Vulnerabilities > CVE-2016-6614 - Path Traversal vulnerability in PHPmyadmin
Attack vector
NETWORK Attack complexity
HIGH Privileges required
NONE Confidentiality impact
HIGH Integrity impact
NONE Availability impact
NONE Summary
An issue was discovered in phpMyAdmin involving the %u username replacement functionality of the SaveDir and UploadDir features. When the username substitution is configured, a specially-crafted user name can be used to circumvent restrictions to traverse the file system. All 4.6.x versions (prior to 4.6.4), 4.4.x versions (prior to 4.4.15.8), and 4.0.x versions (prior to 4.0.10.17) are affected.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Relative Path Traversal An attacker exploits a weakness in input validation on the target by supplying a specially constructed path utilizing dot and slash characters for the purpose of obtaining access to arbitrary files or resources. An attacker modifies a known path on the target in order to reach material that is not available through intended channels. These attacks normally involve adding additional path separators (/ or \) and/or dots (.), or encodings thereof, in various combinations in order to reach parent directories or entirely separate trees of the target's directory structure.
- Directory Traversal An attacker with access to file system resources, either directly or via application logic, will use various file path specification or navigation mechanisms such as ".." in path strings and absolute paths to extend their range of access to inappropriate areas of the file system. The attacker attempts to either explore the file system for recon purposes or access directories and files that are intended to be restricted from their access. Exploring the file system can be achieved through constructing paths presented to directory listing programs, such as "ls" and 'dir', or through specially crafted programs that attempt to explore the file system. The attacker engaging in this type of activity is searching for information that can be used later in a more exploitive attack. Access to restricted directories or files can be achieved through modification of path references utilized by system applications.
- File System Function Injection, Content Based An attack of this type exploits the host's trust in executing remote content including binary files. The files are poisoned with a malicious payload (targeting the file systems accessible by the target software) by the attacker and may be passed through standard channels such as via email, and standard web content like PDF and multimedia files. The attacker exploits known vulnerabilities or handling routines in the target processes. Vulnerabilities of this type have been found in a wide variety of commercial applications from Microsoft Office to Adobe Acrobat and Apple Safari web browser. When the attacker knows the standard handling routines and can identify vulnerabilities and entry points they can be exploited by otherwise seemingly normal content. Once the attack is executed, the attackers' program can access relative directories such as C:\Program Files or other standard system directories to launch further attacks. In a worst case scenario, these programs are combined with other propagation logic and work as a virus.
- Using Slashes and URL Encoding Combined to Bypass Validation Logic This attack targets the encoding of the URL combined with the encoding of the slash characters. An attacker can take advantage of the multiple way of encoding an URL and abuse the interpretation of the URL. An URL may contain special character that need special syntax handling in order to be interpreted. Special characters are represented using a percentage character followed by two digits representing the octet code of the original character (%HEX-CODE). For instance US-ASCII space character would be represented with %20. This is often referred as escaped ending or percent-encoding. Since the server decodes the URL from the requests, it may restrict the access to some URL paths by validating and filtering out the URL requests it received. An attacker will try to craft an URL with a sequence of special characters which once interpreted by the server will be equivalent to a forbidden URL. It can be difficult to protect against this attack since the URL can contain other format of encoding such as UTF-8 encoding, Unicode-encoding, etc.
