dev: add: pos-944: snyk and govuln integration (#578)

* dev: add: pos-944 security ci and readme * dev: add: pos-944 remove linters as this is included already in build ci * dev: chg: pos-947 dependencies upgrade to solve snyk security issues * dev: chg: update security-ci * dev: chg: remove linter to allow replacements for security issues * dev: add: pos-944 verify path when updating metrics from config * dev: add: pos-944 fix linter * dev: add: pos-944 add .snyk policy file / fix snyk code vulnerabilities * dev: fix: pos-944 import common package / gitignore snyk dccache file * dev: fix: pos-944 verify canonical path for crashers * dev: fix: pos-944 linter * dev: add: pos-976 add govuln check * dev: add: pos-976 test upload with permissions * dev: add: pos-976 remove duplicated upload * dev: add: pos-976 report upload * dev: add: pos-976 remove upload * dev: fix: pos-944 fix govuln action * dev: fix: pos-944 move govulncheck to security-ci * dev: fix: pos-944 bump golvun action and golang versions * dev: fix: pos-944 remove persmissions and fix conflicts * dev: chg: restore err msg * dev: chg: remove duplicated function * dev: chg: sort import * dev: chg: fix linter * dev: add: use common VerifyCrasher function to avoid duplications / replace deprecated ioutils.ReadFile * dev: fix: typo
2026-07-25 22:26:42 +00:00 · 2022-12-06 10:53:55 +01:00 · 2022-12-06 10:53:55 +01:00 · 50a778207e
commit 50a778207e
parent ba5822543c
19 changed files with 251 additions and 233 deletions
--- a/.github/workflows/security-ci.yml
+++ b/.github/workflows/security-ci.yml
@ -0,0 +1,64 @@
+name: Security CI
+on: [push, pull_request]
+
+jobs:
+  snyk:
+    name: Snyk and Publish
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Source
+        uses: actions/checkout@master
+      - name: Run Snyk to check for vulnerabilities
+        uses: snyk/actions/golang@master
+        continue-on-error: true
+        env:
+          SNYK_TOKEN: ${{ secrets.SNYK_TOKEN }}
+        with:
+          args: --org=${{ secrets.SNYK_ORG }} --severity-threshold=medium --sarif-file-output=snyk.sarif
+      - name: Upload result to GitHub Code Scanning
+        uses: github/codeql-action/upload-sarif@v2
+        with:
+          sarif_file: snyk.sarif
+
+  snyk-code:
+    name: Snyk Code and Publish
+    runs-on: ubuntu-latest
+    continue-on-error: true
+    steps:
+      - name: Checkout Source
+        uses: actions/checkout@master
+      - name: Run Snyk SAST to check for code vulnerabilities
+        uses: snyk/actions/golang@master
+        continue-on-error: true
+        env:
+          SNYK_TOKEN: ${{ secrets.SNYK_TOKEN }}
+        with:
+          args: --org=${{ secrets.SNYK_ORG }} --sarif-file-output=snyk.sarif
+          command: code test
+      - name: Upload result to GitHub Code Scanning
+        uses: github/codeql-action/upload-sarif@v2
+        with:
+          sarif_file: snyk.sarif
+
+  govuln:
+    name: Run govuln check and Publish
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Running govulncheck
+        uses: Templum/govulncheck-action@v0.0.8
+        continue-on-error: true
+        env:
+          DEBUG: "true"
+        with:
+          go-version: 1.19
+          vulncheck-version: latest
+          package: ./...
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          fail-on-vuln: true
+
+      - name: Upload govulncheck report
+        uses: actions/upload-artifact@v3
+        with:
+          name: raw-report
+          path: raw-report.json
--- a/.gitignore
+++ b/.gitignore
@ -54,4 +54,6 @@ profile.cov

 dist

+.dccache
+
 *.csv
--- a/.golangci.yml
+++ b/.golangci.yml
@ -30,7 +30,7 @@ linters:
    - gocognit
    - gofmt
    # - gomnd
-    - gomoddirectives
+    # - gomoddirectives
    - gosec
    - makezero
    - nestif
@ -65,10 +65,10 @@ linters-settings:

  goimports:
    local-prefixes: github.com/ethereum/go-ethereum
-  
+
  nestif:
    min-complexity: 5
-  
+
  prealloc:
    for-loops: true

