CVE-2020-15892

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Summary

CVECVE-2020-15892
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2020-07-22 19:15:00 UTC
Updated2023-11-08 22:49:00 UTC
DescriptionAn issue was discovered in apply.cgi on D-Link DAP-1520 devices before 1.10b04Beta02. Whenever a user performs a login action from the web interface, the request values are being forwarded to the ssi binary. On the login page, the web interface restricts the password input field to a fixed length of 15 characters. The problem is that validation is being done on the client side, hence it can be bypassed. When an attacker manages to intercept the login request (POST based) and tampers with the vulnerable parameter (log_pass), to a larger length, the request will be forwarded to the webserver. This results in a stack-based buffer overflow. A few other POST variables, (transferred as part of the login request) are also vulnerable: html_response_page and log_user.

Risk And Classification

Problem Types: CWE-787 | CWE-669

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Hardware D-link Dap-1520 a1 All All All
Hardware D-link Dap-1520 a1 All All All
Operating System D-link Dap-1520 Firmware All All All All
Hardware Dlink Dap-1520 a1 All All All
Operating System Dlink Dap-1520 Firmware All All All All

References

ReferenceSourceLinkTags
D-Link Technical Support MISC supportannouncement.us.dlink.com Patch, Vendor Advisory
CVE-2020-15892:Classic Stack Based Buffer Overflow in D-LINK Firmware DAP 1520 - Loginsoft Research MISC research.loginsoft.com Exploit, 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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