CVE-2021-35516: Commons compress Improper Handling Of Length Parameter Vulnerability

Q: What is CVE-2021-35516?

CVE-2021-35516 is a security vulnerability in Commons compress involving Improper Handling of Length Parameter Inconsistency in Compress under CWE-770: Allocation of Resources Without Limits or Throttling.

Q: Which Commons compress versions are affected?

Affected versions include releases prior to 1.21 across affected packages: org.apache.commons:commons-compress.

Q: What version fixes CVE-2021-35516?

Upgrading to 1.21 (or the latest patched release for your respective branch) resolves the vulnerability.

Q: Is commons-compress affected?

Yes, org.apache.commons:commons-compress is affected in releases prior to 1.21. Upgrade your dependency to 1.21 or later.

Q: What is the CVSS score of CVE-2021-35516?

CVE-2021-35516 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Q: What CWE is associated with CVE-2021-35516?

CVE-2021-35516 is classified under CWE-770: Allocation of Resources Without Limits or Throttling (The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.).

Q: How can I check Maven dependencies for CVE-2021-35516?

Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.apache.commons'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.

HIGH

Advisory Identifier: GHSA-crv7-7245-f45f

CVSS 7.5

CWE-770 CWE-130

Published 2021-08-02

Advisory Summary

CVE-2021-35516 is a HIGH (CVSS 7.5) improper handling of length parameter vulnerability (CWE-770: Allocation of Resources Without Limits or Throttling) affecting Commons compress libraries in the Maven ecosystem. The issue involves improper handling of length parameter inconsistency in compress. Remediation is available by upgrading affected packages to version 1.21.

CVE-2021-35516 at a Glance

CVE Identifier CVE-2021-35516

GHSA Identifier GHSA-crv7-7245-f45f

Severity HIGH

CVSS v3.1 Base Score 7.5

CWE Classification CWE-770: Allocation of Resources Without Limits or Throttling

Affected Product Commons compress

Package Ecosystem Maven

Published Date 2021-08-02

Last Updated 2022-02-08

Security Impact

CVSS: 7.5

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:N/I:N/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 None (C:N)

Integrity None (I:N)

Availability High (A:H)

How to Fix CVE-2021-35516

To remediate this vulnerability, upgrade all affected Commons compress 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.commons:commons-compress fixed: 1.21

<dependency>
    <groupId>org.apache.commons</groupId>
    <artifactId>commons-compress</artifactId>
    <version>1.21</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.commons

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2021-35516, inspect your build dependencies using the Maven Dependency Plugin:

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

Analyze the terminal output to locate any version of Commons compress in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.21), your application is affected.

Note: The mvn dependency:tree -Dincludes=org.apache.commons 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-770: Allocation of Resources Without Limits or Throttling, where the product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated. In Commons compress, 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

When reading a specially crafted 7Z archive, Compress can be made to allocate large amounts of memory that finally leads to an out of memory error even for very small inputs. This could be used to mount a denial of service attack against services that use Compress' sevenz package.

CVE-2021-35516 Affected Commons compress Versions

1 component(s)

Fixed Versions:

1.21

Product / Package	Ecosystem	Affected Versions	Fixed Version
org.apache.commons:commons-compress maven/org.apache.commons/commons-compress	Maven	< 1.21	1.21

References

NVD — CVE-2021-35516 NVD

https://nvd.nist.gov/vuln/detail/CVE-2021-35516

Commons compress Security Information SECURITY

https://www.oracle.com/security-alerts/cpuoct2021.html

Commons compress Security Information SECURITY

https://www.oracle.com/security-alerts/cpujul2022.html

Commons compress Security Information SECURITY

https://www.oracle.com/security-alerts/cpujan2022.html

Commons compress Security Information SECURITY

https://www.oracle.com/security-alerts/cpuapr2022.html

Commons compress Security Information SECURITY

https://security.netapp.com/advisory/ntap-20211022-0001

lists.apache.org/thread.html/rfba191... WEB

https://lists.apache.org/thread.html/rfba19167efc785ad3561e7ef29f340d65ac8f0d897aed00e0731e742@%3Cnotifications.skywalking.apache.org%3E

lists.apache.org/thread.html/rf68442... WEB

https://lists.apache.org/thread.html/rf68442d67eb166f4b6cf0bbbe6c7f99098c12954f37332073c9822ca%40%3Cuser.commons.apache.org%3E

