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[winpr,sspi] Add type checks for negotiate_read_neg_token

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check the value range of negState before using it.
This commit is contained in:
akallabeth
2026-01-09 09:12:25 +01:00
parent 91cd43ea7c
commit 66a3264903
1 changed files with 15 additions and 2 deletions
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17
winpr/libwinpr/sspi/Negotiate/negotiate.c
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@@ -541,8 +541,21 @@ static BOOL negotiate_read_neg_token(PSecBuffer input, NegToken* token)
WinPrAsn1_ENUMERATED rd = 0;
if (!WinPrAsn1DecReadEnumerated(&dec2, &rd))
return FALSE;
token->negState = rd;
WLog_DBG(TAG, "\tnegState [0] (%d)", token->negState);
switch (rd)
{
case NOSTATE:
case ACCEPT_COMPLETED:
case ACCEPT_INCOMPLETE:
case REJECT:
case REQUEST_MIC:
break;
default:
WLog_ERR(TAG, "Invalid negState enumeration value %d", rd);
return FALSE;
}
token->negState = WINPR_ASSERTING_INT_CAST(enum NegState, rd);
WLog_DBG(TAG, "\tnegState [0] (%d)", rd);
}
break;
case 1: