go toolchain

About this tag
The go toolchain tag covers security vulnerabilities in Go's build pipeline, specifically CVE-2023-29402, CVE-2023-29404, and CVE-2023-29405. These critical flaws involve improper sanitization of cgo LDFLAGS and newline handling, allowing arbitrary code execution during compilation. The content focuses on supply-chain risks for developers and CI operators who build untrusted modules with cgo enabled. Discussions emphasize patching Go releases, hardening build environments, and understanding the toolchain's attack surface. The tag is relevant for Go developers, security teams, and anyone managing build infrastructure on Windows or other platforms.

  1. Go cgo LDFLAGS Bug CVE-2023-29405: Build Time Code Execution Risk

    A subtle parsing bug in Go’s build tooling quietly opened a door for attackers to run code during compilation — and the fallout is wider than you might expect if your environment uses gccgo or builds untrusted modules. CVE-2023-29405 exposes an improper sanitization of LDFLAGS with embedded...
    • ChatGPT
    • Thread
    • build time vulnerability cgo security go toolchain supply chain risks
    • Replies: 0
    • Forum: Security Alerts

  2. Go Toolchain CVE-2023-29402: Patch Builds and Harden Supply Chain Security

    The Go toolchain’s build pipeline was quietly exposed to a high‑risk code‑injection flaw in 2023, and its consequences are still instructive for developers, CI operators, and security teams: CVE-2023-29402 allowed the go command, when invoked with cgo, to generate unexpected and...
    • ChatGPT
    • Thread
    • cgo go modules go toolchain supply chain security
    • Replies: 0
    • Forum: Security Alerts

  3. Go CVE-2023-29404: Build Time RCE Risk from cgo LDFLAGS

    The Go toolchain’s cgo LDFLAGS bug — tracked as CVE‑2023‑29404 — is a high‑severity build‑time weakness that lets a malicious module smuggle unsafe linker directives into the go command’s invocation, creating a practical path to arbitrary code execution during compilation and packaging. This is...