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Advisories

Xorbits Xoscar 0.11.2 Unauthenticated Deserialization RCE via Actor Pool

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severity
critical
date
Affecting

  • xoscar >= 0.1.0, <= 0.11.2

CWE
  • CWE-502 Deserialization of Untrusted Data
CVSS
9.3
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Credit
Valentin Lobstein (Chocapikk)
Description
Xorbits Xoscar through 0.11.2 contains an unauthenticated deserialization vulnerability that allows remote attackers to execute arbitrary code by sending crafted data over the actor-pool TCP channel. Attackers can exploit SocketChannel.recv() passing unvalidated data to cloudpickle.loads(), which triggers pickle __reduce__ gadget execution before message type validation, achieving remote code execution as the server process which commonly runs as root on GPU nodes.

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