
    function was not properly sanitised leading to the
    injection of arbitrary web script.

  - CVE-2008-5153
    Dmitry E. Oboukhov discovered that the SpellCheker
    plugin creates temporary files insecurely, allowing a
    denial of service attack. Since the plugin was unused,
    it is removed in this update."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=514284"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2009-0500"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2009-0502"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2008-5153"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.debian.org/security/2009/dsa-1724"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade the moodle package.

For the stable distribution (etch) these problems have been fixed in
version 1.6.3-2+etch2.

For the testing (lenny) distribution these problems have been fixed in
version 1.8.2.dfsg-3+lenny1.

For the unstable (sid) distribution these problems have been fixed in
version 1.8.2.dfsg-4."
  );
  script_set_cvss_base_vector("CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(59, 79);

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:moodle");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:4.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2009/02/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2009/02/17");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2009-2019 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:"4.0", prefix:"moodle", reference:"1.6.3-2+etch2")) 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");
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2009-0819.NASL
    descriptionFix for spellcheck security flaw, and some font correction. Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-06-01
    modified2020-06-02
    plugin id37773
    published2009-04-23
    reporterThis script is Copyright (C) 2009-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/37773
    titleFedora 10 : moodle-1.9.3-5.fc10 (2009-0819)
    code
    #%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Fedora Security Advisory 2009-0819.
#

include("compat.inc");

if (description)
{
  script_id(37773);
  script_version ("1.12");
  script_cvs_date("Date: 2019/08/02 13:32:28");

  script_cve_id("CVE-2008-5153");
  script_xref(name:"FEDORA", value:"2009-0819");

  script_name(english:"Fedora 10 : moodle-1.9.3-5.fc10 (2009-0819)");
  script_summary(english:"Checks rpm output for the updated package.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Fedora host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Fix for spellcheck security flaw, and some font correction.

Note that Tenable Network Security has extracted the preceding
description block directly from the Fedora 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://bugzilla.redhat.com/show_bug.cgi?id=472117"
  );
  # https://lists.fedoraproject.org/pipermail/package-announce/2009-January/019237.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?e02e74f0"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected moodle package."
  );
  script_set_cvss_base_vector("CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C");
  script_cwe_id(59);

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:moodle");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:10");

  script_set_attribute(attribute:"patch_publication_date", value:"2009/01/21");
  script_set_attribute(attribute:"plugin_publication_date", value:"2009/04/23");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2009-2019 Tenable Network Security, Inc.");
  script_family(english:"Fedora Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("rpm.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora");
os_ver = eregmatch(pattern: "Fedora.*release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora");
os_ver = os_ver[1];
if (! ereg(pattern:"^10([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 10.x", "Fedora " + os_ver);

if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Fedora", cpu);

flag = 0;
if (rpm_check(release:"FC10", reference:"moodle-1.9.3-5.fc10")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
  else security_warning(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "moodle");
}
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2009-0814.NASL
    descriptionFix for spellcheck security flaw, and some font correction. Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-06-01
    modified2020-06-02
    plugin id35440
    published2009-01-22
    reporterThis script is Copyright (C) 2009-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/35440
    titleFedora 9 : moodle-1.9.3-5.fc9 (2009-0814)
    code
    #%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Fedora Security Advisory 2009-0814.
#

include("compat.inc");

if (description)
{
  script_id(35440);
  script_version ("1.15");
  script_cvs_date("Date: 2019/08/02 13:32:28");

  script_cve_id("CVE-2008-5153");
  script_bugtraq_id(32402);
  script_xref(name:"FEDORA", value:"2009-0814");

  script_name(english:"Fedora 9 : moodle-1.9.3-5.fc9 (2009-0814)");
  script_summary(english:"Checks rpm output for the updated package.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Fedora host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Fix for spellcheck security flaw, and some font correction.

Note that Tenable Network Security has extracted the preceding
description block directly from the Fedora 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://bugzilla.redhat.com/show_bug.cgi?id=472117"
  );
  # https://lists.fedoraproject.org/pipermail/package-announce/2009-January/019235.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?c5502c34"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected moodle package."
  );
  script_set_cvss_base_vector("CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(59);

