CVE-2017-8416 Memory corruption in n/a
Unauthenticated remote attackers can execute arbitrary code on D-Link cameras via a stack buffer overflow in the UDP discovery daemon.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2017-8416?
CVE-2017-8416 is a high-severity memory corruption vulnerability in n/a, published on 2 Jul 2019. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An issue was discovered on D-Link DCS-1100 and DCS-1130 devices. The device runs a custom daemon on UDP port 5978 which is called "dldps2121" and listens for broadcast packets sent on 255.255.255.255. This daemon handles custom D-Link UDP based protocol that allows D-Link mobile applications and desktop applications to discover D-Link devices on the local network. The binary processes the received UDP packets sent from any device in "main" function. One path in the function traverses towards a block of code that processing of packets which does an unbounded copy operation which allows to overflow the buffer. The custom protocol created by Dlink follows the following pattern: Packetlen, Type of packet; M=MAC address of device or broadcast; D=Device Type;C=base64 encoded command string;test=1111 We can see at address function starting at address 0x0000DBF8 handles the entire UDP packet and performs an insecure copy using strcpy function at address 0x0000DC88. This results in overflowing the stack pointer after 1060 characters and thus allows to control the PC register and results in code execution. The same form of communication can be initiated by any process including an attacker process on the mobile phone or the desktop and this allows a third-party application on the device to execute commands on the device without any authentication by sending just 1 UDP packet with custom base64 encoding.
Weakness: CWE-119
Which versions are affected by CVE-2017-8416?
It affects 2 products.
Products include Dlink Dcs-1100 Firmware, Dlink Dcs-1130 Firmware.
How do I fix CVE-2017-8416?
No fix has been published for CVE-2017-8416 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2017-8416 being exploited?
There is no known exploitation of CVE-2017-8416 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-6vwv-j2qw-r62r.