Debian LTS Advisory ([SECURITY] [DLA 1573-1] firmware-nonfree security update)

Published: 2018-11-12 23:00:00
CVE Author: NIST National Vulnerability Database

CVSS Base Vector:

Solution Type:
Vendor Patch

Detection Type:
Linux Distribution Package

Affected Versions:
firmware-nonfree on Debian Linux

For Debian 8 'Jessie', these problems have been fixed in version 20161130-4~deb8u1. This version also adds new firmware and Linux Distribution Packages for use with Linux 4.9, and re-adds firmware-{adi, ralink} as transitional Linux Distribution Packages. We recommend that you upgrade your firmware-nonfree Linux Distribution Packages.

Several vulnerabilities have been discovered in the firmware for Broadcom BCM43xx wifi chips that may lead to a privilege escalation or loss of confidentiality. CVE-2016-0801 Broadgate Team discovered flaws in packet processing in the Broadcom wifi firmware and proprietary drivers that could lead to remote code execution. However, this vulnerability is not believed to affect the drivers used in Debian. CVE-2017-0561 Gal Beniamini of Project Zero discovered a flaw in the TDLS implementation in Broadcom wifi firmware. This could be exploited by an attacker on the same WPA2 network to execute code on the wifi microcontroller. CVE-2017-9417 / #869639 Nitay Artenstein of Exodus Intelligence discovered a flaw in the WMM implementation in Broadcom wifi firmware. This could be exploited by a nearby attacker to execute code on the wifi microcontroller. CVE-2017-13077, CVE-2017-13078, CVE-2017-13079, CVE-2017-13080, CVE-2017-13081 Mathy Vanhoef of the imec-DistriNet research group of KU Leuven discovered multiple vulnerabilities in the WPA protocol used for authentication in wireless networks, dubbed 'KRACK'. An attacker exploiting the vulnerabilities could force the vulnerable system to reuse cryptographic session keys, enabling a range of cryptographic attacks against the ciphers used in WPA1 and WPA2. These vulnerabilities are only being fixed for certain Broadcom wifi chips, and might still be present in firmware for other wifi hardware.

Detection Method:
This check tests the installed software version using the apt Linux Distribution Package manager.

NIST (National Institute of Standards and Technology) NVD (National Vulnerability Database)


CVSS Score
Debian Local Security Checks

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