GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

GSD-2020-26238

Vulnerability from gsd - Updated: 2023-12-13 01:22
Details
Cron-utils is a Java library to parse, validate, migrate crons as well as get human readable descriptions for them. In cron-utils before version 9.1.3, a template Injection vulnerability is present. This enables attackers to inject arbitrary Java EL expressions, leading to unauthenticated Remote Code Execution (RCE) vulnerability. Only projects using the @Cron annotation to validate untrusted Cron expressions are affected. This issue was patched in version 9.1.3.
Aliases
Aliases
CVE-2020-26238
To clipboard 

{
  "GSD": {
    "alias": "CVE-2020-26238",
    "description": "Cron-utils is a Java library to parse, validate, migrate crons as well as get human readable descriptions for them. In cron-utils before version 9.1.3, a template Injection vulnerability is present. This enables attackers to inject arbitrary Java EL expressions, leading to unauthenticated Remote Code Execution (RCE) vulnerability. Only projects using the @Cron annotation to validate untrusted Cron expressions are affected. This issue was patched in version 9.1.3.",
    "id": "GSD-2020-26238",
    "references": [
      "https://access.redhat.com/errata/RHSA-2021:3207",
      "https://access.redhat.com/errata/RHSA-2021:3205",
      "https://access.redhat.com/errata/RHSA-2021:1004"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2020-26238"
      ],
      "details": "Cron-utils is a Java library to parse, validate, migrate crons as well as get human readable descriptions for them. In cron-utils before version 9.1.3, a template Injection vulnerability is present. This enables attackers to inject arbitrary Java EL expressions, leading to unauthenticated Remote Code Execution (RCE) vulnerability. Only projects using the @Cron annotation to validate untrusted Cron expressions are affected. This issue was patched in version 9.1.3.",
      "id": "GSD-2020-26238",
      "modified": "2023-12-13T01:22:08.698403Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "security-advisories@github.com",
        "ID": "CVE-2020-26238",
        "STATE": "PUBLIC",
        "TITLE": "Critical vulnerability found in cron-utils"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "cron-utils",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "\u003c 9.1.3"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "jmrozanec"
            }
          ]
        }
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "Cron-utils is a Java library to parse, validate, migrate crons as well as get human readable descriptions for them. In cron-utils before version 9.1.3, a template Injection vulnerability is present. This enables attackers to inject arbitrary Java EL expressions, leading to unauthenticated Remote Code Execution (RCE) vulnerability. Only projects using the @Cron annotation to validate untrusted Cron expressions are affected. This issue was patched in version 9.1.3."
          }
        ]
      },
      "impact": {
        "cvss": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "NONE",
          "baseScore": 7.9,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N",
          "version": "3.1"
        }
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component (\u0027Injection\u0027)"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://github.com/jmrozanec/cron-utils/security/advisories/GHSA-pfj3-56hm-jwq5",
            "refsource": "CONFIRM",
            "url": "https://github.com/jmrozanec/cron-utils/security/advisories/GHSA-pfj3-56hm-jwq5"
          },
          {
            "name": "https://github.com/jmrozanec/cron-utils/issues/461",
            "refsource": "MISC",
            "url": "https://github.com/jmrozanec/cron-utils/issues/461"
          },
          {
            "name": "https://github.com/jmrozanec/cron-utils/commit/4cf373f7352f5d95f0bf6512af8af326b31c835e",
            "refsource": "MISC",
            "url": "https://github.com/jmrozanec/cron-utils/commit/4cf373f7352f5d95f0bf6512af8af326b31c835e"