@ -79,7 +79,7 @@ linters-settings:
    # By default list of stable checks is used.
    enabled-checks:
      - badLock
-      - filepathJoin	
+      - filepathJoin
      - sortSlice
      - sprintfQuotedString
      - syncMapLoadAndDelete
@ -185,4 +185,4 @@ issues:
  max-issues-per-linter: 0
  max-same-issues: 0
  #new: true
-  new-from-rev: origin/master
+  new-from-rev: origin/master
--- a/.snyk
+++ b/.snyk
@ -0,0 +1,37 @@
+# Snyk (https://snyk.io) policy file, patches or ignores known vulnerabilities.
+version: v1.25.0
+# ignores vulnerabilities until expiry date; change duration by modifying expiry date
+ignore:
+  'snyk:lic:golang:github.com:karalabe:usb:LGPL-3.0':
+    - '*':
+        reason: 'As open source org, we have no issues with licenses'
+        created: 2022-11-11T08:06:37.028Z
+  'snyk:lic:golang:github.com:mitchellh:cli:MPL-2.0':
+    - '*':
+        reason: 'As open source org, we have no issues with licenses'
+        created: 2022-11-11T08:07:42.661Z
+  'snyk:lic:golang:github.com:hashicorp:hcl:v2:MPL-2.0':
+    - '*':
+        reason: 'As open source org, we have no issues with licenses'
+        created: 2022-11-11T08:09:08.112Z
+  'snyk:lic:golang:github.com:hashicorp:go-multierror:MPL-2.0':
+    - '*':
+        reason: 'As open source org, we have no issues with licenses'
+        created: 2022-11-11T08:09:14.673Z
+  'snyk:lic:golang:github.com:hashicorp:go-bexpr:MPL-2.0':
+    - '*':
+        reason: 'As open source org, we have no issues with licenses'
+        created: 2022-11-11T08:09:21.843Z
+  'snyk:lic:golang:github.com:hashicorp:errwrap:MPL-2.0':
+    - '*':
+        reason: 'As open source org, we have no issues with licenses'
+        created: 2022-11-11T08:09:28.257Z
+  'snyk:lic:golang:github.com:ethereum:go-ethereum:LGPL-3.0':
+    - '*':
+        reason: 'As open source org, we have no issues with licenses'
+        created: 2022-11-11T08:09:35.273Z
+  'snyk:lic:golang:github.com:maticnetwork:polyproto:GPL-3.0':
+    - '*':
+        reason: 'As open source org, we have no issues with licenses'
+        created: 2022-11-11T08:09:41.635Z
+patch: {}
--- a/SECURITY.md
+++ b/SECURITY.md
@ -1,175 +1,14 @@
-# Security Policy
+# Polygon Technology Security Information

-## Supported Versions
+## Link to vulnerability disclosure details (Bug Bounty)
+- Websites and Applications: https://hackerone.com/polygon-technology
+- Smart Contracts: https://immunefi.com/bounty/polygon

-Please see [Releases](https://github.com/ethereum/go-ethereum/releases). We recommend using the [most recently released version](https://github.com/ethereum/go-ethereum/releases/latest).
+## Languages that our team speaks and understands.
+Preferred-Languages: en

-## Audit reports
+## Security-related job openings at Polygon.
+https://polygon.technology/careers

