An AI exploration on how to create maps and a infrastructure to display it in an exhibition space. A collaboration between Birds On Mars and Technologiestiftung Berlin/CityLAB.
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chore(deps): update dependency urllib3 to v1.26.5 [security] - autoclosed #58
The _encode_invalid_chars function in util/url.py in the urllib3 library 1.25.2 through 1.25.7 for Python allows a denial of service (CPU consumption) because of an inefficient algorithm. The percent_encodings array contains all matches of percent encodings. It is not deduplicated. For a URL of length N, the size of percent_encodings may be up to O(N). The next step (normalize existing percent-encoded bytes) also takes up to O(N) for each step, so the total time is O(N^2). If percent_encodings were deduplicated, the time to compute _encode_invalid_chars would be O(kN), where k is at most 484 ((10+6*2)^2).
When provided with a URL containing many @ characters in the authority component the authority regular expression exhibits catastrophic backtracking causing a denial of service if a URL were passed as a parameter or redirected to via an HTTP redirect.
urllib3 before 1.25.9 allows CRLF injection if the attacker controls the HTTP request method, as demonstrated by inserting CR and LF control characters in the first argument of putrequest(). NOTE: this is similar to CVE-2020-26116.
Release Notes
urllib3/urllib3
### [`v1.26.5`](https://togithub.com/urllib3/urllib3/blob/master/CHANGES.rst#1265-2021-05-26)
[Compare Source](https://togithub.com/urllib3/urllib3/compare/1.26.4...1.26.5)
\===================
- Fixed deprecation warnings emitted in Python 3.10.
- Updated vendored `six` library to 1.16.0.
- Improved performance of URL parser when splitting
the authority component.
### [`v1.26.4`](https://togithub.com/urllib3/urllib3/blob/master/CHANGES.rst#1264-2021-03-15)
[Compare Source](https://togithub.com/urllib3/urllib3/compare/1.26.3...1.26.4)
\===================
- Changed behavior of the default `SSLContext` when connecting to HTTPS proxy
during HTTPS requests. The default `SSLContext` now sets `check_hostname=True`.
### [`v1.26.3`](https://togithub.com/urllib3/urllib3/blob/master/CHANGES.rst#1263-2021-01-26)
[Compare Source](https://togithub.com/urllib3/urllib3/compare/1.26.2...1.26.3)
\===================
- Fixed bytes and string comparison issue with headers (Pull [#2141](https://togithub.com/urllib3/urllib3/issues/2141))
- Changed `ProxySchemeUnknown` error message to be
more actionable if the user supplies a proxy URL without
a scheme. (Pull [#2107](https://togithub.com/urllib3/urllib3/issues/2107))
### [`v1.26.2`](https://togithub.com/urllib3/urllib3/blob/master/CHANGES.rst#1262-2020-11-12)
[Compare Source](https://togithub.com/urllib3/urllib3/compare/1.26.1...1.26.2)
\===================
- Fixed an issue where `wrap_socket` and `CERT_REQUIRED` wouldn't
be imported properly on Python 2.7.8 and earlier (Pull [#2052](https://togithub.com/urllib3/urllib3/issues/2052))
### [`v1.26.1`](https://togithub.com/urllib3/urllib3/blob/master/CHANGES.rst#1261-2020-11-11)
[Compare Source](https://togithub.com/urllib3/urllib3/compare/1.26.0...1.26.1)
\===================
- Fixed an issue where two `User-Agent` headers would be sent if a
`User-Agent` header key is passed as `bytes` (Pull [#2047](https://togithub.com/urllib3/urllib3/issues/2047))
### [`v1.26.0`](https://togithub.com/urllib3/urllib3/blob/master/CHANGES.rst#1260-2020-11-10)
[Compare Source](https://togithub.com/urllib3/urllib3/compare/1.25.11...1.26.0)
\===================
- **NOTE: urllib3 v2.0 will drop support for Python 2**.
`Read more in the v2.0 Roadmap `\_.
