CVE-2016-6563: dlink dir-818l\(w\)_firmware Stack-based Buffer Overflow

Vulnerability summary

CVE-2016-6563 is a high (CVSS 10.0) Stack-based Buffer Overflow vulnerability in dlink dir-818l\(w\)_firmware. EPSS estimates a 79.73% chance of exploitation in the next 30 days, higher than 99.6% of scored vulnerabilities. 3 public exploits are recorded.

Timeline

1. 13-07-2018
   PublishedVulnerability first disclosed.
2. 06-08-2024
   Last modifiedVulnerability information updated.

Description

Processing malformed SOAP messages when performing the HNAP Login action causes a buffer overflow in the stack in some D-Link DIR routers. The vulnerable XML fields within the SOAP body are: Action, Username, LoginPassword, and Captcha. The following products are affected: DIR-823, DIR-822, DIR-818L(W), DIR-895L, DIR-890L, DIR-885L, DIR-880L, DIR-868L, and DIR-850L.

• CWE-121Stack-based Buffer OverflowA stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
• CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferThe product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.