CVE-2023-45579: Buffer Overflow Vulnerability in D-Link Devices

A new vulnerability has been discovered in several D-Link devices, which could allow an attacker to execute arbitrary code remotely. This vulnerability has been assigned CVE-2023-45579 and is classified as a buffer overflow vulnerability. This post will cover the technical details of the vulnerability, how it can be exploited, and will also provide links to the original references.

Details of the Vulnerability

This vulnerability occurs due to improper handling of user-supplied input within the ip/type parameter of the jingx.asp function. Specifically, the affected devices do not properly sanitize the user-supplied input, leading to a buffer overflow condition.

Exploit Details

An attacker can exploit this vulnerability by sending a specially crafted HTTP request to the affected device. The crafted request should contain a malicious payload in the ip/type parameter of the jingx.asp function. Here is an example of a crafted request:

GET /jingx.asp?ip/type=AAA...AAA (Long string of A's followed by the exploit payload)

The payload itself should be designed to overwrite the return address in the stack and execute arbitrary code. The code may vary depending on the specific model and firmware version of the affected D-Link device.

Mitigation

To mitigate this vulnerability, D-Link has released updated firmware versions for the affected devices. Users are encouraged to update their device firmware to the latest version to protect themselves from potential exploitation. Additionally, users should restrict access to their devices by configuring strong access controls and network filtering.

Original References

1. CVE Details: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-45579
2. D-Link Security Advisory: https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10174
3. NIST Vulnerability Database: https://nvd.nist.gov/vuln/detail/CVE-2023-45579

Conclusion

The CVE-2023-45579 buffer overflow vulnerability in D-Link devices presents a significant security risk to users who have not applied the necessary firmware updates. By exploiting this vulnerability, a remote attacker can execute arbitrary code on the device. Therefore, it is crucial to keep your devices updated with the latest firmware versions and implement strong access controls to prevent unauthorized access.

Timeline

Published on: 10/16/2023 07:15:09 UTC
Last modified on: 10/19/2023 17:36:17 UTC