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:moodle");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:9");

  script_set_attribute(attribute:"patch_publication_date", value:"2009/01/21");
  script_set_attribute(attribute:"plugin_publication_date", value:"2009/01/22");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2009-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Fedora Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("rpm.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora");
os_ver = eregmatch(pattern: "Fedora.*release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora");
os_ver = os_ver[1];
if (! ereg(pattern:"^9([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 9.x", "Fedora " + os_ver);

if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Fedora", cpu);

flag = 0;
if (rpm_check(release:"FC9", reference:"moodle-1.9.3-5.fc9")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
  else security_warning(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "moodle");
}
  • NASL familyUbuntu Local Security Checks
    NASL idUBUNTU_USN-791-1.NASL
    descriptionThor Larholm discovered that PHPMailer, as used by Moodle, did not correctly escape email addresses. A local attacker with direct access to the Moodle database could exploit this to execute arbitrary commands as the web server user. (CVE-2007-3215) Nigel McNie discovered that fetching https URLs did not correctly escape shell meta-characters. An authenticated remote attacker could execute arbitrary commands as the web server user, if curl was installed and configured. (CVE-2008-4796, MSA-09-0003) It was discovered that Smarty (also included in Moodle), did not correctly filter certain inputs. An authenticated remote attacker could exploit this to execute arbitrary PHP commands as the web server user. (CVE-2008-4810, CVE-2008-4811, CVE-2009-1669) It was discovered that the unused SpellChecker extension in Moodle did not correctly handle temporary files. If the tool had been locally modified, it could be made to overwrite arbitrary local files via symlinks. (CVE-2008-5153) Mike Churchward discovered that Moodle did not correctly filter Wiki page titles in certain areas. An authenticated remote attacker could exploit this to cause cross-site scripting (XSS), which could be used to modify or steal confidential data of other users within the same web domain. (CVE-2008-5432, MSA-08-0022) It was discovered that the HTML sanitizer,
    last seen2020-06-01
    modified2020-06-02
    plugin id39516
    published2009-06-25
    reporterUbuntu Security Notice (C) 2009-2019 Canonical, Inc. / NASL script (C) 2009-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/39516
    titleUbuntu 8.04 LTS / 8.10 : moodle vulnerabilities (USN-791-1)
    code
    #%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-791-1. The text 
# itself is copyright (C) Canonical, Inc. See 
# <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered 
# trademark of Canonical, Inc.
#

include("compat.inc");

if (description)
{
  script_id(39516);
  script_version("1.23");
  script_cvs_date("Date: 2019/08/02 13:33:02");

  script_cve_id("CVE-2007-3215", "CVE-2008-4796", "CVE-2008-4810", "CVE-2008-4811", "CVE-2008-5153", "CVE-2008-5432", "CVE-2008-5619", "CVE-2008-6124", "CVE-2009-0499", "CVE-2009-0500", "CVE-2009-0501", "CVE-2009-0502", "CVE-2009-1171", "CVE-2009-1669");
  script_bugtraq_id(31862, 31887, 32402, 32799, 33610, 33612, 34278, 34918);
  script_xref(name:"USN", value:"791-1");

  script_name(english:"Ubuntu 8.04 LTS / 8.10 : moodle vulnerabilities (USN-791-1)");
  script_summary(english:"Checks dpkg output for updated package.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Ubuntu host is missing a security-related patch."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Thor Larholm discovered that PHPMailer, as used by Moodle, did not
correctly escape email addresses. A local attacker with direct access
to the Moodle database could exploit this to execute arbitrary
commands as the web server user. (CVE-2007-3215)

Nigel McNie discovered that fetching https URLs did not correctly
escape shell meta-characters. An authenticated remote attacker could
execute arbitrary commands as the web server user, if curl was
installed and configured. (CVE-2008-4796, MSA-09-0003)

It was discovered that Smarty (also included in Moodle), did not
correctly filter certain inputs. An authenticated remote attacker
could exploit this to execute arbitrary PHP commands as the web server
user. (CVE-2008-4810, CVE-2008-4811, CVE-2009-1669)

It was discovered that the unused SpellChecker extension in Moodle did
not correctly handle temporary files. If the tool had been locally
modified, it could be made to overwrite arbitrary local files via
symlinks. (CVE-2008-5153)

Mike Churchward discovered that Moodle did not correctly filter Wiki
page titles in certain areas. An authenticated remote attacker could
exploit this to cause cross-site scripting (XSS), which could be used
to modify or steal confidential data of other users within the same
web domain. (CVE-2008-5432, MSA-08-0022)

It was discovered that the HTML sanitizer, 'Login as' feature, and
logging in Moodle did not correctly handle certain inputs. An
authenticated remote attacker could exploit this to generate XSS,
which could be used to modify or steal confidential data of other
users within the same web domain. (CVE-2008-5619, CVE-2009-0500,
CVE-2009-0502, MSA-08-0026, MSA-09-0004, MSA-09-0007)

