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    ArchLinux: 202102-25: wpa_supplicant: arbitrary code execution

    Date 22 Feb 2021
    52
    Posted By LinuxSecurity Advisories
    The package wpa_supplicant before version 2:2.9-8 is vulnerable to arbitrary code execution.
    Arch Linux Security Advisory ASA-202102-25
    ==========================================
    
    Severity: High
    Date    : 2021-02-12
    CVE-ID  : CVE-2021-0326
    Package : wpa_supplicant
    Type    : arbitrary code execution
    Remote  : Yes
    Link    : https://security.archlinux.org/AVG-1530
    
    Summary
    =======
    
    The package wpa_supplicant before version 2:2.9-8 is vulnerable to
    arbitrary code execution.
    
    Resolution
    ==========
    
    Upgrade to 2:2.9-8.
    
    # pacman -Syu "wpa_supplicant>=2:2.9-8"
    
    The problem has been fixed upstream but no release is available yet.
    
    Workaround
    ==========
    
    The issue can be mitigated by disabling P2P, using the control
    interface command "P2P_SET disabled 1" or "p2p_disabled=1" in (each, if
    multiple interfaces used) wpa_supplicant configuration file.
    
    Description
    ===========
    
    A security issue was found in hostapd and wpa_supplicant version 2.9. A
    missing length check in the p2p_copy_client_info function could lead to
    a buffer overflow.
    
    Impact
    ======
    
    An attacker within radio range of the device running P2P discovery
    might be able to cause a crash or execute arbitrary code.
    
    References
    ==========
    
    https://bugs.archlinux.org/task/69525
    https://w1.fi/security/2020-2/wpa_supplicant-p2p-group-info-processing-vulnerability.txt
    https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=27269
    https://w1.fi/cgit/hostap/commit/?id=947272febe24a8f0ea828b5b2f35f13c3821901e
    https://security.archlinux.org/CVE-2021-0326
    

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