- 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 family Debian Local Security Checks NASL id DEBIAN_DLA-626.NASL description Phpmyadmin, a web administration tool for MySQL, had several vulnerabilities reported. CVE-2016-6606 A pair of vulnerabilities were found affecting the way cookies are stored. The decryption of the username/password is vulnerable to a padding oracle attack. The can allow an attacker who has access to a user last seen 2020-03-17 modified 2016-09-19 plugin id 93566 published 2016-09-19 reporter This script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/93566 title Debian DLA-626-1 : phpmyadmin 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-626-1. The text # itself is copyright (C) Software in the Public Interest, Inc. # include("compat.inc"); if (description) { script_id(93566); script_version("2.8"); script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/12"); script_cve_id("CVE-2016-6606", "CVE-2016-6607", "CVE-2016-6609", "CVE-2016-6611", "CVE-2016-6612", "CVE-2016-6613", "CVE-2016-6614", "CVE-2016-6620", "CVE-2016-6622", "CVE-2016-6623", "CVE-2016-6624", "CVE-2016-6630", "CVE-2016-6631"); script_name(english:"Debian DLA-626-1 : phpmyadmin 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 update." ); script_set_attribute( attribute:"description", value: "Phpmyadmin, a web administration tool for MySQL, had several vulnerabilities reported. CVE-2016-6606 A pair of vulnerabilities were found affecting the way cookies are stored. The decryption of the username/password is vulnerable to a padding oracle attack. The can allow an attacker who has access to a user's browser cookie file to decrypt the username and password. A vulnerability was found where the same initialization vector is used to hash the username and password stored in the phpMyAdmin cookie. If a user has the same password as their username, an attacker who examines the browser cookie can see that they are the same — but the attacker can not directly decode these values from the cookie as it is still hashed. CVE-2016-6607 Cross site scripting vulnerability in the replication feature CVE-2016-6609 A specially crafted database name could be used to run arbitrary PHP commands through the array export feature. CVE-2016-6611 A specially crafted database and/or table name can be used to trigger a SQL injection attack through the SQL export functionality. CVE-2016-6612 A user can exploit the LOAD LOCAL INFILE functionality to expose files on the server to the database system. CVE-2016-6613 A user can specially craft a symlink on disk, to a file which phpMyAdmin is permitted to read but the user is not, which phpMyAdmin will then expose to the user. CVE-2016-6614 A vulnerability was reported with the %u username replacement functionality of the SaveDir and UploadDir features. When the username substitution is configured, a specially crafted user name can be used to circumvent restrictions to traverse the file system. CVE-2016-6620 A vulnerability was reported where some data is passed to the PHP unserialize() function without verification that it's valid serialized data. Due to how the PHP function operates, unserialization can result in code being loaded and executed due to object instantiation and autoloading, and a malicious user may be able to exploit this. Therefore, a malicious user may be able to manipulate the stored data in a way to exploit this weakness. CVE-2016-6622 An unauthenticated user is able to execute a denial of service attack by forcing persistent connections when phpMyAdmin is running with $cfg['AllowArbitraryServer']=true;. CVE-2016-6623 A malicious authorized user can cause a denial of service attack on a server by passing large values to a loop. CVE-2016-6624 A vulnerability was discovered where, under certain circumstances, it may be possible to circumvent the phpMyAdmin IP-based authentication rules. When phpMyAdmin is used with IPv6 in a proxy server environment, and the proxy server is in the allowed range but the attacking computer is not allowed, this vulnerability can allow the attacking computer to connect despite the IP rules. CVE-2016-6630 An authenticated user can trigger a denial of service attack by entering a very long password at the change password dialog. CVE-2016-6631 A vulnerability was discovered where a user can execute a remote code execution attack against a server when phpMyAdmin is being run as a CGI application. Under certain server configurations, a user can pass a query string which is executed as a command-line argument by shell scripts. For Debian 7 'Wheezy', these problems have been fixed in version 3.4.11.1-2+deb7u6. We recommend that you upgrade your phpmyadmin 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/2016/09/msg00019.html" ); script_set_attribute( attribute:"see_also", value:"https://packages.debian.org/source/wheezy/phpmyadmin" ); script_set_attribute( attribute:"solution", value:"Upgrade the affected phpmyadmin package." ); script_set_cvss_base_vector("CVSS2#AV:N/AC:M/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: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:phpmyadmin"); script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:7.0"); script_set_attribute(attribute:"vuln_publication_date", value:"2016/12/11"); script_set_attribute(attribute:"patch_publication_date", value:"2016/09/17"); script_set_attribute(attribute:"plugin_publication_date", value:"2016/09/19"); script_set_attribute(attribute:"generated_plugin", value:"current"); 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:"7.0", prefix:"phpmyadmin", reference:"3.4.11.1-2+deb7u6")) 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_DLA-1415.NASL description Several vulnerabilities were found in phpMyAdmin, the web-based MySQL administration interface, including SQL injection attacks, denial of service, arbitrary code execution, cross-site scripting, server-side request forgery, authentication