-Audit reports are published in the `docs` folder: https://github.com/ethereum/go-ethereum/tree/master/docs/audits 
-
-| Scope | Date | Report Link |
-| ------- | ------- | ----------- |
-| `geth` | 20170425 | [pdf](https://github.com/ethereum/go-ethereum/blob/master/docs/audits/2017-04-25_Geth-audit_Truesec.pdf) |
-| `clef` | 20180914 | [pdf](https://github.com/ethereum/go-ethereum/blob/master/docs/audits/2018-09-14_Clef-audit_NCC.pdf) |
-| `Discv5` | 20191015 | [pdf](https://github.com/ethereum/go-ethereum/blob/master/docs/audits/2019-10-15_Discv5_audit_LeastAuthority.pdf) |
-| `Discv5` | 20200124 | [pdf](https://github.com/ethereum/go-ethereum/blob/master/docs/audits/2020-01-24_DiscV5_audit_Cure53.pdf) |
-
-## Reporting a Vulnerability
-
-**Please do not file a public ticket** mentioning the vulnerability.
-
-To find out how to disclose a vulnerability in Ethereum visit [https://bounty.ethereum.org](https://bounty.ethereum.org) or email bounty@ethereum.org. Please read the [disclosure page](https://github.com/ethereum/go-ethereum/security/advisories?state=published) for more information about publicly disclosed security vulnerabilities.
-
-Use the built-in `geth version-check` feature to check whether the software is affected by any known vulnerability. This command will fetch the latest [`vulnerabilities.json`](https://geth.ethereum.org/docs/vulnerabilities/vulnerabilities.json) file which contains known security vulnerabilities concerning `geth`, and cross-check the data against its own version number.
-
-The following key may be used to communicate sensitive information to developers.
-
-Fingerprint: `AE96 ED96 9E47 9B00 84F3 E17F E88D 3334 FA5F 6A0A`
-
-```
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-PtwCMZUJ3kc/skOrs6bOI19iBNaEoNX5Dllm7UHjOgWNDQkcCuOCxucKano=
-=arte
-----END PGP PUBLIC KEY BLOCK------
-```
+## Polygon security contact details
+security@polygon.technology
--- a/build/ci.go
+++ b/build/ci.go
@ -24,19 +24,18 @@ Usage: go run build/ci.go <command> <command flags/arguments>

 Available commands are:

-   install    [ -arch architecture ] [ -cc compiler ] [ packages... ]                          -- builds packages and executables
-   test       [ -coverage ] [ packages... ]                                                    -- runs the tests
-   lint                                                                                        -- runs certain pre-selected linters
-   archive    [ -arch architecture ] [ -type zip|tar ] [ -signer key-envvar ] [ -signify key-envvar ] [ -upload dest ] -- archives build artifacts
-   importkeys                                                                                  -- imports signing keys from env
-   debsrc     [ -signer key-id ] [ -upload dest ]                                              -- creates a debian source package
-   nsis                                                                                        -- creates a Windows NSIS installer
-   aar        [ -local ] [ -sign key-id ] [-deploy repo] [ -upload dest ]                      -- creates an Android archive
-   xcode      [ -local ] [ -sign key-id ] [-deploy repo] [ -upload dest ]                      -- creates an iOS XCode framework
-   purge      [ -store blobstore ] [ -days threshold ]                                         -- purges old archives from the blobstore
+	install    [ -arch architecture ] [ -cc compiler ] [ packages... ]                          -- builds packages and executables
+	test       [ -coverage ] [ packages... ]                                                    -- runs the tests
+	lint                                                                                        -- runs certain pre-selected linters
+	archive    [ -arch architecture ] [ -type zip|tar ] [ -signer key-envvar ] [ -signify key-envvar ] [ -upload dest ] -- archives build artifacts
+	importkeys                                                                                  -- imports signing keys from env
+	debsrc     [ -signer key-id ] [ -upload dest ]                                              -- creates a debian source package
+	nsis                                                                                        -- creates a Windows NSIS installer
+	aar        [ -local ] [ -sign key-id ] [-deploy repo] [ -upload dest ]                      -- creates an Android archive
+	xcode      [ -local ] [ -sign key-id ] [-deploy repo] [ -upload dest ]                      -- creates an iOS XCode framework
+	purge      [ -store blobstore ] [ -days threshold ]                                         -- purges old archives from the blobstore

