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Microsoft Windows splWOW64 Privilege Escalation

Microsoft Windows splWOW64 Privilege Escalation
Posted Dec 23, 2020
Authored by Google Security Research, Maddie Stone

CVE-2020-0986, which was exploited in the wild, was not fixed. The vulnerability still exists, just the exploitation method had to change. A low integrity process can send LPC messages to splwow64.exe (Medium integrity) and gain a write-what-where primitive in splwow64’s memory space. The attacker controls the destination, the contents that are copied, and the number of bytes copied through a memcpy call.

tags | exploit
advisories | CVE-2020-0986, CVE-2020-17008
MD5 | 43653a72a19a4fb4ecc7c809b0ae1e68
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