Advisories

Sliver 1.7.7 Denial of Service via PE Parser Slice Bounds in Operator RPC

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severity
medium
date
Affecting
  • >= 1.1.0, <= 1.7.7

CWE
  • CWE-125 Out-of-bounds Read
CVSS
6.8
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Credit
h00die
Description
Sliver C2 framework version 1.7.7 and earlier contains an unhandled panic vulnerability in the operator gRPC handler that allows an attacker controlling a compromised implant to crash the entire teamserver by returning a malformed or empty Download response. Attackers can send zero-length or 1-3 byte data payloads through a hostile implant session to trigger an out-of-bounds slice access in the vendored Binject library's BinaryMagic function, which propagates unrecovered through the operator gRPC interceptor chain and terminates the server process, affecting all connected operators.

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