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use toUnicode in RegexTreeView

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This commit is contained in:
Erik Krogh Kristensen
2021-09-02 13:49:32 +02:00
parent 4adb0c75bd
commit 8535e6f281
2 changed files with 7 additions and 3 deletions
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7
python/ql/lib/semmle/python/RegexTreeView.qll
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@@ -458,9 +458,10 @@ class RegExpEscape extends RegExpNormalChar {
or
this.getUnescaped() = "t" and result = "\t"
or
// TODO: Find a way to include a formfeed character
// this.getUnescaped() = "f" and result = " "
// or
this.getUnescaped() = "f" and result = 12.toUnicode()
or
this.getUnescaped() = "v" and result = 11.toUnicode()
or
isUnicode() and
result = getUnicode()
}

3
python/ql/test/query-tests/Security/CWE-730-ReDoS/ReDoS.expected
View File

@@ -35,6 +35,9 @@
| redos.py:139:25:139:31 | (\\w\|G)* | This part of the regular expression may cause exponential backtracking on strings containing many repetitions of 'G'. |
| redos.py:145:25:145:32 | (\\d\|\\w)* | This part of the regular expression may cause exponential backtracking on strings containing many repetitions of '0'. |
| redos.py:148:25:148:31 | (\\d\|5)* | This part of the regular expression may cause exponential backtracking on strings containing many repetitions of '5'. |
| redos.py:151:25:151:34 | (\\s\|[\\f])* | This part of the regular expression may cause exponential backtracking on strings containing many repetitions of '\u000c'. |
| redos.py:154:25:154:38 | (\\s\|[\\v]\|\\\\v)* | This part of the regular expression may cause exponential backtracking on strings containing many repetitions of '\u000b'. |
| redos.py:157:25:157:34 | (\\f\|[\\f])* | This part of the regular expression may cause exponential backtracking on strings containing many repetitions of '\u000c'. |
| redos.py:160:25:160:32 | (\\W\|\\D)* | This part of the regular expression may cause exponential backtracking on strings containing many repetitions of ' '. |
| redos.py:163:25:163:32 | (\\S\|\\w)* | This part of the regular expression may cause exponential backtracking on strings containing many repetitions of '0'. |
| redos.py:166:25:166:34 | (\\S\|[\\w])* | This part of the regular expression may cause exponential backtracking on strings containing many repetitions of '0'. |