CVE-2020-7226: Cryptacular Denial of Service Vulnerability

Q: What is CVE-2020-7226?

CVE-2020-7226 is a security vulnerability in Cryptacular involving Denial of Service in Cryptacular under CWE-770: Allocation of Resources Without Limits or Throttling.

Q: Which Cryptacular versions are affected?

Affected versions include releases prior to 1.1.4, 1.2.4 across affected packages: org.cryptacular:cryptacular.

Q: What version fixes CVE-2020-7226?

Upgrading to 1.1.4, 1.2.4 (or the latest patched release for your respective branch) resolves the vulnerability.

Q: Is cryptacular affected?

Yes, org.cryptacular:cryptacular is affected in releases prior to 1.1.4, 1.2.4. Upgrade your dependency to 1.1.4, 1.2.4 or later.

Q: What is the CVSS score of CVE-2020-7226?

CVE-2020-7226 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-2020-7226?

CVE-2020-7226 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-2020-7226?

Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.cryptacular'. 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-x64g-4xx9-fh6x

CVSS 7.5

CWE-770

Published 2020-06-10

Advisory Summary

CVE-2020-7226 is a HIGH (CVSS 7.5) denial of service vulnerability (CWE-770: Allocation of Resources Without Limits or Throttling) affecting Cryptacular libraries in the Maven ecosystem. The issue involves denial of service in cryptacular. Remediation is available by upgrading affected packages to version 1.1.4, 1.2.4.

CVE-2020-7226 at a Glance

CVE Identifier CVE-2020-7226

GHSA Identifier GHSA-x64g-4xx9-fh6x

Severity HIGH

CVSS v3.1 Base Score 7.5

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

Affected Product Cryptacular

Package Ecosystem Maven

Published Date 2020-06-10

Last Updated 2021-10-21

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-2020-7226

To remediate this vulnerability, upgrade all affected Cryptacular 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.cryptacular:cryptacular fixed: 1.1.4

<dependency>
    <groupId>org.cryptacular</groupId>
    <artifactId>cryptacular</artifactId>
    <version>1.1.4</version>
</dependency>

org.cryptacular:cryptacular fixed: 1.2.4

<dependency>
    <groupId>org.cryptacular</groupId>
    <artifactId>cryptacular</artifactId>
    <version>1.2.4</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.cryptacular

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2020-7226, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=org.cryptacular

Analyze the terminal output to locate any version of Cryptacular in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.1.4), your application is affected.

Note: The mvn dependency:tree -Dincludes=org.cryptacular 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 Cryptacular, 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

CiphertextHeader.java in Cryptacular before 1.2.4, as used in Apereo CAS and other products, allows attackers to trigger excessive memory allocation during a decode operation, because the nonce array length associated with "new byte" may depend on untrusted input within the header of encoded data.

CVE-2020-7226 Affected Cryptacular Versions

2 component(s)

Fixed Versions:

1.1.41.2.4

Product / Package	Ecosystem	Affected Versions	Fixed Version
org.cryptacular:cryptacular maven/org.cryptacular/cryptacular	Maven	< 1.1.4	1.1.4
org.cryptacular:cryptacular maven/org.cryptacular/cryptacular	Maven	≥ 1.2.0 < 1.2.4	1.2.4

References

NVD — CVE-2020-7226 NVD

https://nvd.nist.gov/vuln/detail/CVE-2020-7226

Cryptacular Source Repository REPOSITORY

https://github.com/vt-middleware/cryptacular/issues/52

Cryptacular Source Repository REPOSITORY

https://github.com/apereo/cas/pull/4685

Cryptacular Source Repository REPOSITORY

https://github.com/vt-middleware/cryptacular/pull/56

Security Fix Commit FIX COMMIT

https://github.com/apereo/cas/commit/8810f2b6c71d73341d4dde6b09a18eb46cfd6d45

Security Fix Commit FIX COMMIT

https://github.com/apereo/cas/commit/93b1c3e9d90e36a19d0fa0f6efb863c6f0235e75

Security Fix Commit FIX COMMIT

https://github.com/apereo/cas/commit/a042808d6adbbf44753d52c55cac5f533e24101f

Security Fix Commit FIX COMMIT

https://github.com/vt-middleware/cryptacular/commit/311baf12252abf21947afd07bf0a0291ec3ec796

