SB2015111002 - Denial of service in wpa_supplicant
Published: November 10, 2015 Updated: March 26, 2018
Security Bulletin ID
SB2015111002
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
2
Exploitation vector
Remote access
Highest impact
Partial DoS
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 vulnerabilities.
1) NULL pointer dereference (CVE-ID: CVE-2015-5316)
CWE-ID: CWE-476 - NULL Pointer Dereference
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote unauthenticated attacker to cause DoS condition on the target system.
The weakness exists in the eap_pwd_perform_confirm_exchangefunction due to NULL pointer dereference. A remote attacker can submit an EAP-pwd Confirm message prior to the Identity exchange and cause the service to crash.
2) Buffer access with incorrect length value (CVE-ID: CVE-2015-5315)
CWE-ID: CWE-805 - Buffer Access with Incorrect Length Value
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote unauthenticated attacker to cause DoS condition on the target system.
The weakness exists in the eap_pwd_process function due to missing last fragment length validation. A remote attacker can submit a large buffer fragment in an EAP-pwd message and cause the service to crash.
Remediation
Install update from vendor's website.