Vulnerabilities > CVE-2019-12046 - Insufficiently Protected Credentials vulnerability in multiple products
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
HIGH Summary
LemonLDAP::NG -2.0.3 has Incorrect Access Control.
Vulnerable Configurations
Part | Description | Count |
---|---|---|
Application | 1 | |
OS | 1 |
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Session Sidejacking Session sidejacking takes advantage of an unencrypted communication channel between a victim and target system. The attacker sniffs traffic on a network looking for session tokens in unencrypted traffic. Once a session token is captured, the attacker performs malicious actions by using the stolen token with the targeted application to impersonate the victim. This attack is a specific method of session hijacking, which is exploiting a valid session token to gain unauthorized access to a target system or information. Other methods to perform a session hijacking are session fixation, cross-site scripting, or compromising a user or server machine and stealing the session token.
- Lifting credential(s)/key material embedded in client distributions (thick or thin) An attacker examines a target application's code or configuration files to find credential or key material that has been embedded within the application or its files. Many services require authentication with their users for the various purposes including billing, access control or attribution. Some client applications store the user's authentication credentials or keys to accelerate the login process. Some clients may have built-in keys or credentials (in which case the server is authenticating with the client, rather than the user). If the attacker is able to locate where this information is stored, they may be able to retrieve these credentials. The attacker could then use these stolen credentials to impersonate the user or client, respectively, in interactions with the service or use stolen keys to eavesdrop on nominally secure communications between the client and server.
- Password Recovery Exploitation An attacker may take advantage of the application feature to help users recover their forgotten passwords in order to gain access into the system with the same privileges as the original user. Generally password recovery schemes tend to be weak and insecure. Most of them use only one security question . For instance, mother's maiden name tends to be a fairly popular one. Unfortunately in many cases this information is not very hard to find, especially if the attacker knows the legitimate user. These generic security questions are also re-used across many applications, thus making them even more insecure. An attacker could for instance overhear a coworker talking to a bank representative at the work place and supplying their mother's maiden name for verification purposes. An attacker can then try to log in into one of the victim's accounts, click on "forgot password" and there is a good chance that the security question there will be to provide mother's maiden name. A weak password recovery scheme totally undermines the effectiveness of a strong password scheme.
Nessus
NASL family Debian Local Security Checks NASL id DEBIAN_DLA-1790.NASL description Erratum: bad versions An attack vector was discovered by lemonldap-ng developers. When the SAML or CAS service provider is enable and the administrator has chosen to store SAML/CAS tokens in the session database, an attacker can open an anonymous session to connect to any protected application that does not have specific access rules. For Debian 8 last seen 2020-06-01 modified 2020-06-02 plugin id 125266 published 2019-05-20 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/125266 title Debian DLA-1790-1 : lemonldap-ng security update code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Debian Security Advisory DLA-1790-1. The text # itself is copyright (C) Software in the Public Interest, Inc. # include("compat.inc"); if (description) { script_id(125266); script_version("1.3"); script_cvs_date("Date: 2020/01/15"); script_cve_id("CVE-2019-12046"); script_name(english:"Debian DLA-1790-1 : lemonldap-ng 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: "Erratum: bad versions An attack vector was discovered by lemonldap-ng developers. When the SAML or CAS service provider is enable and the administrator has chosen to store SAML/CAS tokens in the session database, an attacker can open an anonymous session to connect to any protected application that does not have specific access rules. For Debian 8 'Jessie', this problem has been fixed in version 1.3.3-1+deb9u1. We recommend that you upgrade your lemonldap-ng 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/2019/05/msg00021.html" ); script_set_attribute( attribute:"see_also", value:"https://packages.debian.org/source/jessie/lemonldap-ng" ); 