Advisories

FreeRDP 2.0.0 before 3.32.0 Heap Out-of-Bounds Write via NTLM MIC Offset

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Severity
high
Date
Affecting
  • FreeRDP >= 2.0.0, < 3.32.0

CWE
  • CWE-787 Out-of-bounds Write
CVSS
8.3
CVSS V4 Vector
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
Credit
Kushalkhemka, mayank-jangid-moon, skigeek16, opensec-intelligence
Description
FreeRDP versions from 2.0.0 before 3.32.0 contain a heap out-of-bounds write in the server hash-callback NTLM path that fails to validate the MIC offset. Unauthenticated attackers can send a crafted AUTHENTICATE_MESSAGE with a backward session-key offset and MIC offset to write 16 zero bytes beyond the allocation.

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