SB2016053013 - Denial of service in hostapd (Alpine package)
Published: May 30, 2016
Security Bulletin ID
SB2016053013
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Denial of service (CVE-ID: CVE-2016-4476)
The vulnerability allows a remote unauthenticated user to cause DoS conditions on the target system.The weakness is due to improper writing of configuration file update for the WPA/WPA2 passphrase parameter. If the parameter is updated through a WPS operation or local configuration, the resulting configuration file leads to interruption of the hostapd and wpa supplicant functionality.
Successful exploitation of the vulnerability results in denial of service on the vulnerable system.
Remediation
Install update from vendor's website.
References
- https://git.alpinelinux.org/aports/commit/?id=ca078d6aac05d0fb304ddb80568e15359fec83db
- https://git.alpinelinux.org/aports/commit/?id=6accf4596e89dcb7b86120055f9bdbf781b15bc0
- https://git.alpinelinux.org/aports/commit/?id=3aeb57ec96caa3b0c85bc950e5fd36f43bcd48fe
- https://git.alpinelinux.org/aports/commit/?id=a2dcdd15792e8717e6b73abca56c08bd165e93ab
- https://git.alpinelinux.org/aports/commit/?id=b4524773c4a5e380611753a5beca87c6791538c8