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 allows remote attackers to cause a denial of service (crash) via a negative chunk length, which triggers an out-of-bounds read or heap-based buffer overflow.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
| Link | Tags |
|---|---|
| http://www.openwall.com/lists/oss-security/2015/05/31/6 | mailing list |
| http://www.debian.org/security/2015/dsa-3397 | vendor advisory |
| http://w1.fi/security/2015-2/wps-upnp-http-chunked-transfer-encoding.txt | vendor advisory |
| https://security.gentoo.org/glsa/201606-17 | third party advisory vendor advisory |
| http://www.ubuntu.com/usn/USN-2650-1 | vendor advisory |
| http://lists.opensuse.org/opensuse-updates/2015-06/msg00019.html | third party advisory vendor advisory |
| http://www.openwall.com/lists/oss-security/2015/05/09/4 | mailing list |