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CVE-2021-27918

Good to know:

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Date: March 10, 2021

encoding/xml in Go before 1.15.9 and 1.16.x before 1.16.1 has an infinite loop if a custom TokenReader (for xml.NewTokenDecoder) returns EOF in the middle of an element. This can occur in the Decode, DecodeElement, or Skip method.

Language: Go

Severity Score

Related Resources (11)

https://people.canonical.com/~ubuntu-security/cve/CVE-2021-27918
https://go.dev/issue/44913
https://nvd.nist.gov/vuln/detail/CVE-2021-27918
https://security.gentoo.org/glsa/202208-02
https://access.redhat.com/security/cve/CVE-2021-27918
https://go.dev/cl/300391
https://security.alpinelinux.org/vuln/CVE-2021-27918
https://groups.google.com/g/golang-announce/c/MfiLYjG-RAw
https://go.googlesource.com/go/+/d0b79e3513a29628f3599dc8860666b6eed75372
https://security-tracker.debian.org/tracker/CVE-2021-27918
https://www.mend.io/vulnerability-database/CVE-2021-27918

Severity Score

Weakness Type (CWE)

Loop with Unreachable Exit Condition ('Infinite Loop')

CWE-835

Top Fix

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Upgrade Version

Upgrade to version 1.15.9, 1.16.1

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CVSS v3.1

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

CVSS v2

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

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