Title: ------ * Marvell Driver Multiple Information Element Overflows Summary: -------- * The wireless drivers in some Wi-Fi access points (such as the MARVELL-based Linksys WAP4400N) do not correctly parse information elements included in association requests. Most information elements are used by the wireless access point and clients to advertise their capabilities (regarding rates, network name, cryptographic capabilities...). Assigned CVE: ------------- * CVE-2007-5475 Details: -------- * The bug can be triggered by a malicious association request to the wireless access point (the information element could be a rates, extended rates, or any supported information element that will be parsed by the flawed parser, the information element uses an inappropriate length, typically too long). This can be achieved only after a successful 802.11 authentication (in "Open" or "Shared" mode according to the configuration of the wireless access point). Attack Impact: -------------- * Denial-of-service (reboot or hang-up) and possibly remote arbitrary code execution Attack Vector: -------------- * Unauthenticated wireless device Timeline: --------- * 2007-10-22 - Vulnerability reported to Linksys * 2007-10-23 - Full details sent to Linksys * 2009-09-10 - Cisco/Linksys released a patched firmware (1.2.19) * 2009-11-10 - Release of this security advisory Affected Products: ------------------ * Linksys WAP4400N (firmware 1.2.17) 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 originally reported to Linksys, updated firmwares should be available on Cisco/Linksys 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 from France Telecom / Orange