lists.apache.org/thread.html/rf5b101... WEB

https://lists.apache.org/thread.html/rf5b1016fb15b7118b9a5e16bb0b78cb4f1dfcf7821eb137ab5757c91@%3Cannounce.apache.org%3E

lists.apache.org/thread.html/rd4332b... WEB

https://lists.apache.org/thread.html/rd4332baaf6debd03d60deb7ec93bee49e5fdbe958cb6800dff7fb00e@%3Cnotifications.skywalking.apache.org%3E

lists.apache.org/thread.html/rba65ed... WEB

https://lists.apache.org/thread.html/rba65ed5ddb0586f5b12598f55ec7db3633e7b7fede60466367fbf86a@%3Cnotifications.skywalking.apache.org%3E

lists.apache.org/thread.html/rb7adf3... WEB

https://lists.apache.org/thread.html/rb7adf3e55359819e77230b4586521e5c6874ce5ed93384bdc14d6aee@%3Cnotifications.skywalking.apache.org%3E

lists.apache.org/thread.html/rb6e1fa... WEB

https://lists.apache.org/thread.html/rb6e1fa80d34e5ada45f72655d84bfd90db0ca44ef19236a49198c88c@%3Cnotifications.skywalking.apache.org%3E

lists.apache.org/thread.html/rb064d7... WEB

https://lists.apache.org/thread.html/rb064d705fdfa44b5dae4c366b369ef6597951083196321773b983e71@%3Ccommits.pulsar.apache.org%3E

lists.apache.org/thread.html/racd0c0... WEB

https://lists.apache.org/thread.html/racd0c0381c8404f298b226cd9db2eaae965b14c9c568224aa3f437ae@%3Cnotifications.skywalking.apache.org%3E

lists.apache.org/thread.html/r9f54c0... WEB

https://lists.apache.org/thread.html/r9f54c0caa462267e0cc68b49f141e91432b36b23348d18c65bd0d040@%3Cnotifications.skywalking.apache.org%3E

lists.apache.org/thread.html/r67ef3c... WEB

https://lists.apache.org/thread.html/r67ef3c07fe3b8c1b02d48012149d280ad6da8e4cec253b527520fb2b@%3Cdev.poi.apache.org%3E

Commons compress Security Information SECURITY

https://commons.apache.org/proper/commons-compress/security-reports.html

Commons compress Security Information SECURITY

http://www.openwall.com/lists/oss-security/2021/07/13/2

Frequently Asked Questions

What is CVE-2021-35516?

CVE-2021-35516 is a security vulnerability in Commons compress involving Improper Handling of Length Parameter Inconsistency in Compress under CWE-770: Allocation of Resources Without Limits or Throttling.

Which Commons compress versions are affected?

Affected versions include releases prior to 1.21 across affected packages: org.apache.commons:commons-compress.

What version fixes CVE-2021-35516?

Upgrading to 1.21 (or the latest patched release for your respective branch) resolves the vulnerability.

Is commons-compress affected?

Yes, org.apache.commons:commons-compress is affected in releases prior to 1.21. Upgrade your dependency to 1.21 or later.

What is the CVSS score of CVE-2021-35516?

CVE-2021-35516 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

What CWE is associated with CVE-2021-35516?

CVE-2021-35516 is classified under CWE-770: Allocation of Resources Without Limits or Throttling (The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.).

How can I check Maven dependencies for CVE-2021-35516?

Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.apache.commons'. 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

{
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  "id" : "GHSA-crv7-7245-f45f",
  "modified" : "2022-02-08T21:08:47Z",
  "published" : "2021-08-02T16:55:15Z",
  "aliases" : [ "CVE-2021-35516" ],
  "summary" : "Improper Handling of Length Parameter Inconsistency in Compress",
  "details" : "When reading a specially crafted 7Z archive, Compress can be made to allocate large amounts of memory that finally leads to an out of memory error even for very small inputs. This could be used to mount a denial of service attack against services that use Compress' sevenz package.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ {
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    },
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      "events" : [ {
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  }, {
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  }, {
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  } ],
  "database_specific" : {
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}

CVSS V3

7.5 HIGH

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 None (C:N)

Integrity None (I:N)

Availability High (A:H)

Vector String

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Advisory Metadata

Source ID: GHSA-crv7-7245-f45f
Schema Version: 1.4.0
Published: 2021-08-02 16:55
Last Modified: 2022-02-08 21:08
Database Record File: advisories/github-reviewed/2021/08/GHSA-crv7-7245-f45f/GHSA-crv7-7245-f45f.json