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Advisories

LightLLM through 1.2.0 Unauthenticated DoS via pd_kv_trans_params Deserialization

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Severity
high
Date
Affecting

  • LightLLM <= 1.2.0

CWE
  • CWE-502 Deserialization of Untrusted Data
CVSS
8.7
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Credit
Mingkai Yu, Jiapeng Li, Qiang Fu, Jiajia Liu
Description
LightLLM through 1.2.0 contains a denial of service vulnerability that allows unauthenticated attackers to crash the inference worker by supplying the internal pd_kv_trans_params field to the /generate endpoint. Attackers can send a single request whose parameters cause pickle.loads to fail in InferSamplingParams, killing the inference thread while /health stays up and all later requests hang until restart.

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