Friday, June 14, 2024

D-Link Wi-Fi Range Extender Vulnerability Let Attackers Inject Remote Code

A command injection vulnerability has been discovered in the D-Link DAP-X1860 range extender, allowing threat actors to execute remote code on affected devices. The CVE ID for this vulnerability has been given as CVE-2023-45208, and the severity is being analyzed.

This vulnerability exists in the Wi-Fi network scanning functionality, which threat actors can exploit. D-Link has not yet patched this vulnerability, nor did they respond to any comments regarding this issue. 


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A threat actor can create a Wi-Fi network with a crafted SSID within the range of the extender and can execute commands during the setup process. Command injection was also possible when using the network scan function of the range extender.

The extender uses the “GetSiteSurvey” SOAP action to identify nearby networks. If any networks have an apostrophe(‘) on their SSID (for example, `Olaf’s Network`), the setup process crashes repeatedly with a response below.

Error 500: Internal Server Error
CGI program sent malformed HTTP headers: [0   1   *****                **:**:**:**:**:**   WPA2PSK/AES 7        11b/g/n     NONE   In 17       YES      NO
1   1   *****               **:**:**:**:**:** WPA2PSK/AES            24       11b/g/n     NONE   In 13 YES      NO
2   1   *****               **:**:**:**:**:** WPA2PSK/AES            47       11b/g/n/ax  NONE   In 13 YES      NO
3   1   *****               **:**:**:**:**:** WPAPSKWPA2PSK/TKIPAES  81       11b/g/n     NONE   In 7 YES      NO
4   1   *****               **:**:**:**:**:** WPA2PSKWPA3PSK/AES     63       11b/g/n/ax  NONE   In 19 YES      NO
5   1   *****               **:**:**:**:**:** WPA2PSK/AES            44       11b/g/n/ax  NONE   In 5 NO      NO
6   1   Olafs Network **:**:**:**:**:** WPA2PSK/AES 47 11b/g/n/ax NONE In 20 NO NO
sh: 7: not found
Crash response (Source: Redteam-pentesting)

This can be used for performing a denial-of-service attack on the extender. However, arbitrary command execution can be achieved by including commands on the SSID name, like `uname -a`, which results in the command being executed successfully. 

Error 500: Internal Server Error
CGI program sent malformed HTTP headers: [0   1   *****                **:**:**:**:**:**   WPA2PSK/AES 0        11b/g/n     NONE   In 17       YES      NO
1   1   Test
Linux dlink-rp 4.4.198 #3 SMP Mon Jan 11 10:38:51 CST 2021 mips GNU/Linux
sh: **:**:**:**:**:**: not found
sh: 2: not found
sh: 3: not found
sh: 4: not found
sh: 40: not
Successful command injection (Source: Redteam-pentesting)

Red team-pen testing has published a complete report about this vulnerability, which provides detailed information about the Proof-of-concept, Security Risk, Timeline, and disclosure of this vulnerability.

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Eswar is a Cyber security content editor with a passion for creating captivating and informative content. With years of experience under his belt in Cyber Security, he is covering Cyber Security News, technology and other news.

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