bypass, and file system traversal. For Debian 8 last seen 2020-06-01 modified 2020-06-02 plugin id 110945 published 2018-07-09 reporter This script is Copyright (C) 2018 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/110945 title Debian DLA-1415-1 : phpmyadmin security update code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Debian Security Advisory DLA-1415-1. The text # itself is copyright (C) Software in the Public Interest, Inc. # include("compat.inc"); if (description) { script_id(110945); script_version("1.3"); script_cvs_date("Date: 2018/08/08 12:52:14"); script_cve_id("CVE-2016-6609", "CVE-2016-6614", "CVE-2016-6615", "CVE-2016-6616", "CVE-2016-6618", "CVE-2016-6619", "CVE-2016-6620", "CVE-2016-6621", "CVE-2016-6622", "CVE-2016-9865", "CVE-2017-18264"); script_name(english:"Debian DLA-1415-1 : phpmyadmin 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 update." ); script_set_attribute( attribute:"description", value: "Several vulnerabilities were found in phpMyAdmin, the web-based MySQL administration interface, including SQL injection attacks, denial of service, arbitrary code execution, cross-site scripting, server-side request forgery, authentication bypass, and file system traversal. For Debian 8 'Jessie', these problems have been fixed in version 4:4.2.12-2+deb8u3. We recommend that you upgrade your phpmyadmin 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/2018/07/msg00006.html" ); script_set_attribute( attribute:"see_also", value:"https://packages.debian.org/source/jessie/phpmyadmin" ); script_set_attribute( attribute:"solution", value:"Upgrade the affected phpmyadmin package." ); 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:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:phpmyadmin"); script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:8.0"); script_set_attribute(attribute:"patch_publication_date", value:"2018/07/06"); script_set_attribute(attribute:"plugin_publication_date", value:"2018/07/09"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2018 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:"phpmyadmin", reference:"4:4.2.12-2+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");
NASL family CGI abuses NASL id PHPMYADMIN_PMASA_2016_29.NASL description According to its self-reported version number, the phpMyAdmin application hosted on the remote web server is 4.0.x prior to 4.0.10.17, 4.4.x prior to 4.4.15.8, or 4.6.x prior to 4.6.4. It is, therefore, affected by the following vulnerabilities : - An information disclosure vulnerability exists due to the use of an algorithm that is vulnerable to padding oracle attacks. An unauthenticated, remote attacker can exploit this to decrypt information without the key, resulting in the disclosure of usernames and passwords. (CVE-2016-6606) - A cross-site scripting (XSS) vulnerability exists in the replication_gui.lib.php script due to improper validation of user-supplied input to the last seen 2020-06-01 modified 2020-06-02 plugin id 95027 published 2016-11-21 reporter This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/95027 title phpMyAdmin 4.0.x < 4.0.10.17 / 4.4.x < 4.4.15.8 / 4.6.x < 4.6.4 Multiple Vulnerabilities (PMASA-2016-29 - PMASA-2016-56) NASL family SuSE Local Security Checks NASL id OPENSUSE-2016-1021.NASL description phpMyAdmin was updated to version 4.4.15.8 (2016-08-16) to fix the following issues : - Upstream changelog for 4.4.15.8 : - Improve session cookie code for openid.php and signon.php example files - Full path disclosure in openid.php and signon.php example files - Unsafe generation of BlowfishSecret (when not supplied by the user) - Referrer leak when phpinfo is enabled - Use HTTPS for wiki links - Improve SSL certificate handling - Fix full path disclosure in debugging code - Administrators could trigger SQL injection attack against users - other fixes - Remove Swekey support - Security fixes: https://www.phpmyadmin.net/security/ - Weaknesses with cookie encryption see PMASA-2016-29 (CVE-2016-6606, CWE-661) - Multiple XSS vulnerabilities see PMASA-2016-30 (CVE-2016-6607, CWE-661) - Multiple XSS vulnerabilities see PMASA-2016-31 (CVE-2016-6608, CWE-661) - PHP code injection see PMASA-2016-32 (CVE-2016-6609, CWE-661) - Full path disclosure see PMASA-2016-33 (CVE-2016-6610, CWE-661) - SQL injection attack see PMASA-2016-34 (CVE-2016-6611, CWE-661) - Local file exposure through LOAD DATA LOCAL INFILE see PMASA-2016-35 (CVE-2016-6612, CWE-661) - Local file exposure through symlinks with UploadDir see PMASA-2016-36 (CVE-2016-6613, CWE-661) - Path traversal with SaveDir and UploadDir see PMASA-2016-37 (CVE-2016-6614, CWE-661) - Multiple XSS vulnerabilities see PMASA-2016-38 (CVE-2016-6615, CWE-661) - SQL injection vulnerability as control user see PMASA-2016-39 (CVE-2016-6616, CWE-661) - SQL injection vulnerability see PMASA-2016-40 (CVE-2016-6617, CWE-661) - Denial-of-service attack through transformation feature see PMASA-2016-41 (CVE-2016-6618, CWE-661) - SQL injection vulnerability as control user see PMASA-2016-42 (CVE-2016-6619, CWE-661) - Verify data before unserializing see PMASA-2016-43 (CVE-2016-6620, CWE-661) - SSRF in setup script see