          },
          {
            "name": "[hive-issues] 20210316 [jira] [Assigned] (HIVE-24890) Upgrade to cron-utils 9.1.3 due to CVE-2020-26238",
            "refsource": "MLIST",
            "url": "https://lists.apache.org/thread.html/r96937fc9c82f3201b59311c067e97bce71123944f93102169a95bf5c@%3Cissues.hive.apache.org%3E"
          },
          {
            "name": "[hive-dev] 20210316 [jira] [Created] (HIVE-24890) Upgrade to cron-utils 9.1.3 due to CVE-2020-26238",
            "refsource": "MLIST",
            "url": "https://lists.apache.org/thread.html/r5f601d15292e3302ad0ae0e89527029546945b1cd5837af7e838d354@%3Cdev.hive.apache.org%3E"
          },
          {
            "name": "[hive-issues] 20210316 [jira] [Work started] (HIVE-24890) Upgrade to cron-utils 9.1.3 due to CVE-2020-26238",
            "refsource": "MLIST",
            "url": "https://lists.apache.org/thread.html/ra9e81244d323898dde3c979dd7df6996e4037d14a01b6629ea443548@%3Cissues.hive.apache.org%3E"
          },
          {
            "name": "[hive-gitbox] 20210316 [GitHub] [hive] achennagiri opened a new pull request #2081: HIVE-24890: Upgrade the cron-utils library from 8.1.1 to 9.1.3 due to CVE-2020-26238",
            "refsource": "MLIST",
            "url": "https://lists.apache.org/thread.html/r855aead591697dc2e85faf66c99036e49f492431940b78d4e6d895b5@%3Cgitbox.hive.apache.org%3E"
          },
          {
            "name": "[hive-issues] 20210316 [jira] [Work logged] (HIVE-24890) Upgrade to cron-utils 9.1.3 due to CVE-2020-26238",
            "refsource": "MLIST",
            "url": "https://lists.apache.org/thread.html/r9ae9a9fb1c8e2bf95c676e7e4cd06aa04f0a3a8a9ec1a6b787afb00f@%3Cissues.hive.apache.org%3E"
          },
          {
            "name": "[hive-issues] 20210316 [jira] [Updated] (HIVE-24890) Upgrade to cron-utils 9.1.3 due to CVE-2020-26238",
            "refsource": "MLIST",
            "url": "https://lists.apache.org/thread.html/r71083c759dc627f198571b3d48b6745fe798b1d53c34f7ef8de9e7dd@%3Cissues.hive.apache.org%3E"
          },
          {
            "name": "[hive-issues] 20210317 [jira] [Commented] (HIVE-24890) Upgrade to cron-utils 9.1.3 due to CVE-2020-26238",
            "refsource": "MLIST",
            "url": "https://lists.apache.org/thread.html/r50e1b5544c37e408ed7e9a958b28237b1cb9660ba2b3dba46f343e23@%3Cissues.hive.apache.org%3E"
          },
          {
            "name": "[hive-issues] 20210317 [jira] [Resolved] (HIVE-24890) Upgrade to cron-utils 9.1.3 due to CVE-2020-26238",
            "refsource": "MLIST",
            "url": "https://lists.apache.org/thread.html/r432a69a1a85cbcb1f1bad2aa0fbfce0367bf894bf917f6ed7118e7f0@%3Cissues.hive.apache.org%3E"
          },
          {
            "name": "[hive-issues] 20210317 [jira] [Work logged] (HIVE-24890) Upgrade to cron-utils 9.1.3 due to CVE-2020-26238",
            "refsource": "MLIST",
            "url": "https://lists.apache.org/thread.html/r737406bc17d49ffe8fe6a8828d390ee0a02e45e5a5b4f931180b9a93@%3Cissues.hive.apache.org%3E"
          },
          {
            "name": "[hive-gitbox] 20210317 [GitHub] [hive] yongzhi merged pull request #2081: HIVE-24890: Upgrade the cron-utils library from 8.1.1 to 9.1.3 due to CVE-2020-26238",
            "refsource": "MLIST",
            "url": "https://lists.apache.org/thread.html/r390bb7630b7ea8f02bf7adbbe69c0ae8b562c527d663c543d965f959@%3Cgitbox.hive.apache.org%3E"
          }
        ]
      },
      "source": {
        "advisory": "GHSA-pfj3-56hm-jwq5",
        "discovery": "UNKNOWN"
      }
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "(,9.1.3)",
          "affected_versions": "All versions before 9.1.3",
          "cvss_v2": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
          "cvss_v3": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "cwe_ids": [
            "CWE-1035",
            "CWE-74",
            "CWE-937"
          ],
          "date": "2021-03-24",
