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os/exec: Cmd.{Run,Start} should fail if Cmd.Path is unset [1.18 backport] #53057

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gopherbot opened this issue May 24, 2022 · 4 comments
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os/exec: Cmd.{Run,Start} should fail if Cmd.Path is unset [1.18 backport] #53057

gopherbot opened this issue May 24, 2022 · 4 comments
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CherryPickApproved Used during the release process for point releases FrozenDueToAge Security
Milestone
Go1.18.3

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@gopherbot
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@rolandshoemaker requested issue #52574 to be considered for backport to the next 1.18 minor release.

@gopherbot please open backport issues, this is a minor security issue.
@gopherbot gopherbot added the CherryPickCandidate Used during the release process for point releases label May 24, 2022
@gopherbot gopherbot mentioned this issue May 24, 2022
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@gopherbot gopherbot added this to the Go1.18.3 milestone May 24, 2022
@toothrot toothrot added the CherryPickApproved Used during the release process for point releases label May 25, 2022
@toothrot
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Approved. This is a serious issue with no workaround. @rolandshoemaker Does this need security text?

@gopherbot gopherbot removed the CherryPickCandidate Used during the release process for point releases label May 25, 2022
@gopherbot
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Change https://go.dev/cl/408577 mentions this issue: [release-branch.go1.18] os/exec: return clear error for missing cmd.Path

@rolandshoemaker
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@toothrot Yup, will follow-up OOB.

@gopherbot
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Closed by merging 6c65a4a to release-branch.go1.18.

gopherbot pushed a commit that referenced this issue May 27, 2022
@rsc @toothrot
[release-branch.go1.18] os/exec: return clear error for missing cmd.Path
6c65a4a 
Following up on CL 403694, there is a bit of confusion about
when Path is and isn't set, along with now the exported Err field.
Catch the case where Path and Err (and lookPathErr) are all unset
and give a helpful error.

Updates #52574
Followup after #43724.

Fixes #53057
Fixes CVE-2022-30580

Change-Id: I03205172aef3801c3194f5098bdb93290c02b1b6
Reviewed-on: https://go-review.googlesource.com/c/go/+/403759
Reviewed-by: Bryan Mills <[email protected]>
Reviewed-by: Roland Shoemaker <[email protected]>
(cherry picked from commit 960ffa9)
Reviewed-on: https://go-review.googlesource.com/c/go/+/408577
TryBot-Result: Gopher Robot <[email protected]>
Run-TryBot: Roland Shoemaker <[email protected]>
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CherryPickApproved Used during the release process for point releases FrozenDueToAge Security
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Go1.18.3
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@toothrot @rolandshoemaker @bcmills @gopherbot