- Added support for HTTPS proxies contacting HTTPS servers (Pull [#1923](https://togithub.com/urllib3/urllib3/issues/1923), Pull [#1806](https://togithub.com/urllib3/urllib3/issues/1806))
- Deprecated negotiating TLSv1 and TLSv1.1 by default. Users that
still wish to use TLS earlier than 1.2 without a deprecation warning
should opt-in explicitly by setting `ssl_version=ssl.PROTOCOL_TLSv1_1` (Pull [#2002](https://togithub.com/urllib3/urllib3/issues/2002))
**Starting in urllib3 v2.0: Connections that receive a `DeprecationWarning` will fail**
- Deprecated `Retry` options `Retry.DEFAULT_METHOD_WHITELIST`, `Retry.DEFAULT_REDIRECT_HEADERS_BLACKLIST`
and `Retry(method_whitelist=...)` in favor of `Retry.DEFAULT_ALLOWED_METHODS`,
`Retry.DEFAULT_REMOVE_HEADERS_ON_REDIRECT`, and `Retry(allowed_methods=...)`
(Pull [#2000](https://togithub.com/urllib3/urllib3/issues/2000)) **Starting in urllib3 v2.0: Deprecated options will be removed**
- Added default `User-Agent` header to every request (Pull [#1750](https://togithub.com/urllib3/urllib3/issues/1750))
- Added `urllib3.util.SKIP_HEADER` for skipping `User-Agent`, `Accept-Encoding`,
and `Host` headers from being automatically emitted with requests (Pull [#2018](https://togithub.com/urllib3/urllib3/issues/2018))
- Collapse `transfer-encoding: chunked` request data and framing into
the same `socket.send()` call (Pull [#1906](https://togithub.com/urllib3/urllib3/issues/1906))
- Send `http/1.1` ALPN identifier with every TLS handshake by default (Pull [#1894](https://togithub.com/urllib3/urllib3/issues/1894))
- Properly terminate SecureTransport connections when CA verification fails (Pull [#1977](https://togithub.com/urllib3/urllib3/issues/1977))
- Don't emit an `SNIMissingWarning` when passing `server_hostname=None`
to SecureTransport (Pull [#1903](https://togithub.com/urllib3/urllib3/issues/1903))
- Disabled requesting TLSv1.2 session tickets as they weren't being used by urllib3 (Pull [#1970](https://togithub.com/urllib3/urllib3/issues/1970))
- Suppress `BrokenPipeError` when writing request body after the server
has closed the socket (Pull [#1524](https://togithub.com/urllib3/urllib3/issues/1524))
- Wrap `ssl.SSLError` that can be raised from reading a socket (e.g. "bad MAC")
into an `urllib3.exceptions.SSLError` (Pull [#1939](https://togithub.com/urllib3/urllib3/issues/1939))
### [`v1.25.11`](https://togithub.com/urllib3/urllib3/blob/master/CHANGES.rst#12511-2020-10-19)
[Compare Source](https://togithub.com/urllib3/urllib3/compare/1.25.10...1.25.11)
\====================
- Fix retry backoff time parsed from `Retry-After` header when given
in the HTTP date format. The HTTP date was parsed as the local timezone
rather than accounting for the timezone in the HTTP date (typically
UTC) (Pull [#1932](https://togithub.com/urllib3/urllib3/issues/1932), Pull [#1935](https://togithub.com/urllib3/urllib3/issues/1935), Pull [#1938](https://togithub.com/urllib3/urllib3/issues/1938), Pull [#1949](https://togithub.com/urllib3/urllib3/issues/1949))
- Fix issue where an error would be raised when the `SSLKEYLOGFILE`
environment variable was set to the empty string. Now `SSLContext.keylog_file`
is not set in this situation (Pull [#2016](https://togithub.com/urllib3/urllib3/issues/2016))
### [`v1.25.10`](https://togithub.com/urllib3/urllib3/blob/master/CHANGES.rst#12510-2020-07-22)
[Compare Source](https://togithub.com/urllib3/urllib3/compare/1.25.9...1.25.10)
\====================
- Added support for `SSLKEYLOGFILE` environment variable for
logging TLS session keys with use with programs like
Wireshark for decrypting captured web traffic (Pull [#1867](https://togithub.com/urllib3/urllib3/issues/1867))
- Fixed loading of SecureTransport libraries on macOS Big Sur
due to the new dynamic linker cache (Pull [#1905](https://togithub.com/urllib3/urllib3/issues/1905))
- Collapse chunked request bodies data and framing into one
call to `send()` to reduce the number of TCP packets by 2-4x (Pull [#1906](https://togithub.com/urllib3/urllib3/issues/1906))
- Don't insert `None` into `ConnectionPool` if the pool
was empty when requesting a connection (Pull [#1866](https://togithub.com/urllib3/urllib3/issues/1866))
- Avoid `hasattr` call in `BrotliDecoder.decompress()` (Pull [#1858](https://togithub.com/urllib3/urllib3/issues/1858))
### [`v1.25.9`](https://togithub.com/urllib3/urllib3/blob/master/CHANGES.rst#1259-2020-04-16)
[Compare Source](https://togithub.com/urllib3/urllib3/compare/1.25.8...1.25.9)
\===================
- Added `InvalidProxyConfigurationWarning` which is raised when
erroneously specifying an HTTPS proxy URL. urllib3 doesn't currently
support connecting to HTTPS proxies but will soon be able to
and we would like users to migrate properly without much breakage.
