An issue was discovered on D-Link DCS-1100 and DCS-1130 devices. The device has a custom binary called mp4ts under the /var/www/video folder. It seems that this binary dumps the HTTP VERB in the system logs. As a part of doing that it retrieves the HTTP VERB sent by the user and uses a vulnerable sprintf function at address 0x0000C3D4 in the function sub_C210 to copy the value into a string and then into a log file. Since there is no bounds check being performed on the environment variable at address 0x0000C360 this results in a stack overflow and overwrites the PC register allowing an attacker to execute buffer overflow or even a command injection attack.
2019-07-02T21:15:10.103
2024-11-21T03:33:59.320
Modified
CVSSv3.1: 8.8 (HIGH)
AV:A/AC:L/Au:N/C:P/I:P/A:P
6.5
6.4
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Operating System | dlink | dcs-1130_firmware | - | Yes |
| Hardware | dlink | dcs-1130 | - | No |
| Operating System | dlink | dcs-1100_firmware | - | Yes |
| Hardware | dlink | dcs-1100 | - | No |