CVE-2021-29923 Affecting go package, versions <1.17-r0


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.23% (62nd percentile)

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  • Snyk IDSNYK-ALPINE316-GO-2844256
  • published25 Nov 2021
  • disclosed7 Aug 2021

Introduced: 7 Aug 2021

CVE-2021-29923  (opens in a new tab)

How to fix?

Upgrade Alpine:3.16 go to version 1.17-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream go package and not the go package as distributed by Alpine. See How to fix? for Alpine:3.16 relevant fixed versions and status.

Go before 1.17 does not properly consider extraneous zero characters at the beginning of an IP address octet, which (in some situations) allows attackers to bypass access control that is based on IP addresses, because of unexpected octal interpretation. This affects net.ParseIP and net.ParseCIDR.

CVSS Scores

version 3.1