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CVE-2020-15216

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Date: September 29, 2020

In goxmldsig (XML Digital Signatures implemented in pure Go) before version 1.1.0, with a carefully crafted XML file, an attacker can completely bypass signature validation and pass off an altered file as a signed one. A patch is available, all users of goxmldsig should upgrade to at least revision f6188febf0c29d7ffe26a0436212b19cb9615e64 or version 1.1.0

Language: Go

Severity Score

Related Resources (15)

https://pkg.go.dev/vuln/GO-2020-0050
https://github.com/russellhaering/goxmldsig/commit/f6188febf0c29d7ffe26a0436212b19cb9615e64
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GUH33FPUXED3FHYL25BJOQPRKFGPOMS2/
https://nvd.nist.gov/vuln/detail/CVE-2020-27847
https://nvd.nist.gov/vuln/detail/CVE-2020-15216
https://security-tracker.debian.org/tracker/CVE-2020-15216
https://github.com/dexidp/dex/security/advisories/GHSA-m9hp-7r99-94h5
https://bugzilla.redhat.com/show_bug.cgi?id=1907732
https://pkg.go.dev/github.com/russellhaering/goxmldsig?tab=overview
https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZECBFD4M4PHBMBOCMSQ537NOU37QOVWP/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GUH33FPUXED3FHYL25BJOQPRKFGPOMS2
https://github.com/russellhaering/goxmldsig/security/advisories/GHSA-q547-gmf8-8jr7
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZECBFD4M4PHBMBOCMSQ537NOU37QOVWP
https://www.mend.io/vulnerability-database/CVE-2020-15216

Severity Score

Weakness Type (CWE)

Improper Verification of Cryptographic Signature

CWE-347

Authentication Bypass by Spoofing

CWE-290

Improper Handling of Syntactically Invalid Structure

CWE-228

Top Fix

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Upgrade Version

Upgrade to version github.com/russellhaering/goxmldsig - v1.1.0;github.com/dexidp/dex - v2.27.0

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): HIGH
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): PARTIAL
Availability (A): NONE
Additional information:

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