Directory Traversal with ../ sequences occurs in AccountsService before 0.6.50 because of an insufficient path check in userchangeiconfileauthorized_cb() in user.c.
{
    "binaries": [
        {
            "binary_name": "accountsservice",
            "binary_version": "0.6.35-0ubuntu7.3+esm2"
        },
        {
            "binary_name": "gir1.2-accountsservice-1.0",
            "binary_version": "0.6.35-0ubuntu7.3+esm2"
        },
        {
            "binary_name": "libaccountsservice-dev",
            "binary_version": "0.6.35-0ubuntu7.3+esm2"
        },
        {
            "binary_name": "libaccountsservice0",
            "binary_version": "0.6.35-0ubuntu7.3+esm2"
        },
        {
            "binary_name": "libpam-pin",
            "binary_version": "0.6.35-0ubuntu7.3+esm2"
        }
    ],
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}
          {
    "binaries": [
        {
            "binary_name": "accountsservice",
            "binary_version": "0.6.40-2ubuntu11.6"
        },
        {
            "binary_name": "gir1.2-accountsservice-1.0",
            "binary_version": "0.6.40-2ubuntu11.6"
        },
        {
            "binary_name": "libaccountsservice-dev",
            "binary_version": "0.6.40-2ubuntu11.6"
        },
        {
            "binary_name": "libaccountsservice0",
            "binary_version": "0.6.40-2ubuntu11.6"
        }
    ],
    "availability": "No subscription required"
}
          {
    "binaries": [
        {
            "binary_name": "accountsservice",
            "binary_version": "0.6.45-1ubuntu1.3"
        },
        {
            "binary_name": "gir1.2-accountsservice-1.0",
            "binary_version": "0.6.45-1ubuntu1.3"
        },
        {
            "binary_name": "libaccountsservice-dev",
            "binary_version": "0.6.45-1ubuntu1.3"
        },
        {
            "binary_name": "libaccountsservice0",
            "binary_version": "0.6.45-1ubuntu1.3"
        }
    ],
    "availability": "No subscription required"
}