SB2019060533 - Improper Authentication in hostapd (Alpine package)
Published: June 5, 2019
Security Bulletin ID
SB2019060533
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper Authentication (CVE-ID: CVE-2019-9496)
The vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to missing state validation steps when processing the
SAE confirm message when in hostapd/AP mode. A remote attacker can bypass authentication process, force the hostapd process to terminate and perform a denial of service (DoS) attack on the target system.
Remediation
Install update from vendor's website.
References
- https://git.alpinelinux.org/aports/commit/?id=f1fd2a573425793de610a615092f210f1c50f0ad
- https://git.alpinelinux.org/aports/commit/?id=031621e2cf39f9441cb620e4ebfb5261276e7978
- https://git.alpinelinux.org/aports/commit/?id=091dec18c2b06659b1b4778559ab25cd06829630
- https://git.alpinelinux.org/aports/commit/?id=15604368388fdc2804ed11c919a38b25b4201ca9
- https://git.alpinelinux.org/aports/commit/?id=4c63d15964419d85bba90df9bfeb8f6af833b40b
- https://git.alpinelinux.org/aports/commit/?id=980e2263332f78779379c51e24efb6180ed7d4a3
- https://git.alpinelinux.org/aports/commit/?id=904e2d699295d64fe5097fc46a9c6719fe26dc7a