NEC EXPRESSCLUSTER X Transaction Server 0x32 File Read Vulnerability


An arbitrary file read vulnerability has been found in NEC EXPRESSCLUSTER X that can allow an attacker to read files off the target system. The Transaction Server (clptrnsv.exe) is a system service configured to utilize port 29002 by default to facilitate transactions such as sending and receiving licensing data. This vulnerability occurs during the processing of opcode 0x32, an attacker is able to introduce crafted data into the clptrnsv service to expose arbitrary paths through fopen, fseek, and fread.

Vulnerability Identifiers

  • Exodus Intelligence: EIP-852fe633
  • MITRE CVE: CVE-2021-20707

Vulnerability Metrics

  • CVSSv2 Score: 7.8

Vendor References

Discovery Credit

  • Exodus Intelligence

Disclosure Timeline

  • Disclosed to affected vendor: February 25th, 2021
  • Disclosed to public: October 29th, 2021

Further Information

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