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In OSSEC-HIDS 2.7 through 3.5.0, the OS_CleanMSG function in ossec-analysisd doesn't remove or encode terminal control characters or newlines from processed log messages. In many cases, those characters are later logged. Because newlines (\n) are permitted in messages processed by ossec-analysisd, it may be possible to inject nested events into the ossec log. Use of terminal control characters may allow obfuscating events or executing commands when viewed through vulnerable terminal emulators. This may be an unauthenticated remote attack for certain types and origins of logged data.

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Scott R. Shinn OSSEC 输入验证错误漏洞

Scott R. Shinn OSSEC是 （Scott R. Shinn）开源的一个应用软件。提供一个简单，功能强大且开源的解决方案中将HIDS（基于主机的入侵检测），日志监视和SIM,SIEM的所有方面结合在一起。 OSSEC HIDS 2.7版本至3.5.0版本中的ossec-analysisd文件中的‘OS_CleanMSG’函数存在输入验证错误漏洞，该漏洞源于ossec-analysisd的‘OS_CleanMSG’函数未删除或编码终端控制字符或换行符。攻击者可利用该漏洞导致事件混淆或执行命令。

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