          "description": "Cron-utils is a Java library to parse, validate, migrate crons as well as get human readable descriptions for them. In cron-utils, a template Injection vulnerability is present. This enables attackers to inject arbitrary Java EL expressions, leading to unauthenticated Remote Code Execution (RCE) vulnerability. Only projects using the @Cron annotation to validate untrusted Cron expressions are affected. This issue was patched ",
          "fixed_versions": [
            "9.1.3"
          ],
          "identifier": "CVE-2020-26238",
          "identifiers": [
            "CVE-2020-26238",
            "GHSA-pfj3-56hm-jwq5"
          ],
          "not_impacted": "All versions starting from 9.1.3",
          "package_slug": "maven/com.cronutils/cron-utils",
          "pubdate": "2020-11-25",
          "solution": "Upgrade to version 9.1.3 or above.",
          "title": "Injection Vulnerability",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2020-26238",
            "https://github.com/jmrozanec/cron-utils/issues/461"
          ],
          "uuid": "6a29cc24-23e5-42cd-8edd-3c43524615aa"
        }
      ]
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:cron-utils_project:cron-utils:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "9.1.3",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "security-advisories@github.com",
          "ID": "CVE-2020-26238"
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "Cron-utils is a Java library to parse, validate, migrate crons as well as get human readable descriptions for them. In cron-utils before version 9.1.3, a template Injection vulnerability is present. This enables attackers to inject arbitrary Java EL expressions, leading to unauthenticated Remote Code Execution (RCE) vulnerability. Only projects using the @Cron annotation to validate untrusted Cron expressions are affected. This issue was patched in version 9.1.3."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-74"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/jmrozanec/cron-utils/issues/461",
              "refsource": "MISC",
              "tags": [
                "Exploit",
                "Issue Tracking",
                "Third Party Advisory"
              ],
              "url": "https://github.com/jmrozanec/cron-utils/issues/461"
            },
            {
              "name": "https://github.com/jmrozanec/cron-utils/commit/4cf373f7352f5d95f0bf6512af8af326b31c835e",
              "refsource": "MISC",
              "tags": [
                "Patch",
                "Third Party Advisory"
              ],
              "url": "https://github.com/jmrozanec/cron-utils/commit/4cf373f7352f5d95f0bf6512af8af326b31c835e"
            },
            {
              "name": "https://github.com/jmrozanec/cron-utils/security/advisories/GHSA-pfj3-56hm-jwq5",
              "refsource": "CONFIRM",
              "tags": [
                "Exploit",
                "Third Party Advisory"
              ],
              "url": "https://github.com/jmrozanec/cron-utils/security/advisories/GHSA-pfj3-56hm-jwq5"
            },
            {
              "name": "[hive-issues] 20210316 [jira] [Assigned] (HIVE-24890) Upgrade to cron-utils 9.1.3 due to CVE-2020-26238",
              "refsource": "MLIST",
              "tags": [
                "Mailing List",
                "Third Party Advisory"
              ],
              "url": "https://lists.apache.org/thread.html/r96937fc9c82f3201b59311c067e97bce71123944f93102169a95bf5c@%3Cissues.hive.apache.org%3E"
            },
            {
              "name": "[hive-dev] 20210316 [jira] [Created] (HIVE-24890) Upgrade to cron-utils 9.1.3 due to CVE-2020-26238",
              "refsource": "MLIST",
              "tags": [
                "Mailing List",
                "Third Party Advisory"
              ],
              "url": "https://lists.apache.org/thread.html/r5f601d15292e3302ad0ae0e89527029546945b1cd5837af7e838d354@%3Cdev.hive.apache.org%3E"
            },
            {
              "name": "[hive-issues] 20210316 [jira] [Work started] (HIVE-24890) Upgrade to cron-utils 9.1.3 due to CVE-2020-26238",