PMASA-2016-44 (CVE-2016-6621, CWE-661) - Denial-of-service attack with $cfg[ last seen 2020-06-05 modified 2016-08-30 plugin id 93212 published 2016-08-30 reporter This script is Copyright (C) 2016-2020 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/93212 title openSUSE Security Update : phpMyAdmin (openSUSE-2016-1021) NASL family FreeBSD Local Security Checks NASL id FREEBSD_PKG_EF70B201645D11E69CDC6805CA0B3D42.NASL description The phpmyadmin development team reports : Weakness with cookie encryption Multiple XSS vulnerabilities Multiple XSS vulnerabilities PHP code injection Full path disclosure SQL injection attack Local file exposure Local file exposure through symlinks with UploadDir Path traversal with SaveDir and UploadDir Multiple XSS vulnerabilities SQL injection attack SQL injection attack Denial of service (DOS) attack in transformation feature SQL injection attack as control user Unvalidated data passed to unserialize() DOS attack with forced persistent connections Denial of service (DOS) attack by for loops IPv6 and proxy server IP-based authentication rule circumvention Detect if user is logged in Bypass URL redirect protection Referrer leak in url.php Reflected File Download attack ArbitraryServerRegexp bypass Denial of service (DOS) attack by changing password to a very long string Remote code execution vulnerability when run as CGI Summary Denial of service (DOS) attack with dbase extension Remote code execution vulnerability when PHP is running with dbase extension last seen 2020-06-01 modified 2020-06-02 plugin id 93024 published 2016-08-18 reporter This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/93024 title FreeBSD : phpmyadmin -- multiple vulnerabilities (ef70b201-645d-11e6-9cdc-6805ca0b3d42) NASL family Gentoo Local Security Checks NASL id GENTOO_GLSA-201701-32.NASL description The remote host is affected by the vulnerability described in GLSA-201701-32 (phpMyAdmin: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in phpMyAdmin. Please review the CVE identifiers referenced below for details. Impact : A authenticated remote attacker could exploit these vulnerabilities to execute arbitrary PHP Code, inject SQL code, or to conduct Cross-Site Scripting attacks. In certain configurations, an unauthenticated remote attacker could cause a Denial of Service condition. Workaround : There is no known workaround at this time. last seen 2020-06-01 modified 2020-06-02 plugin id 96426 published 2017-01-12 reporter This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/96426 title GLSA-201701-32 : phpMyAdmin: Multiple vulnerabilities NASL family SuSE Local Security Checks NASL id OPENSUSE-2016-1027.NASL description This phpMyAdmin update to version 4.4.15.8 fixes the following issues : Security issues fixed : - Improve session cookie code for openid.php and signon.php example files - Full path disclosure in openid.php and signon.php example files - Unsafe generation of BlowfishSecret (when not supplied by the user) - Referrer leak when phpinfo is enabled - Use HTTPS for wiki links - Improve SSL certificate handling - Fix full path disclosure in debugging code - Administrators could trigger SQL injection attack against users - Weaknesses with cookie encryption see PMASA-2016-29 (CVE-2016-6606, CWE-661) - Multiple XSS vulnerabilities see PMASA-2016-30 (CVE-2016-6607, CWE-661) - Multiple XSS vulnerabilities see PMASA-2016-31 (CVE-2016-6608, CWE-661) - PHP code injection see PMASA-2016-32 (CVE-2016-6609, CWE-661) - Full path disclosure see PMASA-2016-33 (CVE-2016-6610, CWE-661) - SQL injection attack see PMASA-2016-34 (CVE-2016-6611, CWE-661) - Local file exposure through LOAD DATA LOCAL INFILE see PMASA-2016-35 (CVE-2016-6612, CWE-661) - Local file exposure through symlinks with UploadDir see PMASA-2016-36 (CVE-2016-6613, CWE-661) - Path traversal with SaveDir and UploadDir see PMASA-2016-37 (CVE-2016-6614, CWE-661) - Multiple XSS vulnerabilities see PMASA-2016-38 (CVE-2016-6615, CWE-661) - SQL injection vulnerability as control user see PMASA-2016-39 (CVE-2016-6616, CWE-661) - SQL injection vulnerability see PMASA-2016-40 (CVE-2016-6617, CWE-661) - Denial-of-service attack through transformation feature see PMASA-2016-41 (CVE-2016-6618, CWE-661) - SQL injection vulnerability as control user see PMASA-2016-42 (CVE-2016-6619, CWE-661) - Verify data before unserializing see PMASA-2016-43 (CVE-2016-6620, CWE-661) - SSRF in setup script see PMASA-2016-44 (CVE-2016-6621, CWE-661) - Denial-of-service attack with $cfg[ last seen 2020-06-05 modified 2016-08-30 plugin id 93214 published 2016-08-30 reporter This script is Copyright (C) 2016-2020 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/93214 title openSUSE Security Update : phpMyAdmin (openSUSE-2016-1027)
References
- http://www.securityfocus.com/bid/94366
- http://www.securityfocus.com/bid/94366
- https://lists.debian.org/debian-lts-announce/2018/07/msg00006.html
- https://lists.debian.org/debian-lts-announce/2018/07/msg00006.html
- https://security.gentoo.org/glsa/201701-32
- https://security.gentoo.org/glsa/201701-32
- https://www.phpmyadmin.net/security/PMASA-2016-37
- https://www.phpmyadmin.net/security/PMASA-2016-37