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Advisories

FreeRDP 3.0.0 before 3.32.2 Denial of Service via RemoteFX Region Assertion

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Severity
high
Date
Affecting

  • FreeRDP >= 3.0.0, < 3.32.2

CWE
  • CWE-617 Reachable Assertion
CVSS
7.1
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Credit
opensec-intelligence, Kushalkhemka, mayank-jangid-moon
Description
FreeRDP from 3.0.0 before 3.32.2 contains a denial of service vulnerability that allows malicious RDP servers to abort clients built with verbose WinPR assertions by sending crafted RemoteFX region rectangles. Attackers can supply a rectangle with x set to 65535 alongside a SurfaceBits destination left of 1, triggering a 16-bit coordinate assertion in rfx_process_message that terminates the client process.

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