9.8 CVE-2016-1555

CISA Kev Catalog RCE Path Traversal Used by Malware Patch Exploit

(1) boardData102.php, (2) boardData103.php, (3) boardDataJP.php, (4) boardDataNA.php, and (5) boardDataWW.php in Netgear WN604 before 3.3.3 and WN802Tv2, WNAP210v2, WNAP320, WNDAP350, WNDAP360, and WNDAP660 before 3.5.5.0 allow remote attackers to execute arbitrary commands.
https://nvd.nist.gov/vuln/detail/CVE-2016-1555

References

cret@cert.org Patch Exploit

http://packetstormsecurity.com/files/135956/D-Link-Netgear-FIRMADYNE-Command-... Third Party Advisory VDB Entry
http://seclists.org/fulldisclosure/2016/Feb/112 Mailing List Third Party Advisory
https://kb.netgear.com/30480/CVE-2016-1555-Notification?cid=wmt_netgear_organic Patch Vendor Advisory
https://www.exploit-db.com/exploits/45909/ Exploit Third Party Advisory VDB Entry

CPE

cpe	start	end
Configuration 1
AND
cpe:2.3:o:netgear:wnap320_firmware::::::::		<= 3.0.5.0
Running on/with
cpe:2.3:h:netgear:wnap320:-:::::::*
Configuration 2
AND
cpe:2.3:o:netgear:wndap350_firmware::::::::		<= 3.0.5.0
Running on/with
cpe:2.3:h:netgear:wndap350:-:::::::*
Configuration 3
AND
cpe:2.3:o:netgear:wndap360_firmware::::::::		<= 3.0.5.0
Running on/with
cpe:2.3:h:netgear:wndap360:-:::::::*
Configuration 4
AND
cpe:2.3:o:netgear:wndap210v2_firmware::::::::		<= 3.0.5.0
Running on/with
cpe:2.3:h:netgear:wndap210v2:-:::::::*
Configuration 5
AND
cpe:2.3:o:netgear:wn604_firmware::::::::		<= 3.3.2
Running on/with
cpe:2.3:h:netgear:wn604:-:::::::*
Configuration 6
AND
cpe:2.3:o:netgear:wndap660_firmware::::::::		<= 3.0.5.0
Running on/with
cpe:2.3:h:netgear:wndap660:-:::::::*
Configuration 7
AND
cpe:2.3:o:netgear:wn802tv2_firmware::::::::		<= 3.0.5.0
Running on/with
cpe:2.3:h:netgear:wn802tv2:-:::::::*

REMEDIATION

Patch

Url
https://kb.netgear.com/30480/CVE-2016-1555-Notification?cid=wmt_netgear_organic

EXPLOITS

Exploit-db.com

id	description	date
45909	Netgear Devices - (Unauthenticated) Remote Command Execution (Metasploit)	2018-11-27

POC Github

Url
No known exploits

Other Nist (github, ...)

