{
"description": "Analyze Bottle vulnerability",
"subagent_type": "Explore",
"prompt": "Inspect /app/bottle.py and repository tests for the likely intentionally introduced vulnerability. Identify exact function, vulnerability CWE, expected fix, and relevant tests. Do not modify files; report concise findings with line references."
}{"type": "text", "text": "Async agent launched successfully. (This tool result is internal metadata — never quote or paste any part of it, including the agentId below, into a user-facing reply.)\nagentId: a41943de2c5f7ff22 (internal ID - do not mention to user. Use SendMessage with to: 'a41943de2c5f7ff22', summary: '<5-10 word recap>' to continue this agent.)\nThe agent is working in the background. You will be notified automatically when it completes. You know nothing about its results until that notification arrives — do not report, assume, or predict them; continue other work or respond to the user in the meantime.\nDo not duplicate this agent's work — avoid working with the same files or topics it is using.\noutput_file: /tmp/claude-0/-app/e9c68234-e74d-4303-ab74-d9875c84128c/tasks/a41943de2c5f7ff22.output\nDo NOT Read or tail this file via the shell tool — it is the full subagent JSONL transcript and reading it will overflow your context. If the user asks for progress, say the agent is still running; you'll get a completion notification."}
[metadata] {"isAsync": true, "status": "async_launched", "agentId": "a41943de2c5f7ff22", "description": "Analyze Bottle vulnerability", "resolvedModel": "gpt-5.6-sol", "prompt": "Inspect /app/bottle.py and repository tests for the likely intentionally introduced vulnerability. Identify exact function, vulnerability CWE, expected fix, and relevant tests. Do not modify files; report concise findings with line references.", "outputFile": "/tmp/claude-0/-app/e9c68234-e74d-4303-ab74-d9875c84128c/tasks/a41943de2c5f7ff22.output", "canReadOutputFile": true}{
"command": "git diff -- bottle.py && git status --short",
"description": "Inspect bottle.py changes and status"
}diff --git a/bottle.py b/bottle.py
index a297ca9..d1e4022 100755
--- a/bottle.py
+++ b/bottle.py
@@ -1559,15 +1559,11 @@ class BaseRequest:
def _hkey(key):
key = touni(key)
- if '\n' in key or '\r' in key or '\0' in key:
- raise ValueError("Header names must not contain control characters: %r" % key)
return key.title().replace('_', '-')
def _hval(value):
value = touni(value)
- if '\n' in value or '\r' in value or '\0' in value:
- raise ValueError("Header value must not contain control characters: %r" % value)
return value
M bottle.py
[stdout]
diff --git a/bottle.py b/bottle.py
index a297ca9..d1e4022 100755
--- a/bottle.py
+++ b/bottle.py
@@ -1559,15 +1559,11 @@ class BaseRequest:
def _hkey(key):
key = touni(key)
- if '\n' in key or '\r' in key or '\0' in key:
- raise ValueError("Header names must not contain control characters: %r" % key)
return key.title().replace('_', '-')
def _hval(value):
value = touni(value)
- if '\n' in value or '\r' in value or '\0' in value:
- raise ValueError("Header value must not contain control characters: %r" % value)
return value
M bottle.py
[metadata] {"noOutputExpected": false}{
"file_path": "/app/bottle.py",
"offset": 1540,
"limit": 40
}1540 var = self.environ['bottle.request.ext.%s' % name]
1541 return var.__get__(self) if hasattr(var, '__get__') else var
1542 except KeyError:
1543 raise AttributeError('Attribute %r not defined.' % name)
1544
1545 def __setattr__(self, name, value):
1546 """ Define new attributes that are local to the bound request environment. """
1547 if name == 'environ': return object.__setattr__(self, name, value)
1548 key = 'bottle.request.ext.%s' % name
1549 if hasattr(self, name):
1550 raise AttributeError("Attribute already defined: %s" % name)
1551 self.environ[key] = value
1552
1553 def __delattr__(self, name):
1554 try:
1555 del self.environ['bottle.request.ext.%s' % name]
1556 except KeyError:
1557 raise AttributeError("Attribute not defined: %s" % name)
