Building a malicious package that uses "#cgo pkg-config:" directives could load untrusted pkg-config ".pc" files or inject unvalidated compiler and linker flags. The pkg-config flag allowlist previously permitted "--with-path=" and "--personality=", allowed "--define-variable=" values beginning with "=" or "$" (which can rewrite paths in system ".pc" files into sysroot-prefixed "-L=" or "-L$SYSROOT" linker search paths), and allowed package arguments ending in ".pc" or containing path separators or "..", which caused pkg-config to load local ".pc" files directly from the package directory. In addition, flags returned by "pkg-config --cflags" in cgoCPPFLAGS were not checked when determining whether internal linking is safe. The go command now disallows "--with-path=", "--personality=", leading "=" or "$" characters in "--define-variable=" values, and local ".pc" paths in "#cgo pkg-config:" directives, and inspects cgoCPPFLAGS when checking internal linking compatibility.
{
"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"
}
]
}