Improper handling of non-optional LDFLAGS in go command with cgo in cmd/go
CVE-2023-29404

9.8CRITICAL

Key Information:

Vendor

Go Toolchain

Status
Cmd/go
Vendor
CVE Published:
8 June 2023

What is CVE-2023-29404?

A vulnerability exists in the Go command that may allow arbitrary code execution during build time when using cgo. This can occur when running commands like 'go get' on untrusted or malicious modules. The issue arises from the mishandling of linker flags indicated through the '#cgo LDFLAGS' directive. Several non-optional flags are incorrectly treated as optional, which opens the door for disallowed flags to bypass LDFLAGS sanitization, impacting both gc and gccgo compilers.

Affected Version(s)

cmd/go 0 < 1.19.10

cmd/go 1.20.0-0 < 1.20.5

References

https://go.dev/issue/60305
https://go.dev/cl/501225
https://groups.google.com/g/golang-announce/c/q5135a9d924...

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Juho Nurminen of Mattermost
.