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Advisories

Unisys WebPerfect Image Suite 3.0 NTLMv2 Hash Leakage via .NET Remoting

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severity
high
date
Affecting

  • WebPerfect Image Suite v3.0.3960.22810, 3.0.3960.22604

  • An affected version range remains undefined

CWE
  • CWE-441 Unintended Proxy or Intermediary ('Confused Deputy')
CVSS
7
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:H/SI:H/SA:N
Credit
Victor A. Morales, Senior Pentester Team Leader, GM Sectec, Corp.
Description
Unisys WebPerfect Image Suite versions 3.0.3960.22810 and 3.0.3960.22604 expose a deprecated .NET Remoting TCP channel that allows remote unauthenticated attackers to leak NTLMv2 machine-account hashes by supplying a Windows UNC path as a target file argument through object-unmarshalling techniques. Attackers can capture the leaked NTLMv2 hash and relay it to other hosts to achieve privilege escalation or lateral movement depending on network configuration and patch level.

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