 For all commands, -n prevents execution of external programs (dry run mode).
-
 */
 package main

@ -59,6 +58,7 @@ import (
 	"time"

 	"github.com/cespare/cp"
+	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/crypto/signify"
 	"github.com/ethereum/go-ethereum/internal/build"
 	"github.com/ethereum/go-ethereum/params"
@ -674,21 +674,27 @@ func doDebianSource(cmdline []string) {
 			meta := newDebMetadata(distro, goboot, *signer, env, now, pkg.Name, pkg.Version, pkg.Executables)
 			pkgdir := stageDebianSource(*workdir, meta)

+			canonicalPath, err := common.VerifyPath(pkgdir)
+			if err != nil {
+				fmt.Println("path not verified: " + err.Error())
+				return
+			}
+
 			// Add Go source code
-			if err := build.ExtractArchive(gobundle, pkgdir); err != nil {
+			if err := build.ExtractArchive(gobundle, canonicalPath); err != nil {
 				log.Fatalf("Failed to extract Go sources: %v", err)
 			}
-			if err := os.Rename(filepath.Join(pkgdir, "go"), filepath.Join(pkgdir, ".go")); err != nil {
+			if err := os.Rename(filepath.Join(canonicalPath, "go"), filepath.Join(canonicalPath, ".go")); err != nil {
 				log.Fatalf("Failed to rename Go source folder: %v", err)
 			}
 			// Add all dependency modules in compressed form
-			os.MkdirAll(filepath.Join(pkgdir, ".mod", "cache"), 0755)
-			if err := cp.CopyAll(filepath.Join(pkgdir, ".mod", "cache", "download"), filepath.Join(*workdir, "modgopath", "pkg", "mod", "cache", "download")); err != nil {
+			os.MkdirAll(filepath.Join(canonicalPath, ".mod", "cache"), 0755)
+			if err := cp.CopyAll(filepath.Join(canonicalPath, ".mod", "cache", "download"), filepath.Join(*workdir, "modgopath", "pkg", "mod", "cache", "download")); err != nil {
 				log.Fatalf("Failed to copy Go module dependencies: %v", err)
 			}
 			// Run the packaging and upload to the PPA
 			debuild := exec.Command("debuild", "-S", "-sa", "-us", "-uc", "-d", "-Zxz", "-nc")
-			debuild.Dir = pkgdir
+			debuild.Dir = canonicalPath
 			build.MustRun(debuild)

 			var (
--- a/cmd/faucet/faucet.go
+++ b/cmd/faucet/faucet.go
@ -162,9 +162,16 @@ func main() {
 		}
 	}
 	// Load up the account key and decrypt its password
-	blob, err := ioutil.ReadFile(*accPassFlag)
+
+	canonicalPath, err := common.VerifyPath(*accPassFlag)
 	if err != nil {
-		log.Crit("Failed to read account password contents", "file", *accPassFlag, "err", err)
+		fmt.Println("path not verified: " + err.Error())
+		return
+	}
+
+	blob, err := ioutil.ReadFile(canonicalPath)
+	if err != nil {
+		log.Crit("Failed to read account password contents", "file", canonicalPath, "err", err)
 	}
 	pass := strings.TrimSuffix(string(blob), "\n")

