Format String Vulnerability in Broadcom B43 Wireless Driver - Linux Package
Summary
DEBIAN-CVE-2013-2852: Format string vulnerability in the b43_request_firmware function in drivers/net/wireless/b43/main.c in the Broadcom B43 wireless driver in the Linux kernel through 3.9.4 allows local users to gain privileges by leveragin... Affects linux versions < 3.9.8-1. Fixed in 3.9.8-1. How to fix ↓
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Background
The Linux package is a core component of many operating systems, providing essential functionalities and services. It includes drivers for various hardware components, including the Broadcom B43 wireless driver, which facilitates wireless connectivity. This package is critical for users relying on wireless networking capabilities, and vulnerabilities within it can lead to severe security implications.
Vulnerability Detail
The vulnerability identified as CVE-2013-2852 is a format string vulnerability located in the b43_request_firmware function within the Broadcom B43 wireless driver. This flaw allows local users with root access to exploit format string specifiers in the fwpostfix modprobe parameter. As a result, this can lead to improper error message construction, potentially allowing attackers to gain elevated privileges on the system. The vulnerability affects Linux kernel versions up to 3.9.4, making it crucial for users to address it promptly.
How To Fix
Minimum fixed version
3.9.8-1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade linuxTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary workaround, users can avoid using the fwpostfix modprobe parameter until the package is updated. This will help mitigate the risk of exploitation until a proper fix is applied.
Conclusion
In summary, CVE-2013-2852 is a critical format string vulnerability in the Broadcom B43 wireless driver within the Linux package. Users are advised to update to the patched version 3.9.8-1 to mitigate the risk of exploitation. Until then, temporary workarounds should be employed to safeguard systems.
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FAQ
CVE-2013-2852 is a format string vulnerability in the Broadcom B43 wireless driver that can allow local users to gain elevated privileges.
You can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without any signup.
If exploited, this vulnerability can allow attackers to execute arbitrary code with elevated privileges, potentially compromising the entire system.
Yes, the vulnerability has been patched in version 3.9.8-1 of the Linux package. Users should update to this version or later.
If immediate updates are not possible, refrain from using the fwpostfix modprobe parameter as a temporary workaround.
References
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