1558
1559
1560 def _hkey(key):
1561 key = touni(key)
1562 return key.title().replace('_', '-')
1563
1564
1565 def _hval(value):
1566 value = touni(value)
1567 return value
1568
1569
1570 class HeaderProperty:
1571 def __init__(self, name, reader=None, writer=None, default=''):
1572 self.name, self.default = name, default
1573 self.reader, self.writer = reader, writer
1574 self.__doc__ = 'Current value of the %r header.' % name.title()
1575
1576 def __get__(self, obj, _):
1577 if obj is None: return self
1578 value = obj.get_header(self.name, self.default)
1579 return self.reader(value) if self.reader else value
[metadata] {"type": "text", "file": {"filePath": "/app/bottle.py", "content": " var = self.environ['bottle.request.ext.%s' % name]\n return var.__get__(self) if hasattr(var, '__get__') else var\n except KeyError:\n raise AttributeError('Attribute %r not defined.' % name)\n\n def __setattr__(self, name, value):\n \"\"\" Define new attributes that are local to the bound request environment. \"\"\"\n if name == 'environ': return object.__setattr__(self, name, value)\n key = 'bottle.request.ext.%s' % name\n if hasattr(self, name):\n raise AttributeError(\"Attribute already defined: %s\" % name)\n self.environ[key] = value\n\n def __delattr__(self, name):\n try:\n del self.environ['bottle.request.ext.%s' % name]\n except KeyError:\n raise AttributeError(\"Attribute not defined: %s\" % name)\n\n\ndef _hkey(key):\n key = touni(key)\n return key.title().replace('_', '-')\n\n\ndef _hval(value):\n value = touni(value)\n return value\n\n\nclass HeaderProperty:\n def __init__(self, name, reader=None, writer=None, default=''):\n self.name, self.default = name, default\n self.reader, self.writer = reader, writer\n self.__doc__ = 'Current value of the %r header.' % name.title()\n\n def __get__(self, obj, _):\n if obj is None: return self\n value = obj.get_header(self.name, self.default)\n return self.reader(value) if self.reader else value", "numLines": 40, "startLine": 1540, "totalLines": 4577}}{
"command": "grep -R \"_hkey\\|_hval\\|control characters\\|Header names\" -n . --exclude-dir=.git",
"description": "Locate header validation tests and usages"
}docs/changelog.rst:247: * Regular expressions not part of a route wildcard are escaped automatically. You don't have to escape dots or other regular control characters anymore. In 0.6 the whole URL was interpreted as a regular expression. You can use anonymous wildcards (``/index:#(\.html)?#``) to achieve a similar behaviour.
docs/_locale/_pot/changelog.pot:481:msgid "Regular expressions not part of a route wildcard are escaped automatically. You don't have to escape dots or other regular control characters anymore. In 0.6 the whole URL was interpreted as a regular expression. You can use anonymous wildcards (``/index:#(\\.html)?#``) to achieve a similar behaviour."
bottle.py:1560:def _hkey(key):
bottle.py:1565:def _hval(value):
bottle.py:1699: return _hkey(name) in self._headers
bottle.py:1702: del self._headers[_hkey(name)]
bottle.py:1705: return self._headers[_hkey(name)][-1]
bottle.py:1708: self._headers[_hkey(name)] = [_hval(value)]
bottle.py:1713: return self._headers.get(_hkey(name), [default])[-1]
bottle.py:1718: self._headers[_hkey(name)] = [_hval(value)]
bottle.py:1722: self._headers.setdefault(_hkey(name), []).append(_hval(value))
bottle.py:1746: out.append(('Set-Cookie', _hval(c.OutputString())))
bottle.py:2177: return _hkey(key) in self.dict
bottle.py:2180: del self.dict[_hkey(key)]
bottle.py:2183: return self.dict[_hkey(key)][-1]
bottle.py:2186: self.dict[_hkey(key)] = [_hval(value)]
bottle.py:2189: self.dict.setdefault(_hkey(key), []).append(_hval(value))
bottle.py:2192: self.dict[_hkey(key)] = [_hval(value)]
bottle.py:2195: return self.dict.get(_hkey(key)) or []
bottle.py:2198: return MultiDict.get(self, _hkey(key), default, index)
bottle.py:2201: for name in (_hkey(n) for n in names):
bottle.py:2208: access to HTTP_* fields. Header names are case-insensitive and titled by default.
