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html/template: errors returned from MarshalJSON are not correctly escaped [1.21 backport] #65968

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gopherbot opened this issue Feb 27, 2024 · 2 comments
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html/template: errors returned from MarshalJSON are not correctly escaped [1.21 backport] #65968

gopherbot opened this issue Feb 27, 2024 · 2 comments
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CherryPickApproved Used during the release process for point releases Security
Milestone
Go1.21.8

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@gopherbot
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@rolandshoemaker requested issue #65697 to be considered for backport to the next 1.21 minor release.

@gopherbot please open backport issues, this is a PUBLIC track security issue.
@gopherbot gopherbot added CherryPickCandidate Used during the release process for point releases Security labels Feb 27, 2024
@gopherbot gopherbot mentioned this issue Feb 27, 2024
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@gopherbot gopherbot added this to the Go1.21.8 milestone Feb 27, 2024
@rolandshoemaker rolandshoemaker added CherryPickApproved Used during the release process for point releases and removed CherryPickCandidate Used during the release process for point releases labels Feb 27, 2024
@gopherbot
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Change https://go.dev/cl/567515 mentions this issue: [release-branch.go1.21] html/template: escape additional tokens in MarshalJSON errors

@gopherbot
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Closed by merging 3643147 to release-branch.go1.21.

gopherbot pushed a commit that referenced this issue Feb 28, 2024
@rolandshoemaker @cagedmantis
[release-branch.go1.21] html/template: escape additional tokens in Ma…
3643147 
…rshalJSON errors

Escape "</script" and "<!--" in errors returned from MarshalJSON errors
when attempting to marshal types in script blocks. This prevents any
user controlled content from prematurely terminating the script block.

Updates #65697
Fixes #65968

Change-Id: Icf0e26c54ea7d9c1deed0bff11b6506c99ddef1b
Reviewed-on: https://go-review.googlesource.com/c/go/+/564196
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Damien Neil <dneil@google.com>
(cherry picked from commit ccbc725)
Reviewed-on: https://go-review.googlesource.com/c/go/+/567515
Reviewed-by: Carlos Amedee <carlos@golang.org>
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