CVE-2020-28367 Arbitrary code execution via the go command with cgo in cmd/go

What is CVE-2020-28367?

CVE-2020-28367 is a high-severity code injection vulnerability in Golang Go, published on 18 Nov 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Code injection in the go command with cgo before Go 1.14.12 and Go 1.15.5 allows arbitrary code execution at build time via malicious gcc flags specified via a #cgo directive.

Weakness: CWE-94

Which versions are affected by CVE-2020-28367?

2 open source packages ship an affected version, including golang and toolchain. It affects 1 product.

Products include Golang Go.

How do I fix CVE-2020-28367?

Upgrade golang to a fixed version for your release line: 1.14.12 or 1.15.5.

Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.

Is CVE-2020-28367 being exploited?

There is no known exploitation of CVE-2020-28367 in the wild and no public exploit code.

Other vulnerabilities in Golang Go

• CVE-2020-0601 Microsoft Windows CryptoAPI Spoofing Exploited High 8.1
• CVE-2026-27143 Missing bound checks can lead to memory corruption in safe Go in cmd/compile Critical 9.8
• CVE-2024-24790 Unexpected behavior from Is methods for IPv4-mapped IPv6 addresses in net/netip Critical 9.8
• CVE-2023-39320 Arbitrary code execution via go.mod toolchain directive in cmd/go Critical 9.8
• CVE-2023-24540 Improper handling of JavaScript whitespace in html/template Critical 9.8

All Golang Go vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BIT-golang-2020-28367, DEBIAN-CVE-2020-28367, GHSA-827f-m9xx-4cfw, GO-2022-0476, UBUNTU-CVE-2020-28367.