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html/template: improper handling of JavaScript whitespace #59721

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rolandshoemaker opened this issue Apr 19, 2023 · 5 comments
Closed

html/template: improper handling of JavaScript whitespace #59721

rolandshoemaker opened this issue Apr 19, 2023 · 5 comments
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FrozenDueToAge NeedsFix The path to resolution is known, but the work has not been done. release-blocker Security
Milestone
Go1.21

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@rolandshoemaker
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rolandshoemaker commented Apr 19, 2023 •
edited by dmitshur
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Not all valid JavaScript whitespace characters were considered to be whitespace. Templates containing whitespace characters outside of the character set "\t\n\f\r\u0020\u2028\u2029" in JavaScript contexts that also contain actions may not be properly sanitized during execution.

Thanks to Juho Nurminen of Mattermost for reporting this issue.

This is CVE-2023-24540 and Go issue https://go.dev/issue/59721.

/cc @golang/security and @golang/release
@prattmic prattmic added the NeedsFix The path to resolution is known, but the work has not been done. label Apr 21, 2023
@prattmic prattmic added this to the Go1.21 milestone Apr 21, 2023
@neild
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neild commented Apr 24, 2023

@gopherbot please open backport issues for this security fix

This was referenced Apr 24, 2023
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@gopherbot
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Backport issue(s) opened: #59813 (for 1.19), #59814 (for 1.20).

Remember to create the cherry-pick CL(s) as soon as the patch is submitted to master, according to https://go.dev/wiki/MinorReleases.

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Change https://go.dev/cl/491355 mentions this issue: [release-branch.go1.19] html/template: handle all JS whitespace characters

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Change https://go.dev/cl/491356 mentions this issue: [release-branch.go1.20] html/template: handle all JS whitespace characters

gopherbot pushed a commit that referenced this issue May 2, 2023
@rolandshoemaker @cagedmantis
[release-branch.go1.19] html/template: handle all JS whitespace chara…
ce7bd33 
…cters

Rather than just a small set. Character class as defined by \s [0].

Thanks to Juho Nurminen of Mattermost for reporting this.

For #59721
Fixes  #59813
Fixes CVE-2023-24540

[0] https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions/Character_Classes

Change-Id: I56d4fa1ef08125b417106ee7dbfb5b0923b901ba
Reviewed-on: https://team-review.git.corp.google.com/c/golang/go-private/+/1821459
Reviewed-by: Julie Qiu <julieqiu@google.com>
Run-TryBot: Roland Shoemaker <bracewell@google.com>
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-on: https://team-review.git.corp.google.com/c/golang/go-private/+/1851497
Run-TryBot: Damien Neil <dneil@google.com>
Reviewed-by: Roland Shoemaker <bracewell@google.com>
Reviewed-on: https://go-review.googlesource.com/c/go/+/491355
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Carlos Amedee <carlos@golang.org>
TryBot-Bypass: Carlos Amedee <carlos@golang.org>
Run-TryBot: Carlos Amedee <carlos@golang.org>
gopherbot pushed a commit that referenced this issue May 2, 2023
@rolandshoemaker @cagedmantis
[release-branch.go1.20] html/template: handle all JS whitespace chara…
4a28cad 
…cters

Rather than just a small set. Character class as defined by \s [0].

Thanks to Juho Nurminen of Mattermost for reporting this.

For #59721
Fixes #59814
Fixes CVE-2023-24540

[0] https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions/Character_Classes

Change-Id: I56d4fa1ef08125b417106ee7dbfb5b0923b901ba
Reviewed-on: https://team-review.git.corp.google.com/c/golang/go-private/+/1821459
Reviewed-by: Julie Qiu <julieqiu@google.com>
Run-TryBot: Roland Shoemaker <bracewell@google.com>
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-on: https://team-review.git.corp.google.com/c/golang/go-private/+/1851493
TryBot-Result: Security TryBots <security-trybots@go-security-trybots.iam.gserviceaccount.com>
Run-TryBot: Damien Neil <dneil@google.com>
Reviewed-by: Roland Shoemaker <bracewell@google.com>
Reviewed-on: https://go-review.googlesource.com/c/go/+/491356
Run-TryBot: Carlos Amedee <carlos@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
@cagedmantis cagedmantis changed the title security: fix CVE-2023-24540 html/template: improper handling of JavaScript whitespace May 2, 2023
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Change https://go.dev/cl/491616 mentions this issue: html/template: handle all JS whitespace characters

@zafs23 zafs23 mentioned this issue May 4, 2023
Merged
@g4s8 g4s8 mentioned this issue May 16, 2023
Merged
@Prajyot-Parab Prajyot-Parab mentioned this issue May 25, 2023
Merged
bradfitz pushed a commit to tailscale/go that referenced this issue May 25, 2023
@rolandshoemaker @bradfitz
[release-branch.go1.20] html/template: handle all JS whitespace chara…
0060b24 
…cters

Rather than just a small set. Character class as defined by \s [0].

Thanks to Juho Nurminen of Mattermost for reporting this.

For golang#59721
Fixes golang#59814
Fixes CVE-2023-24540

[0] https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions/Character_Classes

Change-Id: I56d4fa1ef08125b417106ee7dbfb5b0923b901ba
Reviewed-on: https://team-review.git.corp.google.com/c/golang/go-private/+/1821459
Reviewed-by: Julie Qiu <julieqiu@google.com>
Run-TryBot: Roland Shoemaker <bracewell@google.com>
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-on: https://team-review.git.corp.google.com/c/golang/go-private/+/1851493
TryBot-Result: Security TryBots <security-trybots@go-security-trybots.iam.gserviceaccount.com>
Run-TryBot: Damien Neil <dneil@google.com>
Reviewed-by: Roland Shoemaker <bracewell@google.com>
Reviewed-on: https://go-review.googlesource.com/c/go/+/491356
Run-TryBot: Carlos Amedee <carlos@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
bradfitz pushed a commit to tailscale/go that referenced this issue May 25, 2023
@rolandshoemaker @bradfitz
[release-branch.go1.20] html/template: handle all JS whitespace chara…
d6b99ca 
…cters

Rather than just a small set. Character class as defined by \s [0].

Thanks to Juho Nurminen of Mattermost for reporting this.

For golang#59721
Fixes golang#59814
Fixes CVE-2023-24540

[0] https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions/Character_Classes

Change-Id: I56d4fa1ef08125b417106ee7dbfb5b0923b901ba
Reviewed-on: https://team-review.git.corp.google.com/c/golang/go-private/+/1821459
Reviewed-by: Julie Qiu <julieqiu@google.com>
Run-TryBot: Roland Shoemaker <bracewell@google.com>
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-on: https://team-review.git.corp.google.com/c/golang/go-private/+/1851493
TryBot-Result: Security TryBots <security-trybots@go-security-trybots.iam.gserviceaccount.com>
Run-TryBot: Damien Neil <dneil@google.com>
Reviewed-by: Roland Shoemaker <bracewell@google.com>
Reviewed-on: https://go-review.googlesource.com/c/go/+/491356
Run-TryBot: Carlos Amedee <carlos@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
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