On Darwin, building a malicious package that uses cgo could cause arbitrary code execution when using the Apple linker due to passing "-l to_library " in a "#cgo LDFLAGS" directive. The Apple linker recombines the separated arguments "-l" and "to_library" into "-lto_library", which loads an arbitrary LTO plugin dynamic library at link time. The go command now disallows "-l" followed by "to_library" in "#cgo LDFLAGS", rejects "-lazy_library", "-lazy_framework", "-load_hidden", "-library", and "-library-path", and checks recombined "-l" arguments against disallowed linker flags and patterns.
{
"binaries": [
{
"binary_name": "golang-1.8",
"binary_version": "1.8.3-2ubuntu1.18.04.1"
},
{
"binary_name": "golang-1.8-go",
"binary_version": "1.8.3-2ubuntu1.18.04.1"
},
{
"binary_name": "golang-1.8-go-shared-dev",
"binary_version": "1.8.3-2ubuntu1.18.04.1"
},
{
"binary_name": "golang-1.8-src",
"binary_version": "1.8.3-2ubuntu1.18.04.1"
},
{
"binary_name": "libgolang-1.8-std1",
"binary_version": "1.8.3-2ubuntu1.18.04.1"
}
]
}