CVE-2017-8416

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Summary

CVECVE-2017-8416
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2019-07-02 21:15:00 UTC
Updated2021-04-23 16:49:00 UTC
DescriptionAn 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.

Risk And Classification

Problem Types: CWE-119

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Hardware Dlink Dcs-1100 - All All All
Hardware Dlink Dcs-1100 - All All All
Operating System Dlink Dcs-1100 Firmware - All All All
Operating System Dlink Dcs-1100 Firmware - All All All
Hardware Dlink Dcs-1130 - All All All
Hardware Dlink Dcs-1130 - All All All
Operating System Dlink Dcs-1130 Firmware - All All All
Operating System Dlink Dcs-1130 Firmware - All All All

References

ReferenceSourceLinkTags
IoT_vulnerabilities/Dlink_DCS_1130_security.pdf at master · ethanhunnt/IoT_vulnerabilities · GitHub MISC github.com Not Applicable, Third Party Advisory
Dlink DCS-1130 Command Injection / CSRF / Stack Overflow ≈ Packet Storm MISC packetstormsecurity.com Third Party Advisory, VDB Entry
Bugtraq: Newly releases IoT security issues BUGTRAQ seclists.org Mailing List, Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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