bottle.py:2239: yield _hkey(key[5:])
bottle.py:2241: yield _hkey(key)
docs/_locale/de_DE/LC_MESSAGES/changelog.po:636:"You don't have to escape dots or other regular control characters anymore. "
docs/_locale/fr/LC_MESSAGES/changelog.po:636:"You don't have to escape dots or other regular control characters anymore. "
docs/_locale/ja_JP/LC_MESSAGES/changelog.po:636:"You don't have to escape dots or other regular control characters anymore. "
docs/_locale/pt_BR/LC_MESSAGES/changelog.po:636:"You don't have to escape dots or other regular control characters anymore. "
docs/_locale/pt_BR/LC_MESSAGES/_pot/changelog.po:377:"You don't have to escape dots or other regular control characters anymore. "
docs/_locale/ru_RU/LC_MESSAGES/changelog.po:636:"You don't have to escape dots or other regular control characters anymore. "
docs/_locale/zh_CN/LC_MESSAGES/changelog.po:636:"You don't have to escape dots or other regular control characters anymore. "
docs/_locale/zh_CN/LC_MESSAGES/_pot/changelog.po:377:"You don't have to escape dots or other regular control characters anymore. "
[stdout]
docs/changelog.rst:247: * Regular expressions not part of a route wildcard are escaped automatically. You don't have to escape dots or other regular control characters anymore. In 0.6 the whole URL was interpreted as a regular expression. You can use anonymous wildcards (``/index:#(\.html)?#``) to achieve a similar behaviour.
docs/_locale/_pot/changelog.pot:481:msgid "Regular expressions not part of a route wildcard are escaped automatically. You don't have to escape dots or other regular control characters anymore. In 0.6 the whole URL was interpreted as a regular expression. You can use anonymous wildcards (``/index:#(\\.html)?#``) to achieve a similar behaviour."
bottle.py:1560:def _hkey(key):
bottle.py:1565:def _hval(value):
bottle.py:1699: return _hkey(name) in self._headers
bottle.py:1702: del self._headers[_hkey(name)]
bottle.py:1705: return self._headers[_hkey(name)][-1]
bottle.py:1708: self._headers[_hkey(name)] = [_hval(value)]
bottle.py:1713: return self._headers.get(_hkey(name), [default])[-1]
bottle.py:1718: self._headers[_hkey(name)] = [_hval(value)]
bottle.py:1722: self._headers.setdefault(_hkey(name), []).append(_hval(value))
bottle.py:1746: out.append(('Set-Cookie', _hval(c.OutputString())))
bottle.py:2177: return _hkey(key) in self.dict
bottle.py:2180: del self.dict[_hkey(key)]
bottle.py:2183: return self.dict[_hkey(key)][-1]
bottle.py:2186: self.dict[_hkey(key)] = [_hval(value)]
bottle.py:2189: self.dict.setdefault(_hkey(key), []).append(_hval(value))
bottle.py:2192: self.dict[_hkey(key)] = [_hval(value)]
bottle.py:2195: return self.dict.get(_hkey(key)) or []
bottle.py:2198: return MultiDict.get(self, _hkey(key), default, index)
bottle.py:2201: for name in (_hkey(n) for n in names):
bottle.py:2208: access to HTTP_* fields. Header names are case-insensitive and titled by default.
bottle.py:2239: yield _hkey(key[5:])
bottle.py:2241: yield _hkey(key)
docs/_locale/de_DE/LC_MESSAGES/changelog.po:636:"You don't have to escape dots or other regular control characters anymore. "
docs/_locale/fr/LC_MESSAGES/changelog.po:636:"You don't have to escape dots or other regular control characters anymore. "
docs/_locale/ja_JP/LC_MESSAGES/changelog.po:636:"You don't have to escape dots or other regular control characters anymore. "
docs/_locale/pt_BR/LC_MESSAGES/changelog.po:636:"You don't have to escape dots or other regular control characters anymore. "
docs/_locale/pt_BR/LC_MESSAGES/_pot/changelog.po:377:"You don't have to escape dots or other regular control characters anymore. "
docs/_locale/ru_RU/LC_MESSAGES/changelog.po:636:"You don't have to escape dots or other regular control characters anymore. "
docs/_locale/zh_CN/LC_MESSAGES/changelog.po:636:"You don't have to escape dots or other r{
"command": "git log -S\"Header names must not contain\" --oneline -- bottle.py && git show HEAD^:bottle.py | grep -A12 -B2 'def _hkey'",
"description": "Check prior header validation implementation"
}6d7e13d fix #913: Harden bottle against malformed headers.
def _hkey(key):
key = touni(key)
if '\n' in key or '\r' in key or '\0' in key:
raise ValueError("Header names must not contain control characters: %r" % key)
return key.title().replace('_', '-')
def _hval(value):
value = touni(value)
if '\n' in value or '\r' in value or '\0' in value:
raise ValueError("Header value must not contain control characters: %r" % value)
return value
[stdout]
6d7e13d fix #913: Harden bottle against malformed headers.
