CVE-2022-42920: Bcel Apache Commons BCEL Vulnerable To Vulnerability

CRITICAL
Advisory Identifier: GHSA-97xg-phpr-rg8q
CVSS 9.8
CWE-787
Published
Advisory Summary

CVE-2022-42920 is a CRITICAL (CVSS 9.8) apache commons bcel vulnerable to vulnerability (CWE-787: Out-of-bounds Write) affecting Bcel libraries in the Maven ecosystem. The issue involves apache commons bcel vulnerable to out-of-bounds write. Remediation is available by upgrading affected packages to version 6.6.0.

CVE-2022-42920 at a Glance

CVE Identifier CVE-2022-42920
GHSA Identifier GHSA-97xg-phpr-rg8q
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-787: Out-of-bounds Write
Affected Product Bcel
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-2022-42920

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

org.apache.bcel:bcel fixed: 6.6.0
<dependency>
    <groupId>org.apache.bcel</groupId>
    <artifactId>bcel</artifactId>
    <version>6.6.0</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=org.apache.bcel

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2022-42920, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=org.apache.bcel

Analyze the terminal output to locate any version of Bcel in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 6.6.0), your application is affected.

Note: The mvn dependency:tree -Dincludes=org.apache.bcel 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-787: Out-of-bounds Write, where the product writes data past the end, or before the beginning, of the intended buffer. In Bcel, 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

Apache Commons BCEL has a number of APIs that would normally only allow changing specific class characteristics. However, due to an out-of-bounds writing issue, these APIs can be used to produce arbitrary bytecode. This could be abused in applications that pass attacker-controllable data to those APIs, giving the attacker more control over the resulting bytecode than otherwise expected. Update to Apache Commons BCEL 6.6.0.

CVE-2022-42920 Affected Bcel Versions

1 component(s)
Fixed Versions:
6.6.0
Product / Package Ecosystem Affected Versions Fixed Version
org.apache.bcel:bcel
Maven
< 6.6.0
6.6.0

References

NVD — CVE-2022-42920 NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-42920
Bcel Source Repository REPOSITORY
https://github.com/apache/commons-bcel/pull/147
Bcel Source Repository REPOSITORY
https://github.com/apache/commons-bcel
issues.apache.org/jira/browse/bcel-36... WEB
https://issues.apache.org/jira/browse/BCEL-363
lists.apache.org/thread/lfxk7q8qmnh5... WEB
https://lists.apache.org/thread/lfxk7q8qmnh5bt9jm6nmjlv5hsxjhrz4
lists.fedoraproject.org/archives/list/packa... WEB
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LX3HEB4TV2BVCGDTK5BCLSYOZNQTOBN4
lists.fedoraproject.org/archives/list/packa... WEB
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QAMRHAKGIKZNHRBB4VLYTOIOIMMXCUCD
lists.fedoraproject.org/archives/list/packa... WEB
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QMVX6COVXZVS5GPWDODIRW6Z2GE7RPAQ
lists.fedoraproject.org/archives/list/packa... WEB
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LX3HEB4TV2BVCGDTK5BCLSYOZNQTOBN4
lists.fedoraproject.org/archives/list/packa... WEB
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QAMRHAKGIKZNHRBB4VLYTOIOIMMXCUCD
lists.fedoraproject.org/archives/list/packa... WEB
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QMVX6COVXZVS5GPWDODIRW6Z2GE7RPAQ
Bcel Security Information SECURITY
https://security.gentoo.org/glsa/202401-25
Bcel Security Information SECURITY
http://www.openwall.com/lists/oss-security/2022/11/07/2

Frequently Asked Questions

What is CVE-2022-42920?
CVE-2022-42920 is a security vulnerability in Bcel involving Apache Commons BCEL vulnerable to out-of-bounds write under CWE-787: Out-of-bounds Write.
Which Bcel versions are affected?
Affected versions include releases prior to 6.6.0 across affected packages: org.apache.bcel:bcel.
What version fixes CVE-2022-42920?
Upgrading to 6.6.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is bcel affected?
Yes, org.apache.bcel:bcel is affected in releases prior to 6.6.0. Upgrade your dependency to 6.6.0 or later.
What is the CVSS score of CVE-2022-42920?
CVE-2022-42920 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-2022-42920?
CVE-2022-42920 is classified under CWE-787: Out-of-bounds Write (The product writes data past the end, or before the beginning, of the intended buffer.).
How can I check Maven dependencies for CVE-2022-42920?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.apache.bcel'. 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
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-97xg-phpr-rg8q",
  "modified" : "2022-11-08T15:08:59Z",
  "published" : "2022-11-07T19:00:22Z",
  "aliases" : [ "CVE-2022-42920" ],
  "summary" : "Apache Commons BCEL vulnerable to out-of-bounds write",
  "details" : "Apache Commons BCEL has a number of APIs that would normally only allow changing specific class characteristics. However, due to an out-of-bounds writing issue, these APIs can be used to produce arbitrary bytecode. This could be abused in applications that pass attacker-controllable data to those APIs, giving the attacker more control over the resulting bytecode than otherwise expected. Update to Apache Commons BCEL 6.6.0.",
  "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" : "org.apache.bcel:bcel"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "6.6.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-42920"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apache/commons-bcel/pull/147"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/apache/commons-bcel"
  }, {
    "type" : "WEB",
    "url" : "https://issues.apache.org/jira/browse/BCEL-363"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread/lfxk7q8qmnh5bt9jm6nmjlv5hsxjhrz4"
  }, {
    "type" : "WEB",
    "url" : "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LX3HEB4TV2BVCGDTK5BCLSYOZNQTOBN4"
  }, {
    "type" : "WEB",
    "url" : "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QAMRHAKGIKZNHRBB4VLYTOIOIMMXCUCD"
  }, {
    "type" : "WEB",
    "url" : "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QMVX6COVXZVS5GPWDODIRW6Z2GE7RPAQ"
  }, {
    "type" : "WEB",
    "url" : "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LX3HEB4TV2BVCGDTK5BCLSYOZNQTOBN4"
  }, {
    "type" : "WEB",
    "url" : "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QAMRHAKGIKZNHRBB4VLYTOIOIMMXCUCD"
  }, {
    "type" : "WEB",
    "url" : "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QMVX6COVXZVS5GPWDODIRW6Z2GE7RPAQ"
  }, {
    "type" : "WEB",
    "url" : "https://security.gentoo.org/glsa/202401-25"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2022/11/07/2"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-787" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-11-07T21:05:28Z",
    "nvd_published_at" : "2022-11-07T13:15:00Z"
  }
}