SB2020090377 - Permissions, Privileges, and Access Controls in busybox (Alpine package)
Published: September 3, 2020
Security Bulletin ID
SB2020090377
Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2019-9499)
The vulnerability allows a remote attacker to escalate privileges on the system.
The vulnerability exists due to the implementations of EAP-PWD in wpa_supplicant EAP Peer, when built against a crypto library missing explicit validation on imported elements, do not validate the scalar and element values in EAP-pwd-Commit. A remote attacker can complete authentication, session key and control of the data connection with a client.
This vulnerability affects the following products:
- hostapd with SAE support and wpa_supplicant with SAE support prior to and including version 2.4
- hostapd with EAP-pwd support and wpa_supplicant with EAP-pwd support prior to and including version 2.7
Remediation
Install update from vendor's website.