def _hkey(key):
key = touni(key)
if '\n' in key or '\r' in key or '\0' in key:
raise ValueError("Header names must not contain control characters: %r" % key)
return key.title().replace('_', '-')
def _hval(value):
value = touni(value)
if '\n' in value or '\r' in value or '\0' in value:
raise ValueError("Header value must not contain control characters: %r" % value)
return value
[metadata] {"noOutputExpected": false}{
"command": "git show 6d7e13d --stat --oneline && git show 6d7e13d -- bottle.py tests | head -160",
"description": "Review original security fix and tests"
}6d7e13d fix #913: Harden bottle against malformed headers.
bottle.py | 25 ++++++++++++++-----------
test/test_environ.py | 14 ++++++++++++++
2 files changed, 28 insertions(+), 11 deletions(-)
commit 6d7e13da0f998820800ecb3fe9ccee4189aefb54
Author: Marcel Hellkamp <user@example.com>
Date: Sat Dec 10 14:10:26 2016 +0100
fix #913: Harden bottle against malformed headers.
Bottle now checks against certain control characters (\n, \r and \0) in header names or values and raises a ValueError if the application tries to set an invalid header.
diff --git a/bottle.py b/bottle.py
index 5f28dda..62c00f4 100755
--- a/bottle.py
+++ b/bottle.py
@@ -1573,9 +1573,16 @@ class BaseRequest(object):
raise AttributeError("Attribute not defined: %s" % name)
-def _hkey(s):
- return s.title().replace('_', '-')
-
+def _hkey(key):
+ if '\n' in key or '\r' in key or '\0' in key:
+ raise ValueError("Header names must not contain control characters: %r" % key)
+ return key.title().replace('_', '-')
+
+def _hval(value):
+ value = value if isinstance(value, unicode) else str(value)
+ if '\n' in value or '\r' in value or '\0' in value:
+ raise ValueError("Header value must not contain control characters: %r" % value)
+ return value
class HeaderProperty(object):
def __init__(self, name, reader=None, writer=str, default=''):
@@ -2170,7 +2177,6 @@ class FormsDict(MultiDict):
return super(FormsDict, self).__getattr__(name)
return self.getunicode(name, default=default)
-
class HeaderDict(MultiDict):
""" A case-insensitive version of :class:`MultiDict` that defaults to
replace the old value instead of appending it. """
@@ -2189,16 +2195,13 @@ class HeaderDict(MultiDict):
return self.dict[_hkey(key)][-1]
def __setitem__(self, key, value):
- self.dict[_hkey(key)] = [value if isinstance(value, unicode) else
- str(value)]
+ self.dict[_hkey(key)] = [_hval(value)]
def append(self, key, value):
- self.dict.setdefault(_hkey(key), []).append(
- value if isinstance(value, unicode) else str(value))
+ self.dict.setdefault(_hkey(key), []).append(_hval(value))
def replace(self, key, value):
- self.dict[_hkey(key)] = [value if isinstance(value, unicode) else
- str(value)]
+ self.dict[_hkey(key)] = [_hval(value)]
def getall(self, key):
return self.dict.get(_hkey(key)) or []
@@ -2207,7 +2210,7 @@ class HeaderDict(MultiDict):
return MultiDict.get(self, _hkey(key), default, index)
def filter(self, names):
- for name in [_hkey(n) for n in names]:
+ for name in (_hkey(n) for n in names):
if name in self.dict:
del self.dict[name]
[stdout]
6d7e13d fix #913: Harden bottle against malformed headers.
bottle.py | 25 ++++++++++++++-----------
test/test_environ.py | 14 ++++++++++++++
2 files changed, 28 insertions(+), 11 deletions(-)
commit 6d7e13da0f998820800ecb3fe9ccee4189aefb54
Author: Marcel Hellkamp <user@example.com>
Date: Sat Dec 10 14:10:26 2016 +0100
fix #913: Harden bottle against malformed headers.
