ArchLinux: 202005-11: openconnect: arbitrary code execution

    Date23 May 2020
    99
    Posted ByLinuxSecurity Advisories
    The package openconnect before version 1:8.10-1 is vulnerable to arbitrary code execution.
    Arch Linux Security Advisory ASA-202005-11
    ==========================================
    
    Severity: Low
    Date    : 2020-05-19
    CVE-ID  : CVE-2020-12823
    Package : openconnect
    Type    : arbitrary code execution
    Remote  : No
    Link    : https://security.archlinux.org/AVG-1157
    
    Summary
    =======
    
    The package openconnect before version 1:8.10-1 is vulnerable to
    arbitrary code execution.
    
    Resolution
    ==========
    
    Upgrade to 1:8.10-1.
    
    # pacman -Syu "openconnect>=1:8.10-1"
    
    The problem has been fixed upstream in version 8.10.
    
    Workaround
    ==========
    
    None.
    
    Description
    ===========
    
    OpenConnect 8.09 has a buffer overflow in get_cert_name in gnutls.c,
    causing a denial of service (application crash) or possibly unspecified
    other impact, via crafted data in a local certificate.
    
    Impact
    ======
    
    An attacker can cause the application to crash, or possibly execute
    arbitrary code, by tricking a user into using a specially crafted
    certificate.
    
    References
    ==========
    
    https://gitlab.com/openconnect/openconnect/-/merge_requests/108
    https://security.archlinux.org/CVE-2020-12823
    

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