The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers). An example of a network attack is an attacker causing a denial of service by sending a specially crafted TCP packet across a wide area network (e.g., CVE-2004-0230).
Attack Complexity
Low
AC
The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Privileges Required
None
PR
The attacker is unauthenticated prior to attack, and therefore does not require any access to settings or files of the vulnerable system to carry out an attack.
Scope
Unchanged
S
An exploited vulnerability can only affect resources managed by the same security authority. In the case of a vulnerability in a virtualized environment, an exploited vulnerability in one guest instance would not affect neighboring guest instances.
Confidentiality
High
C
There is total information disclosure, resulting in all data on the system being revealed to the attacker, or there is a possibility of the attacker gaining control over confidential data.
Integrity
High
I
There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the attacker being able to modify any file on the target system.
Availability
High
A
There is a total shutdown of the affected resource. The attacker can deny access to the system or data, potentially causing significant loss to the organization.
D-Link / Netgear FIRMADYNE Command Injection / Buffer OverflowHello,
Wed like to report several vulnerabilities in embedded devices developed by D-Link and Netgear, which were discovered using our FIRMADYNE framework for emulation and dynamic analysis of Linux-based embedded devices. For more information, refer to our academic paper and open-source release at https://github.com/firmadyne/firmadyne.
Several Netgear devices include unauthenticated webpages that pass form input directly to the command-line, allowing for a command injection attack in `boardData102.php`, `boardData103.php`, `boardDataJP.php`, `boardDataNA.php`, and `boardDataWW.php`. This has been assigned CVE-2016-1555. Affected devices include:
Netgear WN604
Netgear WN802Tv2
Netgear WNAP210
Netgear WNAP320
Netgear WNDAP350
Netgear WNDAP360
Several D-Link devices include a web server that is vulnerable to a buffer overflow while parsing the 'dlink_uid' cookie. The length of the value set in the cookie is obtained using strlen(), which is then passed to memcpy(), and the value is copied into a fixed-size buffer. This has been assigned CVE-2016-1558. Affected devices include:
D-Link DAP-2310
D-Link DAP-2330
D-Link DAP-2360
D-Link DAP-2553
D-Link DAP-2660
D-Link DAP-2690
D-Link DAP-2695
Several Netgear devices include unauthenticated webpages that disclose the wireless WPS PIN, allowing for information disclosure. This has been assigned CVE-2016-1556. Affected devices include:
Netgear WN604
Netgear WNAP210
Netgear WNAP320
Netgear WND930
Netgear WNDAP350
Netgear WNDAP360
Several devices by both D-Link and Netgear disclose wireless passwords and administrative usernames/passwords over SNMP, including OIDs iso.3.6.1.4.1.171.10.37.35.2.1.3.3.2.1.1.4, iso.3.6.1.4.1.171.10.37.38.2.1.3.3.2.1.1.4, iso.3.6.1.4.1.171.10.37.35.4.1.1.1, iso.3.6.1.4.1.171.10.37.37.4.1.1.1, iso.3.6.1.4.1.171.10.37.38.4.1.1.1, iso.3.6.1.4.1.4526.100.7.8.1.5, iso.3.6.1.4.1.4526.100.7.9.1.5, iso.3.6.1.4.1.4526.100.7.9.1.7, and iso.3.6.1.4.1.4526.100.7.10.1.7. This has been assigned CVE-2016-1557 for Netgear devices, and CVE-2016-1559 for D-Link devices. Affected devices include:
D-Link DAP-1353
D-Link DAP-2553
D-Link DAP-3520
Netgear WNAP320
Netgear WNDAP350
Netgear WNDAP360
We have not heard back from D-Link after contacting the vendor. Netgear will fix WN604 with firmware 3.3.3 by late February, but the tentative ETA for the remaining devices is mid-March.
Thanks,
Dominic
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