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Roland Shoemaker 0d347544cb html/template: emit filterFailsafe for empty unquoted attr value
An unquoted action used as an attribute value can result in unsafe
behavior if it is empty, as HTML normalization will result in unexpected
attributes, and may allow attribute injection. If executing a template
results in a empty unquoted attribute value, emit filterFailsafe
instead.

Thanks to Juho Nurminen of Mattermost for reporting this issue.

Fixes #59722
Fixes CVE-2023-29400

Change-Id: Ia38d1b536ae2b4af5323a6c6d861e3c057c2570a
Reviewed-on: https://team-review.git.corp.google.com/c/golang/go-private/+/1826631
Reviewed-by: Julie Qiu <julieqiu@google.com>
Run-TryBot: Roland Shoemaker <bracewell@google.com>
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-on: https://go-review.googlesource.com/c/go/+/491617
Run-TryBot: Carlos Amedee <carlos@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2023-05-02 19:42:28 +00:00
.github doc: normalize proposal-process links 2023-03-29 22:00:27 +00:00
api io/fs: add FormatFileInfo and FormatDirEntry functions 2023-05-02 17:59:28 +00:00
doc doc: fix typo in Go 1.21 release notes 2023-04-24 18:13:34 +00:00
lib/time time/tzdata: generate zip constant during cmd/dist 2023-01-17 22:30:53 +00:00
misc misc/android: copy entire modules in module mode 2023-05-01 15:30:35 +00:00
src html/template: emit filterFailsafe for empty unquoted attr value 2023-05-02 19:42:28 +00:00
test cmd/link: put zero-sized data symbols at same address as runtime.zerobase 2023-04-28 18:35:43 +00:00
.gitattributes
.gitignore cmd/dist: refactor generated cgo-support logic 2023-04-20 17:26:46 +00:00
codereview.cfg
CONTRIBUTING.md doc: normalize proposal-process links 2023-03-29 22:00:27 +00:00
go.env cmd/go: introduce GOROOT/go.env and move proxy/sumdb config there 2023-01-17 23:10:39 +00:00
LICENSE
PATENTS
README.md README: update from CC-BY-3.0 to CC-BY-4.0 2022-11-02 20:14:56 +00:00
SECURITY.md SECURITY.md: replace golang.org with go.dev 2022-04-26 19:59:47 +00:00

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