Buffer Overflow Vulnerability in wl1251_cmd_scan
Summary
GSD-2021-1001429: wl1251: Fix possible buffer overflow in wl1251_cmd_scan. Affects Kernel versions < 0f6c0488368c9ac1aa685821916fadba32f5d1ef. No fix is published. How to fix ↓
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Background
The wl1251 package is a wireless LAN driver for Texas Instruments wl1251 chipset. It is used in Linux Kernel and provides functionality for wireless communication. The package is responsible for handling scan commands, which allow the device to search for available wireless networks. However, a buffer overflow vulnerability has been discovered in the wl1251_cmd_scan function, which could potentially be exploited by an attacker.
Vulnerability Detail
The vulnerability in wl1251_cmd_scan function arises from a possible buffer overflow. This occurs when the function does not properly validate the length of user-supplied input before copying it into a fixed-size buffer. An attacker could craft a malicious scan command with excessive data, causing a buffer overflow and potentially overwriting adjacent memory. This could lead to arbitrary code execution, denial of service, or other security compromises.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a workaround, users can apply the patch manually to their existing Kernel version. The patch can be obtained from the commit 0f6c0488368c9ac1aa685821916fadba32f5d1ef. By applying the patch, the vulnerable code will be modified to prevent the buffer overflow vulnerability.
Conclusion
In conclusion, the wl1251 package in the Linux Kernel is vulnerable to a buffer overflow in the wl1251_cmd_scan function. This vulnerability can be mitigated by updating the Kernel to version v4.14.240 or later. Alternatively, users can apply the provided patch manually. It is important to take action to protect systems from potential exploits. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The buffer overflow vulnerability in wl1251_cmd_scan could potentially allow an attacker to execute arbitrary code, cause a denial of service, or compromise the security of the system.
You can use Vulert's playground at Vulert Scanner to check if your system is affected by this vulnerability. Simply upload your package-lock.json file and Vulert will analyze it for any open-source vulnerabilities, including this one.
At the time of this report, no known exploits for this vulnerability have been reported. However, it is important to apply the fix or workaround as soon as possible to mitigate any potential risks.
Yes, this vulnerability can be exploited remotely if the affected system is accessible over the network. An attacker could send a specially crafted scan command to trigger the buffer overflow and potentially execute arbitrary code on the target system.
The recommended solution is to update the Linux Kernel to the patched version. However, if updating is not feasible, implementing strong network security measures, such as firewalls and intrusion detection systems, can help reduce the risk of exploitation.
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