ArchLinux: 201904-2: gnutls: multiple issues

    Date11 Apr 2019
    CategoryArchLinux
    591
    Posted ByLinuxSecurity Advisories
    The package gnutls before version 3.6.7-1 is vulnerable to multiple issues including arbitrary code execution and denial of service.
    Arch Linux Security Advisory ASA-201904-2
    =========================================
    
    Severity: Critical
    Date    : 2019-04-05
    CVE-ID  : CVE-2019-3829 CVE-2019-3836
    Package : gnutls
    Type    : multiple issues
    Remote  : Yes
    Link    : https://security.archlinux.org/AVG-945
    
    Summary
    =======
    
    The package gnutls before version 3.6.7-1 is vulnerable to multiple
    issues including arbitrary code execution and denial of service.
    
    Resolution
    ==========
    
    Upgrade to 3.6.7-1.
    
    # pacman -Syu "gnutls>=3.6.7-1"
    
    The problems have been fixed upstream in version 3.6.7.
    
    Workaround
    ==========
    
    None.
    
    Description
    ===========
    
    - CVE-2019-3829 (arbitrary code execution)
    
    A critical memory corruption vulnerability has been found in GnuTLS
    versions prior to 3.6.7, in any API backed by verify_crt(), including
    gnutls_x509_trust_list_verify_crt() and related routines. Any client or
    server that verifies X.509 certificates with GnuTLS is likely affected
    and can be compromised by a malicious server or active network
    attacker.
    
    - CVE-2019-3836 (denial of service)
    
    An invalid pointer access via malformed TLS1.3 async messages has been
    found in GnuTLS versions prior to 3.6.7.
    
    Impact
    ======
    
    A remote attacker can execute arbitrary code on a client or server
    validating certificates.
    
    References
    ==========
    
    https://lists.gnupg.org/pipermail/gnutls-help/2019-March/004497.html
    https://gitlab.com/gnutls/gnutls/issues/694
    https://gitlab.com/gnutls/gnutls/issues/704
    https://security.archlinux.org/CVE-2019-3829
    https://security.archlinux.org/CVE-2019-3836
    
    
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