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SMB2Client: Correctly handle signing when authenticated as guest

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Tal Aloni 2024-07-29 21:56:57 +03:00
parent 42ea6a5124
commit 9ff7adced4
1 changed files with 11 additions and 1 deletions
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12
SMBLibrary/Client/SMB2Client.cs
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@ -272,7 +272,17 @@ namespace SMBLibrary.Client
if (m_isLoggedIn) if (m_isLoggedIn)
{ {
SessionFlags sessionFlags = ((SessionSetupResponse)response).SessionFlags; SessionFlags sessionFlags = ((SessionSetupResponse)response).SessionFlags;
m_signingKey = SMB2Cryptography.GenerateSigningKey(m_sessionKey, m_dialect, null); if ((sessionFlags & SessionFlags.IsGuest) > 0)
{
// [MS-SMB2] 3.2.5.3.1 If the SMB2_SESSION_FLAG_IS_GUEST bit is set in the SessionFlags field of the SMB2
// SESSION_SETUP Response and if RequireMessageSigning is FALSE, Session.SigningRequired MUST be set to FALSE.
m_signingRequired = false;
}
else
{
m_signingKey = SMB2Cryptography.GenerateSigningKey(m_sessionKey, m_dialect, null);
}
if (m_dialect == SMB2Dialect.SMB300) if (m_dialect == SMB2Dialect.SMB300)
{ {
m_encryptSessionData = (sessionFlags & SessionFlags.EncryptData) > 0; m_encryptSessionData = (sessionFlags & SessionFlags.EncryptData) > 0;