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:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:lemonldap-ng"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:lemonldap-ng-doc"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:liblemonldap-ng-common-perl"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:liblemonldap-ng-conf-perl"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:liblemonldap-ng-handler-perl"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:liblemonldap-ng-manager-perl"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:liblemonldap-ng-portal-perl"); script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:8.0"); script_set_attribute(attribute:"vuln_publication_date", value:"2019/05/22"); script_set_attribute(attribute:"patch_publication_date", value:"2019/05/18"); script_set_attribute(attribute:"plugin_publication_date", value:"2019/05/20"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2019-2020 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:"8.0", prefix:"lemonldap-ng", reference:"1.3.3-1+deb9u1")) flag++; if (deb_check(release:"8.0", prefix:"lemonldap-ng-doc", reference:"1.3.3-1+deb9u1")) flag++; if (deb_check(release:"8.0", prefix:"liblemonldap-ng-common-perl", reference:"1.3.3-1+deb9u1")) flag++; if (deb_check(release:"8.0", prefix:"liblemonldap-ng-conf-perl", reference:"1.3.3-1+deb9u1")) flag++; if (deb_check(release:"8.0", prefix:"liblemonldap-ng-handler-perl", reference:"1.3.3-1+deb9u1")) flag++; if (deb_check(release:"8.0", prefix:"liblemonldap-ng-manager-perl", reference:"1.3.3-1+deb9u1")) flag++; if (deb_check(release:"8.0", prefix:"liblemonldap-ng-portal-perl", reference:"1.3.3-1+deb9u1")) 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 family Debian Local Security Checks NASL id DEBIAN_DSA-4446.NASL description It was discovered that the Lemonldap::NG web SSO system performed insufficient validation of session tokens if the last seen 2020-06-01 modified 2020-06-02 plugin id 125097 published 2019-05-15 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/125097 title Debian DSA-4446-1 : lemonldap-ng - security update code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Debian Security Advisory DSA-4446. The text # itself is copyright (C) Software in the Public Interest, Inc. # include("compat.inc"); if (description) { script_id(125097); script_version("1.4"); script_cvs_date("Date: 2020/01/17"); script_cve_id("CVE-2019-12046"); script_xref(name:"DSA", value:"4446"); script_name(english:"Debian DSA-4446-1 : lemonldap-ng - 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-related update." ); script_set_attribute( attribute:"description", value: "It was discovered that the Lemonldap::NG web SSO system performed insufficient validation of session tokens if the 'tokenUseGlobalStorage'option is enabled, which could grant users with access to the main session database access to an anonymous session." ); # https://security-tracker.debian.org/tracker/source-package/lemonldap-ng script_set_attribute( attribute:"see_also", value:"http://www.nessus.org/u?9f8cb51e" ); script_set_attribute( attribute:"see_also", value:"https://packages.debian.org/source/stretch/lemonldap-ng" ); script_set_attribute( attribute:"see_also", value:"https://www.debian.org/security/2019/dsa-4446" ); script_set_attribute( attribute:"solution", value: "Upgrade the lemonldap-ng packages. For the stable distribution (stretch), this problem has been fixed in version 1.9.7-3+deb9u1." ); 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:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:lemonldap-ng"); script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:9.0"); script_set_attribute(attribute:"vuln_publication_date", value:"2019/05/22"); script_set_attribute(attribute:"patch_publication_date", value:"2019/05/14"); script_set_attribute(attribute:"plugin_publication_date", value:"2019/05/15"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2019-2020 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:"9.0", prefix:"lemonldap-ng", reference:"1.9.7-3+deb9u1")) flag++; if (deb_check(release:"9.0", prefix:"lemonldap-ng-doc", reference:"1.9.7-3+deb9u1")) flag++; if (deb_check(release:"9.0", prefix:"lemonldap-ng-fastcgi-server", reference:"1.9.7-3+deb9u1")) flag++; if (deb_check(release:"9.0", prefix:"lemonldap-ng-fr-doc", reference:"1.9.7-3+deb9u1")) flag++; if (deb_check(release:"9.0", prefix:"lemonldap-ng-handler", reference:"1.9.7-3+deb9u1")) flag++; if (deb_check(release:"9.0", prefix:"liblemonldap-ng-common-perl", reference:"1.9.7-3+deb9u1")) flag++; if (deb_check(release:"9.0", prefix:"liblemonldap-ng-conf-perl", reference:"1.9.7-3+deb9u1")) flag++; if (deb_check(release:"9.0", prefix:"liblemonldap-ng-handler-perl", reference:"1.9.7-3+deb9u1")) flag++; if (deb_check(release:"9.0", prefix:"liblemonldap-ng-manager-perl", reference:"1.9.7-3+deb9u1")) flag++; if (deb_check(release:"9.0", prefix:"liblemonldap-ng-portal-perl", reference:"1.9.7-3+deb9u1")) 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
- https://seclists.org/bugtraq/2019/May/38
- https://projects.ow2.org/view/lemonldap-ng/lemonldap-ng-2-0-4-is-out/
- https://projects.ow2.org/view/lemonldap-ng/lemonldap-ng-1-9-19-is-out/
- https://lemonldap-ng.org/download
- https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/issues/1744
- https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/issues/1743
- https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/issues/1742
- https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/commits/master