SB2015061510 - Heap-based buffer overflow in wpa_supplicant

Description

This security bulletin contains information about 1 security vulnerability.

1) Heap-based buffer overflow (CVE-ID: CVE-2015-4141)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in The WPS UPnP function in hostapd, when using WPS AP, and wpa_supplicant, when using WPS external registrar (ER), 0.7.0 through 2.4. A remote attacker can use a negative chunk length to trigger heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Remediation

Cybersecurity Help is not aware of any official remediation provided by the vendor.

References

• http://lists.opensuse.org/opensuse-updates/2015-06/msg00019.html
• http://w1.fi/security/2015-2/wps-upnp-http-chunked-transfer-encoding.txt
• http://www.debian.org/security/2015/dsa-3397
• http://www.openwall.com/lists/oss-security/2015/05/09/4
• http://www.openwall.com/lists/oss-security/2015/05/31/6
• http://www.ubuntu.com/usn/USN-2650-1
• https://security.gentoo.org/glsa/201606-17