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Merge pull request #413 from md347/master

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Update FileAnalysis.cs
This commit is contained in:
Carlos Polop
2024-02-23 15:10:27 +01:00
committed by GitHub
parent 186ae60e9e 41d6a03db3
commit 0cc314fe04
1 changed files with 7 additions and 4 deletions
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11
winPEAS/winPEASexe/winPEAS/Checks/FileAnalysis.cs
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@@ -158,16 +158,19 @@ namespace winPEAS.Checks
bool is_re_match = false;
try
{
// Escape backslashes in the regex string
string escapedRegex = regex_str.Trim().Replace(@"\", @"\\");
// Use "IsMatch" because it supports timeout, if exception is thrown exit the func to avoid ReDoS in "rgx.Matches"
if (caseinsensitive)
{
is_re_match = Regex.IsMatch(text, regex_str.Trim(), RegexOptions.IgnoreCase, TimeSpan.FromSeconds(120));
rgx = new Regex(regex_str.Trim(), RegexOptions.IgnoreCase);
is_re_match = Regex.IsMatch(text, escapedRegex, RegexOptions.IgnoreCase, TimeSpan.FromSeconds(120));
rgx = new Regex(escapedRegex, RegexOptions.IgnoreCase);
}
else
{
is_re_match = Regex.IsMatch(text, regex_str.Trim(), RegexOptions.None, TimeSpan.FromSeconds(120));
rgx = new Regex(regex_str.Trim());
is_re_match = Regex.IsMatch(text, escapedRegex, RegexOptions.None, TimeSpan.FromSeconds(120));
rgx = new Regex(escapedRegex);
}
}
catch (RegexMatchTimeoutException e)