Update dependency urllib3 to v1.26.5 [SECURITY]

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
urllib3 (source)	==1.25.7 -> ==1.26.5

GitHub 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-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.

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

• CVE-2021-33503
• JVNVU#​92413403 (English)
• JVNVU#​92413403 (Japanese)
• urllib3 v1.26.5

For more information

If you have any questions or comments about this advisory:

• Ask in our community Discord
• Email sethmichaellarson@gmail.com

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Release Notes

urllib3/urllib3

v1.26.5

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===================

• 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

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===================

• 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

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===================

• Fixed bytes and string comparison issue with headers (Pull #​2141)

• Changed ProxySchemeUnknown error message to be
  more actionable if the user supplies a proxy URL without
  a scheme. (Pull #​2107)

v1.26.2

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===================

• Fixed an issue where wrap_socket and CERT_REQUIRED wouldn't
  be imported properly on Python 2.7.8 and earlier (Pull #​2052)

v1.26.1

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====================

• Deprecated the urllib3[secure] extra and the urllib3.contrib.pyopenssl module.
  Both will be removed in v2.x. See this GitHub issue <https://github.com/urllib3/urllib3/issues/2680>_
  for justification and info on how to migrate.

v1.26.0

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===================

• NOTE: urllib3 v2.0 will drop support for Python 2.
  Read more in the v2.0 Roadmap <https://urllib3.readthedocs.io/en/latest/v2-roadmap.html>_.

• Added support for HTTPS proxies contacting HTTPS servers (Pull #​1923, Pull #​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)
  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) Starting in urllib3 v2.0: Deprecated options will be removed

• Added default User-Agent header to every request (Pull #​1750)

• Added urllib3.util.SKIP_HEADER for skipping User-Agent, Accept-Encoding,
  and Host headers from being automatically emitted with requests (Pull #​2018)

• Collapse transfer-encoding: chunked request data and framing into
  the same socket.send() call (Pull #​1906)

• Send http/1.1 ALPN identifier with every TLS handshake by default (Pull #​1894)

• Properly terminate SecureTransport connections when CA verification fails (Pull #​1977)

• Don't emit an SNIMissingWarning when passing server_hostname=None
  to SecureTransport (Pull #​1903)

• Disabled requesting TLSv1.2 session tickets as they weren't being used by urllib3 (Pull #​1970)

• Suppress BrokenPipeError when writing request body after the server
  has closed the socket (Pull #​1524)

• Wrap ssl.SSLError that can be raised from reading a socket (e.g. "bad MAC")
  into an urllib3.exceptions.SSLError (Pull #​1939)

v1.25.11

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====================

• 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, Pull #​1935, Pull #​1938, Pull #​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)

v1.25.10

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====================

• Added support for SSLKEYLOGFILE environment variable for
  logging TLS session keys with use with programs like
  Wireshark for decrypting captured web traffic (Pull #​1867)

• Fixed loading of SecureTransport libraries on macOS Big Sur
  due to the new dynamic linker cache (Pull #​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)

• Don't insert None into ConnectionPool if the pool
  was empty when requesting a connection (Pull #​1866)

• Avoid hasattr call in BrotliDecoder.decompress() (Pull #​1858)

v1.25.9

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===================

• 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 <https://github.com/urllib3/urllib3/issues/1850>_
  for more information on how to fix your proxy config. (Pull #​1851)

• Drain connection after PoolManager redirect (Pull #​1817)

• Ensure load_verify_locations raises SSLError for all backends (Pull #​1812)

• Rename VerifiedHTTPSConnection to HTTPSConnection (Pull #​1805)

• Allow the CA certificate data to be passed as a string (Pull #​1804)

• Raise ValueError if method contains control characters (Pull #​1800)

• Add __repr__ to Timeout (Pull #​1795)

v1.25.8

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===================

• Drop support for EOL Python 3.4 (Pull #​1774)

• Optimize _encode_invalid_chars (Pull #​1787)

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