See `this GitHub issue `\_
for more information on how to fix your proxy config. (Pull [#1851](https://togithub.com/urllib3/urllib3/issues/1851))
- Drain connection after `PoolManager` redirect (Pull [#1817](https://togithub.com/urllib3/urllib3/issues/1817))
- Ensure `load_verify_locations` raises `SSLError` for all backends (Pull [#1812](https://togithub.com/urllib3/urllib3/issues/1812))
- Rename `VerifiedHTTPSConnection` to `HTTPSConnection` (Pull [#1805](https://togithub.com/urllib3/urllib3/issues/1805))
- Allow the CA certificate data to be passed as a string (Pull [#1804](https://togithub.com/urllib3/urllib3/issues/1804))
- Raise `ValueError` if method contains control characters (Pull [#1800](https://togithub.com/urllib3/urllib3/issues/1800))
- Add `__repr__` to `Timeout` (Pull [#1795](https://togithub.com/urllib3/urllib3/issues/1795))
### [`v1.25.8`](https://togithub.com/urllib3/urllib3/blob/master/CHANGES.rst#1258-2020-01-20)
[Compare Source](https://togithub.com/urllib3/urllib3/compare/1.25.7...1.25.8)
\===================
- Drop support for EOL Python 3.4 (Pull [#1774](https://togithub.com/urllib3/urllib3/issues/1774))
- Optimize \_encode_invalid_chars (Pull [#1787](https://togithub.com/urllib3/urllib3/issues/1787))
Configuration
📅 Schedule: "" in timezone Europe/Berlin.
🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.
♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.
🔕 Ignore: Close this PR and you won't be reminded about this update again.
[ ] If you want to rebase/retry this PR, check this box.
This PR contains the following updates:
==1.25.7->==1.26.5GitHub Vulnerability Alerts
CVE-2020-7212
The _encode_invalid_chars function in util/url.py in the urllib3 library 1.25.2 through 1.25.7 for Python allows a denial of service (CPU consumption) because of an inefficient algorithm. The percent_encodings array contains all matches of percent encodings. It is not deduplicated. For a URL of length N, the size of percent_encodings may be up to O(N). The next step (normalize existing percent-encoded bytes) also takes up to O(N) for each step, so the total time is O(N^2). If percent_encodings were deduplicated, the time to compute _encode_invalid_chars would be O(kN), where k is at most 484 ((10+6*2)^2).
CVE-2021-33503
Impact
When provided with a URL containing many
@characters in the authority component the authority regular expression exhibits catastrophic backtracking causing a denial of service if a URL were passed as a parameter or redirected to via an HTTP redirect.Patches
The issue has been fixed in urllib3 v1.26.5.
References
For more information
If you have any questions or comments about this advisory:
CVE-2020-26137
urllib3 before 1.25.9 allows CRLF injection if the attacker controls the HTTP request method, as demonstrated by inserting CR and LF control characters in the first argument of putrequest(). NOTE: this is similar to CVE-2020-26116.
Release Notes
urllib3/urllib3
### [`v1.26.5`](https://togithub.com/urllib3/urllib3/blob/master/CHANGES.rst#1265-2021-05-26) [Compare Source](https://togithub.com/urllib3/urllib3/compare/1.26.4...1.26.5) \=================== - Fixed deprecation warnings emitted in Python 3.10. - Updated vendored `six` library to 1.16.0. - Improved performance of URL parser when splitting the authority component. ### [`v1.26.4`](https://togithub.com/urllib3/urllib3/blob/master/CHANGES.rst#1264-2021-03-15) [Compare Source](https://togithub.com/urllib3/urllib3/compare/1.26.3...1.26.4) \=================== - Changed behavior of the default `SSLContext` when connecting to HTTPS proxy during HTTPS requests. The default `SSLContext` now sets `check_hostname=True`. ### [`v1.26.3`](https://togithub.com/urllib3/urllib3/blob/master/CHANGES.rst#1263-2021-01-26) [Compare Source](https://togithub.com/urllib3/urllib3/compare/1.26.2...1.26.3) \=================== - Fixed bytes and string comparison issue with headers (Pull [#2141](https://togithub.com/urllib3/urllib3/issues/2141)) - Changed `ProxySchemeUnknown` error message to be more actionable if the user supplies a proxy URL without a scheme. (Pull [#2107](https://togithub.com/urllib3/urllib3/issues/2107)) ### [`v1.26.2`](https://togithub.com/urllib3/urllib3/blob/master/CHANGES.rst#1262-2020-11-12) [Compare Source](https://togithub.com/urllib3/urllib3/compare/1.26.1...1.26.2) \=================== - Fixed an issue where `wrap_socket` and `CERT_REQUIRED` wouldn't be imported properly on Python 2.7.8 and earlier (Pull [#2052](https://togithub.com/urllib3/urllib3/issues/2052)) ### [`v1.26.1`](https://togithub.com/urllib3/urllib3/blob/master/CHANGES.rst#1261-2020-11-11) [Compare Source](https://togithub.com/urllib3/urllib3/compare/1.26.0...1.26.1) \=================== - Fixed an issue where two `User-Agent` headers would be sent if a `User-Agent` header key is passed as `bytes` (Pull [#2047](https://togithub.com/urllib3/urllib3/issues/2047)) ### [`v1.26.0`](https://togithub.com/urllib3/urllib3/blob/master/CHANGES.rst#1260-2020-11-10) [Compare Source](https://togithub.com/urllib3/urllib3/compare/1.25.11...1.26.0) \=================== - **NOTE: urllib3 v2.0 will drop support for Python 2**. `Read more in the v2.0 RoadmapConfiguration
📅 Schedule: "" in timezone Europe/Berlin.
🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.
♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.
🔕 Ignore: Close this PR and you won't be reminded about this update again.
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