Fixes the following security issues:
- bpo-43434: Creating a sqlite3.Connection object now also produces a
sqlite3.connect auditing event. Previously this event was only produced
by sqlite3.connect() calls. Patch by Erlend E. Aasland.
- bpo-43882: The presence of newline or tab characters in parts of a URL
could allow some forms of attacks.
Following the controlling specification for URLs defined by WHATWG
urllib.parse() now removes ASCII newlines and tabs from URLs, preventing
such attacks.
- bpo-43472: Ensures interpreter-level audit hooks receive the
cpython.PyInterpreterState_New event when called through the
_xxsubinterpreters module.
- bpo-36384: ipaddress module no longer accepts any leading zeros in IPv4
address strings. Leading zeros are ambiguous and interpreted as octal
notation by some libraries. For example the legacy function
socket.inet_aton() treats leading zeros as octal notatation. glibc
implementation of modern inet_pton() does not accept any leading zeros.
For a while the ipaddress module used to accept ambiguous leading zeros.
- bpo-43075: Fix Regular Expression Denial of Service (ReDoS) vulnerability
in urllib.request.AbstractBasicAuthHandler. The ReDoS-vulnerable regex
has quadratic worst-case complexity and it allows cause a denial of
service when identifying crafted invalid RFCs. This ReDoS issue is on the
client side and needs remote attackers to control the HTTP server.
- bpo-42800: Audit hooks are now fired for frame.f_code, traceback.tb_frame,
and generator code/frame attribute access.
https://www.python.org/downloads/release/python-395/
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
