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de8681b4a2
Passing a heavily nested list to sqlparse.parse() leads to a Denial
of Service due to RecursionError.
Reference:
https://nvd.nist.gov/vuln/detail/CVE-2024-4340
Upstream-patch:
b4a39d9850
Signed-off-by: Soumya Sambu <soumya.sambu@windriver.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
49 lines
1.4 KiB
Diff
49 lines
1.4 KiB
Diff
From b4a39d9850969b4e1d6940d32094ee0b42a2cf03 Mon Sep 17 00:00:00 2001
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From: Andi Albrecht <albrecht.andi@gmail.com>
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Date: Sat, 13 Apr 2024 13:59:00 +0200
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Subject: [PATCH] Raise SQLParseError instead of RecursionError.
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CVE: CVE-2024-4340
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Upstream-Status: Backport [https://github.com/andialbrecht/sqlparse/commit/b4a39d9850969b4e1d6940d32094ee0b42a2cf03]
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Signed-off-by: Soumya Sambu <soumya.sambu@windriver.com>
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---
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sqlparse/sql.py | 14 +++++++++-----
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1 file changed, 9 insertions(+), 5 deletions(-)
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diff --git a/sqlparse/sql.py b/sqlparse/sql.py
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index 6a32c26..ffffc77 100644
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--- a/sqlparse/sql.py
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+++ b/sqlparse/sql.py
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@@ -10,6 +10,7 @@
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import re
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from sqlparse import tokens as T
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+from sqlparse.exceptions import SQLParseError
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from sqlparse.utils import imt, remove_quotes
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@@ -209,11 +210,14 @@ class TokenList(Token):
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This method is recursively called for all child tokens.
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"""
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- for token in self.tokens:
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- if token.is_group:
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- yield from token.flatten()
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- else:
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- yield token
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+ try:
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+ for token in self.tokens:
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+ if token.is_group:
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+ yield from token.flatten()
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+ else:
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+ yield token
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+ except RecursionError as err:
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+ raise SQLParseError('Maximum recursion depth exceeded') from err
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def get_sublists(self):
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for token in self.tokens:
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--
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2.40.0
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