GO-2024-2887

vendorUSosv

Unexpected behavior from Is methods for IPv4-mapped IPv6 addresses in net/netip

view advisory published 2024-06-04Licence: per source

The various Is methods (IsPrivate, IsLoopback, etc) did not work as expected for IPv4-mapped IPv6 addresses, returning false for addresses which would return true in their traditional IPv4 forms.

describes (1)

Related CVEs.

ID	severity	EPSS	exploitable	published
CVE-2024-24790US	critical9.8	1.95% (80th)	—	2024-06-05
The various Is methods (IsPrivate, IsLoopback, etc) did not work as expected for IPv4-mapped IPv6 addresses, returning false for addresses which would return true in their traditio…

references

External citations — patches, advisories, analysis.

https://go.dev/cl/590316FIX
https://go.dev/issue/67680REPORT
https://groups.google.com/g/golang-announce/c/XbxouI9gY7k/m/TuoGEhxIEwAJWEB

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