Bug 1180024 – VUL-0: CVE-2020-29511: go1.14,go1.15: The encoding/xml package in Go (all versions) does not correctly preserve the semantics of element namespace prefixes during tokenization round-trips, which allows an attacker to craft inputs that behav

Bug 1180024 - (CVE-2020-29511) VUL-0: CVE-2020-29511: go1.14,go1.15: The encoding/xml package in Go (all versions) does not correctly preserve the semantics of element namespace prefixes during tokenization round-trips, which allows an attacker to craft inputs that behav

(CVE-2020-29511)
Summary:	VUL-0: CVE-2020-29511: go1.14,go1.15: The encoding/xml package in Go (all ver...

Status:	RESOLVED WONTFIX

Classification:	Novell Products
Product:	SUSE Security Incidents
Classification:	Novell Products
Component:	Incidents
Version:	unspecified
Hardware:	Other Other

Priority:	P3 - Medium Severity: Minor
Target Milestone:	---
Assigned To:	Security Team bot
QA Contact:	Security Team bot

URL:	https://smash.suse.de/issue/273375/
Whiteboard:	CVSSv3.1:SUSE:CVE-2020-29511:7.5:(AV:...
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Reported:	2020-12-15 06:48 UTC by Marcus Meissner
Modified:	2021-01-20 09:49 UTC (History)
CC List:	2 users (show)

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Found By:	Security Response Team
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Description Marcus Meissner 2020-12-15 06:48:18 UTC

CVE-2020-29511

The encoding/xml package in Go (all versions) does not correctly preserve the
semantics of element namespace prefixes during tokenization round-trips, which
allows an attacker to craft inputs that behave in conflicting ways during
different stages of processing in affected downstream applications.

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-29511
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-29511
https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-elements.md

Comment 1 Wolfgang Frisch 2021-01-20 09:49:18 UTC

Upstream golang declared this bug as WONTFIX [1].
Affected users can workaround the vulnerability by using Mattermost's xml-roundtrip-validator [2].

[1] https://github.com/golang/go/issues/43168
[2] https://github.com/mattermost/xml-roundtrip-validator