Security Fix Commit FIX COMMIT

https://github.com/vt-middleware/cryptacular/commit/ec2fb65f2455c479376695e3d75d30c7f6884b3f

Cryptacular Security Information SECURITY

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

Cryptacular Security Information SECURITY

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

lists.apache.org/thread.html/rfa4647... WEB

https://lists.apache.org/thread.html/rfa4647c58e375996e62a9094bffff6dc350ec311ba955b430e738945@%3Cdev.ws.apache.org%3E

lists.apache.org/thread.html/re7f46c... WEB

https://lists.apache.org/thread.html/re7f46c4cc29a4616e0aa669c84a0eb34832e83a8eef05189e2e59b44@%3Cdev.ws.apache.org%3E

lists.apache.org/thread.html/re04e4f... WEB

https://lists.apache.org/thread.html/re04e4f8f0d095387fb6b0ff9016a0af8c93f42e1de93b09298bfa547@%3Ccommits.ws.apache.org%3E

lists.apache.org/thread.html/rc36b75... WEB

https://lists.apache.org/thread.html/rc36b75cabb4d700b48035d15ad8b8c2712bb32123572a1bdaec2510a@%3Cdev.ws.apache.org%3E

lists.apache.org/thread.html/r77c48c... WEB

https://lists.apache.org/thread.html/r77c48cd851f60833df9a9c9c31f12243508e15d1b2a0961066d44fc6@%3Ccommits.tomee.apache.org%3E

lists.apache.org/thread.html/r4a6213... WEB

https://lists.apache.org/thread.html/r4a62133ad01d5f963755021027a4cce23f76b8674a13860d2978c7c8@%3Ccommits.tomee.apache.org%3E

lists.apache.org/thread.html/r380781... WEB

https://lists.apache.org/thread.html/r380781f5b489cb3c818536cd3b3757e806bfe0bca188591e0051ac03@%3Ccommits.ws.apache.org%3E

lists.apache.org/thread.html/r2237a2... WEB

https://lists.apache.org/thread.html/r2237a27040b57adc2fcc5570bd530ad2038e67fcb2a3ce65283d3143@%3Ccommits.tomee.apache.org%3E

lists.apache.org/thread.html/r209de8... WEB

https://lists.apache.org/thread.html/r209de85beae4d257d27fc577e3a3e97039bdb4c2dc6f4a8e5a5a5811@%3Ccommits.tomee.apache.org%3E

lists.apache.org/thread.html/r0847c7... WEB

https://lists.apache.org/thread.html/r0847c7eb78c8f9e87d5b841fbd5da52b2ad4b4345e04b51c30621d88@%3Ccommits.tomee.apache.org%3E

Cryptacular Source Repository REPOSITORY

https://github.com/vt-middleware/cryptacular/blob/master/src/main/java/org/cryptacular/CiphertextHeader.java#L153

Cryptacular Source Repository REPOSITORY

https://github.com/vt-middleware/cryptacular/blob/fafccd07ab1214e3588a35afe3c361519129605f/src/main/java/org/cryptacular/CiphertextHeader.java#L153

Cryptacular Source Repository REPOSITORY

https://github.com/vt-middleware/cryptacular

Frequently Asked Questions

What is CVE-2020-7226?

CVE-2020-7226 is a security vulnerability in Cryptacular involving Denial of Service in Cryptacular under CWE-770: Allocation of Resources Without Limits or Throttling.

Which Cryptacular versions are affected?

Affected versions include releases prior to 1.1.4, 1.2.4 across affected packages: org.cryptacular:cryptacular.

What version fixes CVE-2020-7226?

Upgrading to 1.1.4, 1.2.4 (or the latest patched release for your respective branch) resolves the vulnerability.

Is cryptacular affected?