--- a/common/path.go
+++ b/common/path.go
@ -47,3 +47,32 @@ func AbsolutePath(datadir string, filename string) string {
 	}
 	return filepath.Join(datadir, filename)
 }
+
+// VerifyPath sanitizes the path to avoid Path Traversal vulnerability
+func VerifyPath(path string) (string, error) {
+	c := filepath.Clean(path)
+
+	r, err := filepath.EvalSymlinks(c)
+	if err != nil {
+		return c, fmt.Errorf("unsafe or invalid path specified: %s", path)
+	} else {
+		return r, nil
+	}
+}
+
+// VerifyCrasher sanitizes the path to avoid Path Traversal vulnerability and reads the file from that path, returning its content
+func VerifyCrasher(crasher string) []byte {
+	canonicalPath, err := VerifyPath(crasher)
+	if err != nil {
+		fmt.Println("path not verified: " + err.Error())
+		return nil
+	}
+
+	data, err := os.ReadFile(canonicalPath)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "error loading crasher %v: %v", canonicalPath, err)
+		os.Exit(1)
+	}
+
+	return data
+}
--- a/go.mod
+++ b/go.mod
@ -71,7 +71,7 @@ require (
 	golang.org/x/crypto v0.0.0-20220507011949-2cf3adece122
 	golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4
 	golang.org/x/sys v0.0.0-20220728004956-3c1f35247d10
-	golang.org/x/text v0.3.7
+	golang.org/x/text v0.3.8
 	golang.org/x/time v0.0.0-20210220033141-f8bda1e9f3ba
 	golang.org/x/tools v0.1.12
 	gonum.org/v1/gonum v0.11.0
@ -141,3 +141,5 @@ require (
 	gopkg.in/yaml.v2 v2.4.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )
+
+replace github.com/Masterminds/goutils => github.com/Masterminds/goutils v1.1.1
--- a/go.sum
+++ b/go.sum
@ -31,8 +31,8 @@ github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym
 github.com/DATA-DOG/go-sqlmock v1.3.3/go.mod h1:f/Ixk793poVmq4qj/V1dPUg2JEAKC73Q5eFN3EC/SaM=
 github.com/JekaMas/go-grpc-net-conn v0.0.0-20220708155319-6aff21f2d13d h1:RO27lgfZF8s9lZ3pWyzc0gCE0RZC+6/PXbRjAa0CNp8=
 github.com/JekaMas/go-grpc-net-conn v0.0.0-20220708155319-6aff21f2d13d/go.mod h1:romz7UPgSYhfJkKOalzEEyV6sWtt/eAEm0nX2aOrod0=
-github.com/Masterminds/goutils v1.1.0 h1:zukEsf/1JZwCMgHiK3GZftabmxiCw4apj3a28RPBiVg=
-github.com/Masterminds/goutils v1.1.0/go.mod h1:8cTjp+g8YejhMuvIA5y2vz3BpJxksy863GQaJW2MFNU=
+github.com/Masterminds/goutils v1.1.1 h1:5nUrii3FMTL5diU80unEVvNevw1nH4+ZV4DSLVJLSYI=
+github.com/Masterminds/goutils v1.1.1/go.mod h1:8cTjp+g8YejhMuvIA5y2vz3BpJxksy863GQaJW2MFNU=
 github.com/Masterminds/semver v1.5.0 h1:H65muMkzWKEuNDnfl9d70GUjFniHKHRbFPGBuZ3QEww=
 github.com/Masterminds/semver v1.5.0/go.mod h1:MB6lktGJrhw8PrUyiEoblNEGEQ+RzHPF078ddwwvV3Y=
 github.com/Masterminds/sprig v2.22.0+incompatible h1:z4yfnGrZ7netVz+0EDJ0Wi+5VZCSYp4Z0m2dk6cEM60=
@ -667,8 +667,9 @@ golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.4/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.5/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
-golang.org/x/text v0.3.7 h1:olpwvP2KacW1ZWvsR7uQhoyTYvKAupfQrRGBFM352Gk=
 golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
+golang.org/x/text v0.3.8 h1:nAL+RVCQ9uMn3vJZbV+MRnydTJFPf8qqY42YiA6MrqY=
+golang.org/x/text v0.3.8/go.mod h1:E6s5w1FMmriuDzIBO73fBruAKo1PCIq6d2Q6DHfQ8WQ=
 golang.org/x/time v0.0.0-20181108054448-85acf8d2951c/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20190308202827-9d24e82272b4/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20201208040808-7e3f01d25324/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
--- a/metrics/metrics.go
+++ b/metrics/metrics.go
@ -6,11 +6,14 @@
 package metrics

 import (
+	"fmt"
 	"os"
 	"runtime"
 	"strings"
 	"time"

