Buffer Overflow in be_get_module_eeprom in Kernel
Summary
GSD-2022-1004774: be2net: Fix buffer overflow in be_get_module_eeprom. Affects Kernel versions >= e36edd9d26cf257511548edaf2b7a56eb4fed854, < 8ff4f9df73e5c551a72ee6034886c17e8de6596d. No fix is published. How to fix ↓
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Background
The Kernel is a critical component of the Linux operating system that manages system resources and facilitates communication between hardware and software. It provides essential functionality for the proper functioning of the system. The be2net driver in the Kernel is responsible for managing network interfaces using the Emulex OneConnect 10GbE Ethernet Controller. This driver allows the system to communicate with the network hardware and handle network traffic. However, a buffer overflow vulnerability has been discovered in the be_get_module_eeprom function of the be2net driver.
Vulnerability Detail
The buffer overflow vulnerability in the be_get_module_eeprom function of the be2net driver allows an attacker to overwrite adjacent memory locations, potentially leading to arbitrary code execution or a system crash. This vulnerability can be exploited by sending specially crafted network packets to a vulnerable system. If successfully exploited, an attacker could gain unauthorized access to the system or cause a denial of service. The vulnerability was introduced in version v3.18 of the Kernel and has been fixed in version v4.19.254.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
If updating the Kernel is not immediately feasible, a temporary workaround is to disable the affected network interface or block network traffic to the vulnerable system. This can help mitigate the risk of exploitation until the Kernel update can be applied. The following commands can be used to disable the network interface:
ifconfig <interface_name> down
Conclusion
The buffer overflow vulnerability in the be_get_module_eeprom function of the be2net driver in the Kernel can pose a significant security risk to affected systems. It is crucial to apply the necessary updates and security measures to mitigate the risk of exploitation. For further support and assistance in addressing this vulnerability, please contact DevNack.com.
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FAQ
If successfully exploited, this vulnerability can allow an attacker to execute arbitrary code or cause a denial of service. It could potentially lead to unauthorized access to the system and compromise sensitive data.
You can use the Vulert 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 known vulnerabilities, including this buffer overflow issue.
At the time of this report, there are no known public exploits for this vulnerability. However, it is important to apply the necessary updates and take appropriate security measures to protect against potential exploitation.
All systems running the affected versions of the Kernel with the be2net driver enabled are potentially vulnerable. However, systems exposed to untrusted network traffic are at a higher risk of exploitation.
For more details about this vulnerability, including the specific code changes and commits that address it, you can refer to the vulnerability database entry at https://github.com/cloudsecurityalliance/gsd-database/blob/main/2022/1004xxx/GSD-2022-1004774.json.
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