CVE-2022-37767: Pebble Pebble Templates Protection Mechanism Bypass Vulnerability

CRITICAL
Advisory Identifier: GHSA-wxx5-w9jc-48wx
Share
CVSS 9.8
CWE-863
Published
Advisory Summary

CVE-2022-37767 is a CRITICAL (CVSS 9.8) pebble templates protection mechanism bypass vulnerability (CWE-863: Incorrect Authorization) affecting Pebble libraries in the Maven ecosystem. The issue involves pebble templates protection mechanism bypass can lead to arbitrary code execution. Remediation is available in the latest vendor maintenance releases.

CVE-2022-37767 at a Glance

CVE Identifier CVE-2022-37767
GHSA Identifier GHSA-wxx5-w9jc-48wx
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-863: Incorrect Authorization
Affected Product Pebble
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 9.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2022-37767

To remediate this vulnerability, upgrade all affected Pebble dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

io.pebbletemplates:pebble fixed: Latest secure release 
<dependency>
    <groupId>io.pebbletemplates</groupId>
    <artifactId>pebble</artifactId>
    <version>Latest secure release</version>
</dependency>
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree -Dincludes=io.pebbletemplates

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2022-37767, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=io.pebbletemplates

Analyze the terminal output to locate any version of Pebble in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The mvn dependency:tree -Dincludes=io.pebbletemplates command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-863: Incorrect Authorization, where the product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. In Pebble, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

Pebble Templates 3.1.5 allows attackers to bypass a protection mechanism and implement arbitrary code execution with springbok.

CVE-2022-37767 Affected Pebble Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
io.pebbletemplates:pebble
maven/io.pebbletemplates/pebble
Maven
≤ 3.1.5

References

NVD — CVE-2022-37767 NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-37767
Pebble Source Repository REPOSITORY
https://github.com/PebbleTemplates/pebble/issues/625#issuecomment-1282138635
Pebble Source Repository REPOSITORY
https://github.com/Y4tacker/Web-Security/issues/3

Frequently Asked Questions

What is CVE-2022-37767?
CVE-2022-37767 is a security vulnerability in Pebble involving Pebble Templates protection mechanism bypass can lead to arbitrary code execution under CWE-863: Incorrect Authorization.
Which Pebble versions are affected?
Affected versions include releases prior to current release patches across affected packages: io.pebbletemplates:pebble.
What version fixes CVE-2022-37767?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is pebble affected?
Yes, io.pebbletemplates:pebble is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2022-37767?
CVE-2022-37767 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2022-37767?
CVE-2022-37767 is classified under CWE-863: Incorrect Authorization (The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.).
How can I check Maven dependencies for CVE-2022-37767?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=io.pebbletemplates'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-wxx5-w9jc-48wx",
  "modified" : "2022-09-16T22:02:16Z",
  "published" : "2022-09-13T00:00:39Z",
  "aliases" : [ "CVE-2022-37767" ],
  "summary" : "Pebble Templates protection mechanism bypass can lead to arbitrary code execution",
  "details" : "Pebble Templates 3.1.5 allows attackers to bypass a protection mechanism and implement arbitrary code execution with springbok.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "io.pebbletemplates:pebble"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "3.1.5"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-37767"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/PebbleTemplates/pebble/issues/625#issuecomment-1282138635"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/Y4tacker/Web-Security/issues/3"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-863" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-09-15T03:27:25Z",
    "nvd_published_at" : "2022-09-12T14:15:00Z"
  }
}