Heap-based buffer overflow in Jouni Malinen products - CVE-2015-4141

Vulnerability details

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.

Affected software

How to mitigate CVE-2015-4141

External 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

Related Security Bulletins

• Heap-based buffer overflow in wpa_supplicant
• Heap-based buffer overflow in hostapd (Alpine package)
• Heap-based buffer overflow in wpa_supplicant (Alpine package)
• OpenSUSE Linux update for hostapd
• Gentoo update for hostapd and wpa_supplicant