CVE-2012-10021: A stack-based buffer overflow vulnerability exists in D-Link DIR-605L Wireless N300 Cloud Router firmware versions 1.12 and 1.13 via the getAuthCode()…

PriorityP178critical9.8CVSS 3.1

AVNACLPRNUINSUCHIHAH

EXPLOIT

EPSS

3.09%

86.2th percentile

A stack-based buffer overflow vulnerability exists in D-Link DIR-605L Wireless N300 Cloud Router firmware versions 1.12 and 1.13 via the getAuthCode() function. The flaw arises from unsafe usage of sprintf() when processing user-supplied CAPTCHA data via the FILECODE parameter in /goform/formLogin. A remote unauthenticated attacker can exploit this to execute arbitrary code with root privileges on the device.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
d-link	dir-605l	1.12 – 1.13	—
dlink	dir-605l_firmware	1.12 – 1.13	—

Detection & IOCsextracted from sources · hover to see the quote

path/goform/formLogin↗

otherFILECODE↗

versionD-Link DIR-605L firmware 1.12↗

versionD-Link DIR-605L firmware 1.13↗

→Monitor HTTP POST requests to /goform/formLogin containing an oversized or anomalous FILECODE parameter, which is the attack vector for the stack-based buffer overflow via getAuthCode(). ↗
→Flag unauthenticated remote requests targeting /goform/formLogin on D-Link DIR-605L devices running firmware 1.12 or 1.13, as exploitation requires no credentials. ↗
→A public Metasploit module exists for this vulnerability (exploits/linux/http/dlink_dir605l_captcha_bof), meaning exploitation attempts may carry Metasploit-characteristic payloads or staging patterns. ↗

·Exploitation has only been confirmed on firmware versions 1.12 and 1.13; applicability to other firmware versions is unverified. ↗
·The Metasploit module was validated against an emulated environment for firmware 1.13; real-hardware behavior may differ slightly from emulation. ↗

CVSS provenance

nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvdv4.09.3CRITICALCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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