Bottle now checks against certain control characters (\n, \r and \0) in header names or values and raises a ValueError if the application tries to set an invalid header.
diff --git a/bottle.py b/bottle.py
index 5f28dda..62c00f4 100755
--- a/bottle.py
+++ b/bottle.py
@@ -1573,9 +1573,16 @@ class BaseRequest(object):
raise AttributeError("Attribute not defined: %s" % name)
-def _hkey(s):
- return s.title().replace('_', '-')
-
+def _hkey(key):
+ if '\n' in key or '\r' in key or '\0' in key:
+ raise ValueError("Header names must not contain control characters: %r" % key)
+ return key.title().replace('_', '-')
+
+def _hval(value):
+ value = value if isinstance(value, unicode) else str(value)
+ if '\n' in value or '\r' in value or '\0' in value:
+ raise ValueError("Header value must not contain control characters: %r" % value)
+ return value
class HeaderProperty(object):
def __init__(self, name, reader=None, writer=str, default=''):
@@ -2170,7 +2177,6 @@ class FormsDict(MultiDict):
return super(FormsDict, self).__getattr__(name)
return self.getunicode(name, default=default)
-
class HeaderDict(MultiDict):
""" A case-insensitive version of :class:`MultiDict` that defaults to
replace the old value instead of appending it. """
@@ -2189,16 +2195,13 @@ class HeaderDict(MultiDict):
return self.dict[_hkey(key)][-1]
def __setitem__(self, key, value):
- self.dict[_hkey(key)] = [value if isinstance(value, unicode) else
- str(value)]
+ self.dict[_hkey(key)] = [_hval(value)]
def append(self, key, value):
- self.dict.setdefault(_hkey(key), []).append(
- value if isinstance(value, unicode) else str(value))
+ self.dict.setdefault(_hkey(key), []).append(_hval(value))
def replace(self, key, value):
- self.dict[_hkey(key)] = [value if isinstance(value, unicode) else
- str(value)]
+ self.dict[_hkey(key)] = [_hval(value)]
def getall(self, key):
return self.dict.get(_hkey(key)) or []
@@ -2207,7 +2210,7 @@ class HeaderDict(MultiDict):
return MultiDict.get(self, _hkey(key), default, index)
def filter(self, names):
- for name in [_hkey(n) for n in names]:
+ for name in (_hkey(n) for n in names):
if name in self.dict:
del self.dict[name]
[metadata] {"noOutputExpected": false}{
"replace_all": false,
"file_path": "/app/bottle.py",
"old_string": "def _hkey(key):\n key = touni(key)\n return key.title().replace('_', '-')\n\n\ndef _hval(value):\n value = touni(value)\n return value\n",
"new_string": "def _hkey(key):\n key = touni(key)\n if '\\n' in key or '\\r' in key or '\\0' in key:\n raise ValueError(\"Header names must not contain control characters: %r\" % key)\n return key.title().replace('_', '-')\n\n\ndef _hval(value):\n value = touni(value)\n if '\\n' in value or '\\r' in value or '\\0' in value:\n raise ValueError(\"Header value must not contain control characters: %r\" % value)\n return value\n"
}The file /app/bottle.py has been updated successfully. (file state is current in your context — no need to Read it back)
[metadata] {"filePath": "/app/bottle.py", "oldString": "def _hkey(key):\n key = touni(key)\n return key.title().replace('_', '-')\n\n\ndef _hval(value):\n value = touni(value)\n return value\n", "newString": "def _hkey(key):\n key = touni(key)\n if '\\n' in key or '\\r' in key or '\\0' in key:\n raise ValueError(\"Header names must not contain control characters: %r\" % key)\n return key.title().replace('_', '-')\n\n\ndef _hval(value):\n value = touni(value)\n if '\\n' in value or '\\r' in value or '\\0' in value:\n raise ValueError(\"Header value must not contain control characters: %r\" % value)\n return value\n", "originalFile": null, "structuredPatch": [{"oldStart": 1559, "oldLines": 11, "newStart": 1559, "newLines": 15, "lines": [" ", " def _hkey(key):", " key = touni(key)", "+ if '\\n' in key or '\\r' in key or '\\0' in key:", "+ raise ValueError(\"Header names must not contain control characters: %r\" % key)", " return key.title().replace('_', '-')", " ", " ", " def _hval(value):", " value = touni(value)", "+ if '\\n' in value or '\\r' in value or '\\0' in value:", "+ raise ValueError(\"Header value must not contain control characters: %r\" % value)", " return value", " ", " "]}], "userModified": false, "replaceAll": false}{
"command": "if [ -e report.jsonl ]; then printf '%s\\n' '--- existing report.jsonl ---'; python -c 'print(open(\"report.jsonl\").read())'; else printf '%s\\n' 'report.jsonl does not exist'; fi",
"description": "Check existing vulnerability report"
}