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encoding/xml: infinite loop when using xml.NewTokenDecoder with a custom TokenReader [Go 1.16] #44915

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katiehockman opened this issue Mar 10, 2021 · 2 comments
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encoding/xml: infinite loop when using xml.NewTokenDecoder with a custom TokenReader [Go 1.16] #44915

katiehockman opened this issue Mar 10, 2021 · 2 comments
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CherryPickApproved Used during the release process for point releases FrozenDueToAge Security
Milestone
Go1.16.1

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@katiehockman
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The Decode, DecodeElement, and Skip methods of an xml.Decoder provided by xml.NewTokenDecoder may enter an infinite loop when operating on a custom xml.TokenReader which returns an EOF in the middle of an open XML element.

Thanks to Sam Whited for reporting this issue.
This issue is CVE-2021-27918.
@katiehockman katiehockman added Security CherryPickApproved Used during the release process for point releases labels Mar 10, 2021
@katiehockman katiehockman added this to the Go1.16.1 milestone Mar 10, 2021
@katiehockman
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Fixed by d86e53e

@katiehockman
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See #44913 for main issue

@golang golang locked and limited conversation to collaborators Mar 10, 2022
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CherryPickApproved Used during the release process for point releases FrozenDueToAge Security
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