It was discovered that the HotPot module in Moodle did not correctly
filter SQL inputs. An authenticated remote attacker could execute
arbitrary SQL commands as the moodle database user, leading to a loss
of privacy or denial of service. (CVE-2008-6124, MSA-08-0010)

Kevin Madura discovered that the forum actions and messaging settings
in Moodle were not protected from cross-site request forgery (CSRF).
If an authenticated user were tricked into visiting a malicious
website while logged into Moodle, a remote attacker could change the
user's configurations or forum content. (CVE-2009-0499, MSA-09-0008,
MSA-08-0023)

Daniel Cabezas discovered that Moodle would leak usernames from the
Calendar Export tool. A remote attacker could gather a list of users,
leading to a loss of privacy. (CVE-2009-0501, MSA-09-0006)

Christian Eibl discovered that the TeX filter in Moodle allowed any
function to be used. An authenticated remote attacker could post a
specially crafted TeX formula to execute arbitrary TeX functions,
potentially reading any file accessible to the web server user,
leading to a loss of privacy. (CVE-2009-1171, MSA-09-0009)

Johannes Kuhn discovered that Moodle did not correctly validate user
permissions when attempting to switch user accounts. An authenticated
remote attacker could switch to any other Moodle user, leading to a
loss of privacy. (MSA-08-0003)

Hanno Boeck discovered that unconfigured Moodle instances contained
XSS vulnerabilities. An unauthenticated remote attacker could exploit
this to modify or steal confidential data of other users within the
same web domain. (MSA-08-0004)

Debbie McDonald, Mauno Korpelainen, Howard Miller, and Juan Segarra
Montesinos discovered that when users were deleted from Moodle, their
profiles and avatars were still visible. An authenticated remote
attacker could exploit this to store information in profiles even
after they were removed, leading to spam traffic. (MSA-08-0015,
MSA-09-0001, MSA-09-0002)

Lars Vogdt discovered that Moodle did not correctly filter certain
inputs. An authenticated remote attacker could exploit this to
generate XSS from which they could modify or steal confidential data
of other users within the same web domain. (MSA-08-0021)

It was discovered that Moodle did not correctly filter inputs for
group creation, mnet, essay question, HOST param, wiki param, and
others. An authenticated remote attacker could exploit this to
generate XSS from which they could modify or steal confidential data
of other users within the same web domain. (MDL-9288, MDL-11759,
MDL-12079, MDL-12793, MDL-14806)

It was discovered that Moodle did not correctly filter SQL inputs when
performing a restore. An attacker authenticated as a Moodle
administrator could execute arbitrary SQL commands as the moodle
database user, leading to a loss of privacy or denial of service.
(MDL-11857).

Note that Tenable Network Security has extracted the preceding
description block directly from the Ubuntu 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://usn.ubuntu.com/791-1/"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected moodle package."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploit_framework_core", value:"true");
  script_set_attribute(attribute:"d2_elliot_name", value:"Roundcube 0.2beta RCE");
  script_set_attribute(attribute:"exploit_framework_d2_elliot", value:"true");
  script_set_attribute(attribute:"exploit_framework_canvas", value:"true");
  script_set_attribute(attribute:"canvas_package", value:'CANVAS');
  script_cwe_id(20, 59, 79, 89, 94, 264, 352);

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:moodle");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:8.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:8.10");

  script_set_attribute(attribute:"vuln_publication_date", value:"2007/06/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2009/06/24");
  script_set_attribute(attribute:"plugin_publication_date", value:"2009/06/25");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2009-2019 Canonical, Inc. / NASL script (C) 2009-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Ubuntu Local Security Checks");

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

  exit(0);
}


include("audit.inc");
include("ubuntu.inc");
include("misc_func.inc");

if ( ! get_kb_item("Host/local_checks_enabled") ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/Ubuntu/release");
if ( isnull(release) ) audit(AUDIT_OS_NOT, "Ubuntu");
release = chomp(release);
if (! ereg(pattern:"^(8\.04|8\.10)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 8.04 / 8.10", "Ubuntu " + release);
if ( ! get_kb_item("Host/Debian/dpkg-l") ) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Ubuntu", cpu);

flag = 0;

if (ubuntu_check(osver:"8.04", pkgname:"moodle", pkgver:"1.8.2-1ubuntu4.2")) flag++;
if (ubuntu_check(osver:"8.10", pkgname:"moodle", pkgver:"1.8.2-1.2ubuntu2.1")) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : ubuntu_report_get()
  );
  exit(0);
}
else
{
  tested = ubuntu_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "moodle");
}

References