Vulnerabilities > CVE-2019-20479 - Open Redirect vulnerability in multiple products
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
LOW Integrity impact
LOW Availability impact
NONE Summary
A flaw was found in mod_auth_openidc before version 2.4.1. An open redirect issue exists in URLs with a slash and backslash at the beginning.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Fake the Source of Data An adversary provides data under a falsified identity. The purpose of using the falsified identity may be to prevent traceability of the provided data or it might be an attempt by the adversary to assume the rights granted to another identity. One of the simplest forms of this attack would be the creation of an email message with a modified "From" field in order to appear that the message was sent from someone other than the actual sender. Results of the attack vary depending on the details of the attack, but common results include privilege escalation, obfuscation of other attacks, and data corruption/manipulation.
Nessus
NASL family SuSE Local Security Checks NASL id OPENSUSE-2020-376.NASL description This update for apache2-mod_auth_openidc fixes the following issues : - CVE-2019-20479: Fixed an open redirect issue in URLs with slash and backslash (bsc#1164459). This update was imported from the SUSE:SLE-15-SP1:Update update project. last seen 2020-03-31 modified 2020-03-26 plugin id 134932 published 2020-03-26 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/134932 title openSUSE Security Update : apache2-mod_auth_openidc (openSUSE-2020-376) code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from openSUSE Security Update openSUSE-2020-376. # # The text description of this plugin is (C) SUSE LLC. # include("compat.inc"); if (description) { script_id(134932); script_version("1.2"); script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/30"); script_cve_id("CVE-2019-20479"); script_name(english:"openSUSE Security Update : apache2-mod_auth_openidc (openSUSE-2020-376)"); script_summary(english:"Check for the openSUSE-2020-376 patch"); script_set_attribute( attribute:"synopsis", value:"The remote openSUSE host is missing a security update." ); script_set_attribute( attribute:"description", value: "This update for apache2-mod_auth_openidc fixes the following issues : - CVE-2019-20479: Fixed an open redirect issue in URLs with slash and backslash (bsc#1164459). This update was imported from the SUSE:SLE-15-SP1:Update update project." ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1164459" ); script_set_attribute( attribute:"solution", value:"Update the affected apache2-mod_auth_openidc packages." ); script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N"); 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:R/S:C/C:L/I:L/A:N"); 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:novell:opensuse:apache2-mod_auth_openidc"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:apache2-mod_auth_openidc-debuginfo"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:apache2-mod_auth_openidc-debugsource"); script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:15.1"); script_set_attribute(attribute:"vuln_publication_date", value:"2020/02/20"); script_set_attribute(attribute:"patch_publication_date", value:"2020/03/25"); script_set_attribute(attribute:"plugin_publication_date", value:"2020/03/26"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"SuSE Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/SuSE/release", "Host/SuSE/rpm-list", "Host/cpu"); 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/SuSE/release"); if (isnull(release) || release =~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "openSUSE"); if (release !~ "^(SUSE15\.1)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "15.1", release); if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); ourarch = get_kb_item("Host/cpu"); if (!ourarch) audit(AUDIT_UNKNOWN_ARCH); if (ourarch !~ "^(x86_64)$") audit(AUDIT_ARCH_NOT, "x86_64", ourarch); flag = 0; if ( rpm_check(release:"SUSE15.1", reference:"apache2-mod_auth_openidc-2.3.8-lp151.2.6.1") ) flag++; if ( rpm_check(release:"SUSE15.1", reference:"apache2-mod_auth_openidc-debuginfo-2.3.8-lp151.2.6.1") ) flag++; if ( rpm_check(release:"SUSE15.1", reference:"apache2-mod_auth_openidc-debugsource-2.3.8-lp151.2.6.1") ) 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, "apache2-mod_auth_openidc / apache2-mod_auth_openidc-debuginfo / etc"); }
NASL family SuSE Local Security Checks NASL id SUSE_SU-2020-0706-1.NASL description This update for apache2-mod_auth_openidc fixes the following issues : CVE-2019-20479: Fixed an open redirect issue in URLs with slash and backslash (bsc#1164459). Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-03-21 modified 2020-03-18 plugin id 134656 published 2020-03-18 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/134656 title SUSE SLES12 Security Update : apache2-mod_auth_openidc (SUSE-SU-2020:0706-1) NASL family Debian Local Security Checks NASL id DEBIAN_DLA-2130.NASL description An issue has been found in libapache2-mod-auth-openidc, an OpenID Connect authentication module for Apache. Due to insufficient validatation of URLs an Open Redirect vulnerability for URLs beginning with a slash and backslash could be abused. For Debian 8 last seen 2020-03-17 modified 2020-03-02 plugin id 134181 published 2020-03-02 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/134181 title Debian DLA-2130-1 : libapache2-mod-auth-openidc security NASL family SuSE Local Security Checks NASL id SUSE_SU-2020-0705-1.NASL description This update for apache2-mod_auth_openidc fixes the following issues : CVE-2019-20479: Fixed an open redirect issue in URLs with slash and backslash (bsc#1164459). Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-03-21 modified 2020-03-18 plugin id 134655 published 2020-03-18 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/134655 title SUSE SLES15 Security Update : apache2-mod_auth_openidc (SUSE-SU-2020:0705-1)
References
- https://github.com/zmartzone/mod_auth_openidc/commit/02431c0adfa30f478cf2eb20ed6ea51fdf446be7
- https://github.com/zmartzone/mod_auth_openidc/pull/453
- https://lists.debian.org/debian-lts-announce/2020/02/msg00035.html
- http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00036.html
- https://lists.debian.org/debian-lts-announce/2020/07/msg00028.html
- https://lists.debian.org/debian-lts-announce/2023/04/msg00034.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/27XJYAEONKJDESNE7WVZF5D2Z2OBY5JK/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NGXONXPWTX7DV62TIUIUVOZF4KQ6SIJE/