CVE-2017-20201— CCleaner和CCleaner Cloud 安全漏洞

CCleaner v5.33.6162 & CCleaner Cloud v1.07.3191 Malicious Backdoor Supply Chain Compromise

CCleaner v5.33.6162 and CCleaner Cloud v1.07.3191 (32-bit builds) contained a malicious pre-entry-point loader that diverts execution from __scrt_common_main_seh into a custom loader. That loader decodes an embedded blob into shellcode, allocates executable heap memory, resolves Windows API functions at runtime, and transfers execution to an in-memory payload. The payload performs anti-analysis checks, gathers host telemetry, encodes the data with a two-stage obfuscation, and attempts HTTPS exfiltration to hard-coded C2 servers or month-based DGA domains. Potential impacts include remote data collection and exfiltration, stealthy in-memory execution and persistence, and potential lateral movement. CCleaner was developed by Piriform, which was acquired by Avast in July 2017; Avast later merged with NortonLifeLock to form the parent company now known as Gen Digital. According to vendor advisories, the compromised CCleaner build was released on August 15, 2017 and remediated on September 12, 2017 with v5.34; the compromised CCleaner Cloud build was released on August 24, 2017 and remediated on September 15, 2017 with v1.07.3214.

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内嵌的恶意代码

CCleaner和CCleaner Cloud 安全漏洞

CCleaner和CCleaner Cloud都是英国CCleaner公司的产品。CCleaner是一款系统清理与优化软件。CCleaner Cloud是一款云端系统清理与优化软件。 CCleaner v5.33.6162版本和CCleaner Cloud v1.07.3191版本存在安全漏洞，该漏洞源于恶意预入口点加载器执行内存有效载荷，可能导致远程数据收集和渗漏。

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