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Katie Hockman 027d7241ce encoding/binary: read at most MaxVarintLen64 bytes in ReadUvarint
This CL ensures that ReadUvarint consumes only a limited
amount of input (instead of an unbounded amount).

On some inputs, ReadUvarint could read an arbitrary number
of bytes before deciding to return an overflow error.
After this CL, ReadUvarint returns that same overflow
error sooner, after reading at most MaxVarintLen64 bytes.

Fix authored by Robert Griesemer and Filippo Valsorda.

Thanks to Diederik Loerakker, Jonny Rhea, Raúl Kripalani,
and Preston Van Loon for reporting this.

Fixes #40618
Fixes CVE-2020-16845

Change-Id: Ie0cb15972f14c38b7cf7af84c45c4ce54909bb8f
Reviewed-on: https://team-review.git.corp.google.com/c/golang/go-private/+/812099
Reviewed-by: Filippo Valsorda <valsorda@google.com>
Reviewed-on: https://go-review.googlesource.com/c/go/+/247120
Run-TryBot: Katie Hockman <katie@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Alexander Rakoczy <alex@golang.org>
2020-08-06 17:24:10 +00:00
.github
api go/printer: remove exported StdFormat flag 2020-07-17 02:15:01 +00:00
doc doc/go1.15: fix a few trivial inconsistencies 2020-08-01 01:11:19 +00:00
lib/time lib/time, time/tzdata: update tz data to 2020a 2020-04-30 08:07:39 +00:00
misc cmd/cgo: fix mangling of enum and union types 2020-07-31 16:35:33 +00:00
src encoding/binary: read at most MaxVarintLen64 bytes in ReadUvarint 2020-08-06 17:24:10 +00:00
test cmd/compile: don't addLocalInductiveFacts if there is no direct edge from if block to phi block 2020-07-30 17:23:11 +00:00
.gitattributes all: treat all files as binary, but check in .bat with CRLF 2020-06-08 15:31:43 +00:00
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AUTHORS A+C: add Kush Patel (corporate CLA for Hootsuite Inc) 2020-07-08 00:10:44 +00:00
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CONTRIBUTORS A+C: add Kush Patel (corporate CLA for Hootsuite Inc) 2020-07-08 00:10:44 +00:00
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