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golang: net: incorrect parsing of extraneous zero characters at the beginning of an IP address octet

🗓️ 23 Feb 2022 12:47:14Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 5 Views

Go flaw misparses leading zeros in an address octet, potentially bypassing access controls.

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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8aarch64butane0.13.1-2.rhaos4.9.el8butane-0.13.1-2.rhaos4.9.el8.aarch64.rpm
Red Hat Enterprise Linux8ppc64lebutane0.13.1-2.rhaos4.9.el8butane-0.13.1-2.rhaos4.9.el8.ppc64le.rpm
Red Hat Enterprise Linux8s390xbutane0.13.1-2.rhaos4.9.el8butane-0.13.1-2.rhaos4.9.el8.s390x.rpm
Red Hat Enterprise Linux8x86_64butane0.13.1-2.rhaos4.9.el8butane-0.13.1-2.rhaos4.9.el8.x86_64.rpm
Red Hat Enterprise Linux8aarch64butane-debuginfo0.13.1-2.rhaos4.9.el8butane-debuginfo-0.13.1-2.rhaos4.9.el8.aarch64.rpm
Red Hat Enterprise Linux8ppc64lebutane-debuginfo0.13.1-2.rhaos4.9.el8butane-debuginfo-0.13.1-2.rhaos4.9.el8.ppc64le.rpm
Red Hat Enterprise Linux8s390xbutane-debuginfo0.13.1-2.rhaos4.9.el8butane-debuginfo-0.13.1-2.rhaos4.9.el8.s390x.rpm
Red Hat Enterprise Linux8x86_64butane-debuginfo0.13.1-2.rhaos4.9.el8butane-debuginfo-0.13.1-2.rhaos4.9.el8.x86_64.rpm
Red Hat Enterprise Linux8aarch64butane-debugsource0.13.1-2.rhaos4.9.el8butane-debugsource-0.13.1-2.rhaos4.9.el8.aarch64.rpm
Red Hat Enterprise Linux8ppc64lebutane-debugsource0.13.1-2.rhaos4.9.el8butane-debugsource-0.13.1-2.rhaos4.9.el8.ppc64le.rpm
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30 Jun 2026 03:18Current
7.1High risk
Vulners AI Score7.1
CVSS 25
CVSS 3.17.5
EPSS0.03775
CWE-20
Go language flawleading zeros octetaddress parsingaccess controls bypassconfidentiality integrity availability
5