+	"github.com/ethereum/go-ethereum/common"
+
 	"github.com/BurntSushi/toml"
 )

@ -71,7 +74,13 @@ func init() {
 func updateMetricsFromConfig(path string) {
 	// Don't act upon any errors here. They're already taken into
 	// consideration when the toml config file will be parsed in the cli.
-	data, err := os.ReadFile(path)
+	canonicalPath, err := common.VerifyPath(path)
+	if err != nil {
+		fmt.Println("path not verified: " + err.Error())
+		return
+	}
+
+	data, err := os.ReadFile(canonicalPath)
 	tomlData := string(data)

 	if err != nil {
--- a/rlp/rlpgen/main.go
+++ b/rlp/rlpgen/main.go
@ -26,6 +26,8 @@ import (
 	"os"

 	"golang.org/x/tools/go/packages"
+
+	"github.com/ethereum/go-ethereum/common"
 )

 const pathOfPackageRLP = "github.com/ethereum/go-ethereum/rlp"
@ -52,8 +54,15 @@ func main() {
 	}
 	if *output == "-" {
 		os.Stdout.Write(code)
-	} else if err := ioutil.WriteFile(*output, code, 0644); err != nil {
-		fatal(err)
+	} else {
+		canonicalPath, err := common.VerifyPath(*output)
+		if err != nil {
+			fmt.Println("path not verified: " + err.Error())
+			fatal(err)
+		}
+		if err := ioutil.WriteFile(canonicalPath, code, 0600); err != nil {
+			fatal(err)
+		}
 	}
 }

--- a/scripts/getconfig.go
+++ b/scripts/getconfig.go
@ -11,6 +11,7 @@ import (

 	"github.com/pelletier/go-toml"

+	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/internal/cli/server"
 )

@ -514,7 +515,13 @@ func commentFlags(path string, updatedArgs []string) {

 	ignoreLineFlag := false

-	input, err := os.ReadFile(path)
+	canonicalPath, err := common.VerifyPath(path)
+	if err != nil {
+		fmt.Println("path not verified: " + err.Error())
+		return
+	}
+
+	input, err := os.ReadFile(canonicalPath)
 	if err != nil {
 		log.Fatalln(err)
 	}
@ -594,7 +601,7 @@ func commentFlags(path string, updatedArgs []string) {

 	output := strings.Join(newLines, "\n")

-	err = os.WriteFile(path, []byte(output), 0600)
+	err = os.WriteFile(canonicalPath, []byte(output), 0600)
 	if err != nil {
 		log.Fatalln(err)
 	}
--- a/tests/fuzzers/difficulty/debug/main.go
+++ b/tests/fuzzers/difficulty/debug/main.go
@ -2,9 +2,9 @@ package main

 import (
 	"fmt"
-	"io/ioutil"
 	"os"

+	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/tests/fuzzers/difficulty"
 )

@ -14,10 +14,11 @@ func main() {
 		os.Exit(1)
 	}
 	crasher := os.Args[1]
-	data, err := ioutil.ReadFile(crasher)
-	if err != nil {
-		fmt.Fprintf(os.Stderr, "error loading crasher %v: %v", crasher, err)
-		os.Exit(1)
+
+	data := common.VerifyCrasher(crasher)
+	if data == nil {
+		return
 	}
+
 	difficulty.Fuzz(data)
 }
--- a/tests/fuzzers/les/debug/main.go
+++ b/tests/fuzzers/les/debug/main.go
@ -18,9 +18,9 @@ package main

 import (
 	"fmt"
-	"io/ioutil"
 	"os"

