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securityvulnsSecurityvulnsSECURITYVULNS:DOC:20701
HistoryOct 14, 2008 - 12:00 a.m.

Marvell Driver Malformed Association Request Vulnerability

2008-10-1400:00:00
vulners.com
6

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
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