CVE-2023-39323

Line directives ("//line") can be used to bypass the restrictions on "//go:cgo_" directives, allowing blocked linker and compiler flags to be passed during compilation. This can result in unexpected execution of arbitrary code when running "go build". The line directive requires the absolute path of the file in which the directive lives, which makes exploiting this issue significantly more complex.

• https://go.dev/cl/533215Patch
• https://go.dev/issue/63211Issue Tracking, Patch
• https://groups.google.com/g/golang-announce/c/XBa1oHDevAoMailing List, Release Notes
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CLB4TW7KALB3EEQWNWCN7OUIWWVWWCG2/Mailing List, Third Party Advisory
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KSEGD2IWKNUO3DWY4KQGUQM5BISRWHQE/Mailing List, Third Party Advisory
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XFOIBB4YFICHDM7IBOP7PWXW3FX4HLL2/Mailing List, Third Party Advisory
• https://pkg.go.dev/vuln/GO-2023-2095Vendor Advisory
• https://security.gentoo.org/glsa/202311-09Third Party Advisory
• https://security.netapp.com/advisory/ntap-20231020-0001/Third Party Advisory
• https://go.dev/cl/533215Patch
• https://go.dev/issue/63211Issue Tracking, Patch
• https://groups.google.com/g/golang-announce/c/XBa1oHDevAoMailing List, Release Notes
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CLB4TW7KALB3EEQWNWCN7OUIWWVWWCG2/Mailing List, Third Party Advisory
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KSEGD2IWKNUO3DWY4KQGUQM5BISRWHQE/Mailing List, Third Party Advisory
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XFOIBB4YFICHDM7IBOP7PWXW3FX4HLL2/Mailing List, Third Party Advisory
• https://pkg.go.dev/vuln/GO-2023-2095Vendor Advisory
• https://security.gentoo.org/glsa/202311-09Third Party Advisory
• https://security.netapp.com/advisory/ntap-20231020-0001/Third Party Advisory

Published

Oct 5, 2023

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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