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cmd/geth: add test to verify regexps in version check (#21962)

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Martin Holst Swende 2020-12-09 13:59:24 +01:00 committed by GitHub
parent 40b6ccf383
commit 915643a3e5
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 72 additions and 13 deletions
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22
cmd/geth/testdata/vcheck/data2.json → cmd/geth/testdata/vcheck/vulnerabilities.json vendored
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@ -7,28 +7,32 @@
"links": [
"https://github.com/ethereum/go-ethereum/pull/21793",
"https://blog.ethereum.org/2020/11/12/geth_security_release/",
"https://github.com/ethereum/go-ethereum/commit/567d41d9363706b4b13ce0903804e8acf214af49"
"https://github.com/ethereum/go-ethereum/commit/567d41d9363706b4b13ce0903804e8acf214af49",
"https://github.com/ethereum/go-ethereum/security/advisories/GHSA-v592-xf75-856p"
],
"introduced": "v1.6.0",
"fixed": "v1.9.24",
"published": "2020-11-12",
"severity": "Medium",
"check": "Geth\\/v1\\.(6|7|8)\\..*|Geth\\/v1\\.9\\.2(1|2|3)-.*",
"CVE": "correct"
"CVE": "CVE-2020-26240",
"check": "Geth\\/v1\\.(6|7|8)\\..*|Geth\\/v1\\.9\\.\\d-.*|Geth\\/v1\\.9\\.1.*|Geth\\/v1\\.9\\.2(0|1|2|3)-.*"
},
{
"name": "GoCrash",
"name": "Denial of service due to Go CVE-2020-28362",
"uid": "GETH-2020-02",
"summary": "A denial-of-service issue can be used to crash Geth nodes during block processing, due to an underlying bug in Go (CVE-2020-28362) versions < `1.15.5`, or `<1.14.12`",
"description": "The DoS issue can be used to crash all Geth nodes during block processing, the effects of which would be that a major part of the Ethereum network went offline.\n\nOutside of Go-Ethereum, the issue is most likely relevant for all forks of Geth (such as TurboGeth or ETC’s core-geth) which is built with versions of Go which contains the vulnerability.",
"links": [
"https://blog.ethereum.org/2020/11/12/geth_security_release/",
"https://groups.google.com/g/golang-announce/c/NpBGTTmKzpM",
"https://github.com/golang/go/issues/42552"
"https://github.com/golang/go/issues/42552",
"https://github.com/ethereum/go-ethereum/security/advisories/GHSA-m6gx-rhvj-fh52"
],
"introduced": "v0.0.0",
"fixed": "v1.9.24",
"published": "2020-11-12",
"severity": "Critical",
"CVE": "CVE-2020-28362",
"check": "Geth.*\\/go1\\.(11(.*)|12(.*)|13(.*)|14|14\\.(\\d|10|11|)|15|15\\.[0-4])$"
},
{
@ -37,12 +41,14 @@
"summary": "A consensus flaw in Geth, related to `datacopy` precompile",
"description": "Geth erroneously performed a 'shallow' copy when the precompiled `datacopy` (at `0x00...04`) was invoked. An attacker could deploy a contract that uses the shallow copy to corrupt the contents of the `RETURNDATA`, thus causing a consensus failure.",
"links": [
"https://blog.ethereum.org/2020/11/12/geth_security_release/"
"https://blog.ethereum.org/2020/11/12/geth_security_release/",
"https://github.com/ethereum/go-ethereum/security/advisories/GHSA-69v6-xc2j-r2jf"
],
"introduced": "v1.9.7",
"fixed": "v1.9.17",
"published": "2020-11-12",
"severity": "Critical",
"CVE": "CVE-2020-26241",
"check": "Geth\\/v1\\.9\\.(7|8|9|10|11|12|13|14|15|16).*$"
},
{
@ -51,12 +57,14 @@
"summary": "A denial-of-service issue can be used to crash Geth nodes during block processing",
"description": "Full details to be disclosed at a later date",
"links": [
"https://blog.ethereum.org/2020/11/12/geth_security_release/"
"https://blog.ethereum.org/2020/11/12/geth_security_release/",
"https://github.com/ethereum/go-ethereum/security/advisories/GHSA-jm5c-rv3w-w83m"
],
"introduced": "v1.9.16",
"fixed": "v1.9.18",
"published": "2020-11-12",
"severity": "Critical",
"CVE": "CVE-2020-26242",
"check": "Geth\\/v1\\.9.(16|17).*$"
}
]

63
cmd/geth/version_check_test.go
View File

@ -18,8 +18,12 @@ package main
import (
"encoding/json"
"fmt"
"io/ioutil"
"path/filepath"
"regexp"
"strconv"
"strings"
"testing"
)
@ -64,16 +68,63 @@ func testVerification(t *testing.T, pubkey, sigdir string) {
}
}
func TestJson(t *testing.T) {
data, _ := ioutil.ReadFile("./testdata/vcheck/data2.json")
func versionUint(v string) int {
mustInt := func(s string) int {
a, err := strconv.Atoi(s)
if err != nil {
panic(v)
}
return a
}
components := strings.Split(strings.TrimPrefix(v, "v"), ".")
a := mustInt(components[0])
b := mustInt(components[1])
c := mustInt(components[2])
return a*100*100 + b*100 + c
}
// TestMatching can be used to check that the regexps are correct
func TestMatching(t *testing.T) {
data, _ := ioutil.ReadFile("./testdata/vcheck/vulnerabilities.json")
var vulns []vulnJson
if err := json.Unmarshal(data, &vulns); err != nil {
t.Fatal(err)
}
if len(vulns) == 0 {
t.Fatal("expected data, got none")
check := func(version string) {
vFull := fmt.Sprintf("Geth/%v-unstable-15339cf1-20201204/linux-amd64/go1.15.4", version)
for _, vuln := range vulns {
r, err := regexp.Compile(vuln.Check)
vulnIntro := versionUint(vuln.Introduced)
vulnFixed := versionUint(vuln.Fixed)
current := versionUint(version)
if err != nil {
t.Fatal(err)
}
if vuln.Name == "Denial of service due to Go CVE-2020-28362" {
// this one is not tied to geth-versions
continue
}
if vulnIntro <= current && vulnFixed > current {
// Should be vulnerable
if !r.MatchString(vFull) {
t.Errorf("Should be vulnerable, version %v, intro: %v, fixed: %v %v %v",
version, vuln.Introduced, vuln.Fixed, vuln.Name, vuln.Check)
}
} else {
if r.MatchString(vFull) {
t.Errorf("Should not be flagged vulnerable, version %v, intro: %v, fixed: %v %v %d %d %d",
version, vuln.Introduced, vuln.Fixed, vuln.Name, vulnIntro, current, vulnFixed)
}
}
}
}
if have, want := vulns[0].CVE, "correct"; have != want {
t.Errorf("have %v, want %v", have, want)
for major := 1; major < 2; major++ {
for minor := 0; minor < 30; minor++ {
for patch := 0; patch < 30; patch++ {
vShort := fmt.Sprintf("v%d.%d.%d", major, minor, patch)
check(vShort)
}
}
}
}