SB2017101603 - Ubuntu update for wpa_supplicant and hostapd
Published: October 16, 2017
Security Bulletin ID
SB2017101603
Severity
High
Patch available
YES
Number of vulnerabilities
11
Exploitation vector
Adjecent network
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 11 secuirty vulnerabilities.
1) Key management errors (CVE-ID: CVE-2017-13077)
The vulnerability allows an adjacent attacker to force a supplicant to reinstall a previously used pairwise key.The weakness exists in the processing of the 802.11i 4-way handshake messages of the WPA and WPA2 protocols due to ambiguities in the processing of associated protocol messages. An adjacent attacker can use man-in-the-middle techniques to retransmit previously used message exchanges between supplicant and authenticator.
2) Key management errors (CVE-ID: CVE-2017-13078)
The vulnerability allows an adjacent attacker to force a supplicant to reinstall a previously used group key.The weakness exists in the processing of the 802.11i 4-way handshake messages of the WPA and WPA2 protocols due to ambiguities in the processing of associated protocol messages. An adjacent attacker can use man-in-the-middle techniques to retransmit previously used message exchanges between supplicant and authenticator.
3) Key management errors (CVE-ID: CVE-2017-13079)
The vulnerability allows an adjacent attacker to force a supplicant to reinstall a previously used integrity group key.The weakness exists in the processing of the 802.11i 4-way handshake messages of the WPA and WPA2 protocols due to ambiguities in the processing of associated protocol messages. An adjacent attacker can use man-in-the-middle techniques to retransmit previously used message exchanges between supplicant and authenticator.
4) Key management errors (CVE-ID: CVE-2017-13080)
The vulnerability allows an adjacent attacker to force a supplicant to reinstall a previously used group key.The weakness exists in the processing of the 802.11i 4-way handshake messages of the WPA and WPA2 protocols due to ambiguities in the processing of associated protocol messages. An adjacent attacker can use man-in-the-middle techniques to retransmit previously used message exchanges between supplicant and authenticator.
The vulnerability is dubbed "KRACK" attack.
5) Key management errors (CVE-ID: CVE-2017-13081)
The vulnerability allows an adjacent attacker to force a supplicant to reinstall a previously used integrity group key.The weakness exists in the processing of the 802.11i 4-way handshake messages of the WPA and WPA2 protocols due to ambiguities in the processing of associated protocol messages. An adjacent attacker can use man-in-the-middle techniques to retransmit previously used message exchanges between supplicant and authenticator.
6) Key management errors (CVE-ID: CVE-2017-13082)
The vulnerability allows an adjacent attacker to force a supplicant to reinstall a previously used pairwise key.The weakness exists in the processing of the 802.11i 4-way handshake messages of the WPA and WPA2 protocols due to ambiguities in the processing of associated protocol messages. An adjacent attacker can use man-in-the-middle techniques to retransmit previously used message exchanges between supplicant and authenticator.
7) Key management errors (CVE-ID: CVE-2017-13086)
The vulnerability allows an adjacent attacker to force a supplicant that is compliant with the 802.11z standard to reinstall a previously used TPK key.The weakness exists in the processing of the 802.11z (Extensions to Direct-Link Setup) TDLS handshake messages due to ambiguities in the processing of associated protocol messages. An adjacent attacker can passively eavesdrop on a TDLS handshake and retransmit previously used message exchanges between supplicant and authenticator.
8) Key management errors (CVE-ID: CVE-2017-13087)
The vulnerability allows an adjacent attacker to force a supplicant that is compliant with the 802.11v standard to reinstall a previously used group key.The weakness exists in the processing of the 802.11v (Wireless Network Management) Sleep Mode Response frames due to ambiguities in the processing of associated protocol messages. An adjacent attacker can passively eavesdrop and retransmit previously used WNM Sleep Mode Response frames.
9) Key management errors (CVE-ID: CVE-2017-13088)
The vulnerability allows an adjacent attacker to force a supplicant that is compliant with the 802.11v standard to reinstall a previously used integrity group key.The weakness exists in the processing of the 802.11v (Wireless Network Management) Sleep Mode Response frames due to ambiguities in the processing of associated protocol messages. An adjacent attacker can passively eavesdrop and retransmit previously used WNM Sleep Mode Response frames.
10) 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.
11) Privilege Escalation (CVE-ID: CVE-2016-4477)
The vulnerability allows a local user to gain elevated privileges on the target system.The weakness exists due to access control error. Updating of the local configuration through the control interface
SET_NETWORK command lets attackers to run code from a localy strored library file under the same privileges as the wpa _supplicant process has.
Successful exploitation of the vulnerability results in privilege escalation on the vulnerable system.
Remediation
Install update from vendor's website.