Yes, org.cryptacular:cryptacular is affected in releases prior to 1.1.4, 1.2.4. Upgrade your dependency to 1.1.4, 1.2.4 or later.

What is the CVSS score of CVE-2020-7226?

CVE-2020-7226 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-2020-7226?

CVE-2020-7226 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-2020-7226?

Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.cryptacular'. 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-x64g-4xx9-fh6x",
  "modified" : "2021-10-21T21:14:28Z",
  "published" : "2020-06-10T20:02:58Z",
  "aliases" : [ "CVE-2020-7226" ],
  "summary" : "Denial of Service in Cryptacular",
  "details" : "CiphertextHeader.java in Cryptacular before 1.2.4, as used in Apereo CAS and other products, allows attackers to trigger excessive memory allocation during a decode operation, because the nonce array length associated with &quot;new byte&quot; may depend on untrusted input within the header of encoded data.",
  "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" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.cryptacular:cryptacular"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.1.4"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.cryptacular:cryptacular"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1.2.0"
      }, {
        "fixed" : "1.2.4"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-7226"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/vt-middleware/cryptacular/issues/52"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apereo/cas/pull/4685"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/vt-middleware/cryptacular/pull/56"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apereo/cas/commit/8810f2b6c71d73341d4dde6b09a18eb46cfd6d45"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apereo/cas/commit/93b1c3e9d90e36a19d0fa0f6efb863c6f0235e75"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apereo/cas/commit/a042808d6adbbf44753d52c55cac5f533e24101f"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/vt-middleware/cryptacular/commit/311baf12252abf21947afd07bf0a0291ec3ec796"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/vt-middleware/cryptacular/commit/ec2fb65f2455c479376695e3d75d30c7f6884b3f"
  }, {
    "type" : "WEB",
    "url" : "https://www.oracle.com/security-alerts/cpuoct2021.html"
  }, {
    "type" : "WEB",
    "url" : "https://www.oracle.com/security-alerts/cpuapr2022.html"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/rfa4647c58e375996e62a9094bffff6dc350ec311ba955b430e738945@%3Cdev.ws.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/re7f46c4cc29a4616e0aa669c84a0eb34832e83a8eef05189e2e59b44@%3Cdev.ws.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/re04e4f8f0d095387fb6b0ff9016a0af8c93f42e1de93b09298bfa547@%3Ccommits.ws.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/rc36b75cabb4d700b48035d15ad8b8c2712bb32123572a1bdaec2510a@%3Cdev.ws.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/r77c48cd851f60833df9a9c9c31f12243508e15d1b2a0961066d44fc6@%3Ccommits.tomee.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/r4a62133ad01d5f963755021027a4cce23f76b8674a13860d2978c7c8@%3Ccommits.tomee.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/r380781f5b489cb3c818536cd3b3757e806bfe0bca188591e0051ac03@%3Ccommits.ws.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/r2237a27040b57adc2fcc5570bd530ad2038e67fcb2a3ce65283d3143@%3Ccommits.tomee.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/r209de85beae4d257d27fc577e3a3e97039bdb4c2dc6f4a8e5a5a5811@%3Ccommits.tomee.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/r0847c7eb78c8f9e87d5b841fbd5da52b2ad4b4345e04b51c30621d88@%3Ccommits.tomee.apache.org%3E"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/vt-middleware/cryptacular/blob/master/src/main/java/org/cryptacular/CiphertextHeader.java#L153"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/vt-middleware/cryptacular/blob/fafccd07ab1214e3588a35afe3c361519129605f/src/main/java/org/cryptacular/CiphertextHeader.java#L153"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/vt-middleware/cryptacular"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-770" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2020-06-10T18:23:35Z",
    "nvd_published_at" : "2020-01-24T15:15:00Z"
  }
}

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-x64g-4xx9-fh6x
Schema Version: 1.4.0
Published: 2020-06-10 20:02
Last Modified: 2021-10-21 21:14
Database Record File: advisories/github-reviewed/2020/06/GHSA-x64g-4xx9-fh6x/GHSA-x64g-4xx9-fh6x.json