Url
https://www.exploit-db.com/exploits/45909/

CAPEC

Common Attack Pattern Enumerations and Classifications

id	description	severity
136	LDAP Injection An attacker manipulates or crafts an LDAP query for the purpose of undermining the security of the target. Some applications use user input to create LDAP queries that are processed by an LDAP server. For example, a user might provide their username during authentication and the username might be inserted in an LDAP query during the authentication process. An attacker could use this input to inject additional commands into an LDAP query that could disclose sensitive information. For example, entering a * in the aforementioned query might return information about all users on the system. This attack is very similar to an SQL injection attack in that it manipulates a query to gather additional information or coerce a particular return value. [Survey application] The attacker takes an inventory of the entry points of the application. [Determine user-controllable input susceptible to LDAP injection] For each user-controllable input that the attacker suspects is vulnerable to LDAP injection, attempt to inject characters that have special meaning in LDAP (such as a single quote character, etc.). The goal is to create a LDAP query with an invalid syntax [Try to exploit the LDAP injection vulnerability] After determining that a given input is vulnerable to LDAP Injection, hypothesize what the underlying query looks like. Possibly using a tool, iteratively try to add logic to the query to extract information from the LDAP, or to modify or delete information in the LDAP.	High
15	Command Delimiters An attack of this type exploits a programs' vulnerabilities that allows an attacker's commands to be concatenated onto a legitimate command with the intent of targeting other resources such as the file system or database. The system that uses a filter or denylist input validation, as opposed to allowlist validation is vulnerable to an attacker who predicts delimiters (or combinations of delimiters) not present in the filter or denylist. As with other injection attacks, the attacker uses the command delimiter payload as an entry point to tunnel through the application and activate additional attacks through SQL queries, shell commands, network scanning, and so on. [Assess Target Runtime Environment] In situations where the runtime environment is not implicitly known, the attacker makes connections to the target system and tries to determine the system's runtime environment. Knowing the environment is vital to choosing the correct delimiters. [Survey the Application] The attacker surveys the target application, possibly as a valid and authenticated user [Attempt delimiters in inputs] The attacker systematically attempts variations of delimiters on known inputs, observing the application's response each time. [Use malicious command delimiters] The attacker uses combinations of payload and carefully placed command delimiters to attack the software.	High
183	IMAP/SMTP Command Injection An adversary exploits weaknesses in input validation on web-mail servers to execute commands on the IMAP/SMTP server. Web-mail servers often sit between the Internet and the IMAP or SMTP mail server. User requests are received by the web-mail servers which then query the back-end mail server for the requested information and return this response to the user. In an IMAP/SMTP command injection attack, mail-server commands are embedded in parts of the request sent to the web-mail server. If the web-mail server fails to adequately sanitize these requests, these commands are then sent to the back-end mail server when it is queried by the web-mail server, where the commands are then executed. This attack can be especially dangerous since administrators may assume that the back-end server is protected against direct Internet access and therefore may not secure it adequately against the execution of malicious commands. [Identify Target Web-Mail Server] The adversary first identifies the web-mail server they wish to exploit. [Identify Vulnerable Parameters] Once the adversary has identified a web-mail server, they identify any vulnerable parameters by altering their values in requests. The adversary knows that the parameter is vulnerable if the web-mail server returns an error of any sort. Ideally, the adversary is looking for a descriptive error message. [Determine Level of Injection] After identifying all vulnerable parameters, the adversary determines what level of injection is possible. [Inject IMAP/SMTP Commands] The adversary manipulates the vulnerable parameters to inject an IMAP/SMTP command and execute it on the mail-server.	Medium
248	Command Injection An adversary looking to execute a command of their choosing, injects new items into an existing command thus modifying interpretation away from what was intended. Commands in this context are often standalone strings that are interpreted by a downstream component and cause specific responses. This type of attack is possible when untrusted values are used to build these command strings. Weaknesses in input validation or command construction can enable the attack and lead to successful exploitation.	High
40	Manipulating Writeable Terminal Devices This attack exploits terminal devices that allow themselves to be written to by other users. The attacker sends command strings to the target terminal device hoping that the target user will hit enter and thereby execute the malicious command with their privileges. The attacker can send the results (such as copying /etc/passwd) to a known directory and collect once the attack has succeeded. [Identify attacker-writable terminals] Determine if users TTYs are writable by the attacker. [Execute malicious commands] Using one or more vulnerable TTY, execute commands to achieve various impacts.	Very High
43	Exploiting Multiple Input Interpretation Layers An attacker supplies the target software with input data that contains sequences of special characters designed to bypass input validation logic. This exploit relies on the target making multiples passes over the input data and processing a "layer" of special characters with each pass. In this manner, the attacker can disguise input that would otherwise be rejected as invalid by concealing it with layers of special/escape characters that are stripped off by subsequent processing steps. The goal is to first discover cases where the input validation layer executes before one or more parsing layers. That is, user input may go through the following logic in an application: <parser1> --> <input validator> --> <parser2>. In such cases, the attacker will need to provide input that will pass through the input validator, but after passing through parser2, will be converted into something that the input validator was supposed to stop. [Determine application/system inputs where bypassing input validation is desired] The attacker first needs to determine all of the application's/system's inputs where input validation is being performed and where they want to bypass it. [Determine which character encodings are accepted by the application/system] The attacker then needs to provide various character encodings to the application/system and determine which ones are accepted. The attacker will need to observe the application's/system's response to the encoded data to determine whether the data was interpreted properly. [Combine multiple encodings accepted by the application.] The attacker now combines encodings accepted by the application. The attacker may combine different encodings or apply the same encoding multiple times. [Leverage ability to bypass input validation] Attacker leverages their ability to bypass input validation to gain unauthorized access to system. There are many attacks possible, and a few examples are mentioned here.	High
75	Manipulating Writeable Configuration Files Generally these are manually edited files that are not in the preview of the system administrators, any ability on the attackers' behalf to modify these files, for example in a CVS repository, gives unauthorized access directly to the application, the same as authorized users.	Very High
76	Manipulating Web 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. [Fingerprinting of the operating system] In order to create a valid file injection, the attacker needs to know what the underlying OS is so that the proper file seperator is used. [Survey the Application to Identify User-controllable Inputs] The attacker surveys the target application to identify all user-controllable inputs, possibly as a valid and authenticated user [Vary inputs, looking for malicious results] Depending on whether the application being exploited is a remote or local one, the attacker crafts the appropriate malicious input containing the path of the targeted file or other file system control syntax to be passed to the application [Manipulate files accessible by the application] The attacker may steal information or directly manipulate files (delete, copy, flush, etc.)	Very High

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