+	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/tests/fuzzers/les"
 )

@ -32,10 +32,11 @@ func main() {
 		os.Exit(1)
 	}
 	crasher := os.Args[1]
-	data, err := ioutil.ReadFile(crasher)
-	if err != nil {
-		fmt.Fprintf(os.Stderr, "error loading crasher %v: %v", crasher, err)
-		os.Exit(1)
+
+	data := common.VerifyCrasher(crasher)
+	if data == nil {
+		return
 	}
+
 	les.Fuzz(data)
 }
--- a/tests/fuzzers/rangeproof/debug/main.go
+++ b/tests/fuzzers/rangeproof/debug/main.go
@ -18,9 +18,9 @@ package main

 import (
 	"fmt"
-	"io/ioutil"
 	"os"

+	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/tests/fuzzers/rangeproof"
 )

@ -32,10 +32,11 @@ func main() {
 		os.Exit(1)
 	}
 	crasher := os.Args[1]
-	data, err := ioutil.ReadFile(crasher)
-	if err != nil {
-		fmt.Fprintf(os.Stderr, "error loading crasher %v: %v", crasher, err)
-		os.Exit(1)
+
+	data := common.VerifyCrasher(crasher)
+	if data == nil {
+		return
 	}
+
 	rangeproof.Fuzz(data)
 }
--- a/tests/fuzzers/snap/debug/main.go
+++ b/tests/fuzzers/snap/debug/main.go
@ -18,9 +18,9 @@ package main

 import (
 	"fmt"
-	"io/ioutil"
 	"os"

+	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/tests/fuzzers/snap"
 )

@ -30,10 +30,11 @@ func main() {
 		os.Exit(1)
 	}
 	crasher := os.Args[1]
-	data, err := ioutil.ReadFile(crasher)
-	if err != nil {
-		fmt.Fprintf(os.Stderr, "error loading crasher %v: %v", crasher, err)
-		os.Exit(1)
+
+	data := common.VerifyCrasher(crasher)
+	if data == nil {
+		return
 	}
+
 	snap.FuzzTrieNodes(data)
 }
--- a/tests/fuzzers/stacktrie/debug/main.go
+++ b/tests/fuzzers/stacktrie/debug/main.go
@ -2,9 +2,9 @@ package main

 import (
 	"fmt"
-	"io/ioutil"
 	"os"

+	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/tests/fuzzers/stacktrie"
 )

@ -14,10 +14,11 @@ func main() {
 		os.Exit(1)
 	}
 	crasher := os.Args[1]
-	data, err := ioutil.ReadFile(crasher)
-	if err != nil {
-		fmt.Fprintf(os.Stderr, "error loading crasher %v: %v", crasher, err)
-		os.Exit(1)
+
+	data := common.VerifyCrasher(crasher)
+	if data == nil {
+		return
 	}
+
 	stacktrie.Debug(data)
 }
--- a/tests/fuzzers/vflux/debug/main.go
+++ b/tests/fuzzers/vflux/debug/main.go
@ -18,9 +18,9 @@ package main

 import (
 	"fmt"
-	"io/ioutil"
 	"os"

+	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/log"
 	"github.com/ethereum/go-ethereum/tests/fuzzers/vflux"
 )
@ -35,10 +35,11 @@ func main() {
 		os.Exit(1)
 	}
 	crasher := os.Args[1]
-	data, err := ioutil.ReadFile(crasher)
-	if err != nil {
-		fmt.Fprintf(os.Stderr, "error loading crasher %v: %v", crasher, err)
-		os.Exit(1)
+
+	data := common.VerifyCrasher(crasher)
+	if data == nil {
+		return
 	}
+
 	vflux.FuzzClientPool(data)
 }