Title: ------ * Marvell Driver Malformed Association Request Vulnerability Summary: -------- * The wireless drivers in some Wi-Fi access points (such as the MARVELL-based Linksys WAP4400N) do not correctly parse some malformed 802.11 frames. Assigned CVE: ------------- * CVE-2008-4441 Details: -------- * The bug can be triggered thanks to a malformed association request which is typically too short (truncated). Any association request sent in the air by the attacker will be parsed by the access point wireless driver and thus may trigger some implementation bugs. This bug is only triggerable when the access point is in WEP mode and if the association request contains the WEP flag. Attack Impact: -------------- * Denial-of-service (reboot or hang-up) and possibly remote arbitrary code execution Attack Vector: -------------- * Unauthenticated wireless device Timeline: --------- * 2008-05-26 - Vulnerability reported to Linksys * 2008-05-26 - Full details sent to Linksys * 2008-10-13 - Public disclosure Affected Products: ------------------ * Linksys WAP4400N (firmware v1.2.14) with MARVELL 88W8361P-BEM1 chipset Vulnerable Devices: ------------------- * As it is a wireless driver specific issue, the wireless vendor should use the latest chipset wireless driver for their access point firmwares. This security vulnerability was reported to Linksys, updated firmwares (such as the 1.2.17 firmware) should be available on their web site. Any other wireless device relying on this vulnerable wireless driver is likely to be vulnerable. Credits: -------- * This vulnerability was discovered by Laurent Butti and Julien Tinnes from France Telecom / Orange