              "refsource": "MLIST",
              "tags": [
                "Mailing List",
                "Third Party Advisory"
              ],
              "url": "https://lists.apache.org/thread.html/ra9e81244d323898dde3c979dd7df6996e4037d14a01b6629ea443548@%3Cissues.hive.apache.org%3E"
            },
            {
              "name": "[hive-issues] 20210316 [jira] [Work logged] (HIVE-24890) Upgrade to cron-utils 9.1.3 due to CVE-2020-26238",
              "refsource": "MLIST",
              "tags": [
                "Mailing List",
                "Third Party Advisory"
              ],
              "url": "https://lists.apache.org/thread.html/r9ae9a9fb1c8e2bf95c676e7e4cd06aa04f0a3a8a9ec1a6b787afb00f@%3Cissues.hive.apache.org%3E"
            },
            {
              "name": "[hive-issues] 20210316 [jira] [Updated] (HIVE-24890) Upgrade to cron-utils 9.1.3 due to CVE-2020-26238",
              "refsource": "MLIST",
              "tags": [
                "Mailing List",
                "Third Party Advisory"
              ],
              "url": "https://lists.apache.org/thread.html/r71083c759dc627f198571b3d48b6745fe798b1d53c34f7ef8de9e7dd@%3Cissues.hive.apache.org%3E"
            },
            {
              "name": "[hive-gitbox] 20210316 [GitHub] [hive] achennagiri opened a new pull request #2081: HIVE-24890: Upgrade the cron-utils library from 8.1.1 to 9.1.3 due to CVE-2020-26238",
              "refsource": "MLIST",
              "tags": [
                "Mailing List",
                "Third Party Advisory"
              ],
              "url": "https://lists.apache.org/thread.html/r855aead591697dc2e85faf66c99036e49f492431940b78d4e6d895b5@%3Cgitbox.hive.apache.org%3E"
            },
            {
              "name": "[hive-issues] 20210317 [jira] [Commented] (HIVE-24890) Upgrade to cron-utils 9.1.3 due to CVE-2020-26238",
              "refsource": "MLIST",
              "tags": [
                "Mailing List",
                "Third Party Advisory"
              ],
              "url": "https://lists.apache.org/thread.html/r50e1b5544c37e408ed7e9a958b28237b1cb9660ba2b3dba46f343e23@%3Cissues.hive.apache.org%3E"
            },
            {
              "name": "[hive-issues] 20210317 [jira] [Work logged] (HIVE-24890) Upgrade to cron-utils 9.1.3 due to CVE-2020-26238",
              "refsource": "MLIST",
              "tags": [
                "Mailing List",
                "Third Party Advisory"
              ],
              "url": "https://lists.apache.org/thread.html/r737406bc17d49ffe8fe6a8828d390ee0a02e45e5a5b4f931180b9a93@%3Cissues.hive.apache.org%3E"
            },
            {
              "name": "[hive-issues] 20210317 [jira] [Resolved] (HIVE-24890) Upgrade to cron-utils 9.1.3 due to CVE-2020-26238",
              "refsource": "MLIST",
              "tags": [
                "Mailing List",
                "Third Party Advisory"
              ],
              "url": "https://lists.apache.org/thread.html/r432a69a1a85cbcb1f1bad2aa0fbfce0367bf894bf917f6ed7118e7f0@%3Cissues.hive.apache.org%3E"
            },
            {
              "name": "[hive-gitbox] 20210317 [GitHub] [hive] yongzhi merged pull request #2081: HIVE-24890: Upgrade the cron-utils library from 8.1.1 to 9.1.3 due to CVE-2020-26238",
              "refsource": "MLIST",
              "tags": [
                "Mailing List",
                "Third Party Advisory"
              ],
              "url": "https://lists.apache.org/thread.html/r390bb7630b7ea8f02bf7adbbe69c0ae8b562c527d663c543d965f959@%3Cgitbox.hive.apache.org%3E"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 6.8,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
            "version": "2.0"
          },
          "exploitabilityScore": 8.6,
          "impactScore": 6.4,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 2.2,
          "impactScore": 5.9
        }
      },
      "lastModifiedDate": "2021-03-24T01:16Z",
      "publishedDate": "2020-11-25T00:15Z"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.