cvelistv5 - CVE-2021-32751

CVE-2021-32751

Vulnerability from cvelistv5

Published

2021-07-20 22:55

Modified

2024-08-03 23:33

Severity ?

7.5 (High) - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Summary

Gradle is a build tool with a focus on build automation. In versions prior to 7.2, start scripts generated by the `application` plugin and the `gradlew` script are both vulnerable to arbitrary code execution when an attacker is able to change environment variables for the user running the script. This may impact those who use `gradlew` on Unix-like systems or use the scripts generated by Gradle in thieir application on Unix-like systems. For this vulnerability to be exploitable, an attacker needs to be able to set the value of particular environment variables and have those environment variables be seen by the vulnerable scripts. This issue has been patched in Gradle 7.2 by removing the use of `eval` and requiring the use of the `bash` shell. There are a few workarounds available. For CI/CD systems using the Gradle build tool, one may ensure that untrusted users are unable to change environment variables for the user that executes `gradlew`. If one is unable to upgrade to Gradle 7.2, one may generate a new `gradlew` script with Gradle 7.2 and use it for older versions of Gradle. Fpplications using start scripts generated by Gradle, one may ensure that untrusted users are unable to change environment variables for the user that executes the start script. A vulnerable start script could be manually patched to remove the use of `eval` or the use of environment variables that affect the application's command-line. If the application is simple enough, one may be able to avoid the use of the start scripts by running the application directly with Java command.

References

URL	Tags
security-advisories@github.com	https://github.com/gradle/gradle/security/advisories/GHSA-6j2p-252f-7mw8	Exploit, Third Party Advisory
security-advisories@github.com	https://medium.com/dot-debug/the-perils-of-bash-eval-cc5f9e309cae	Exploit, Third Party Advisory
security-advisories@github.com	https://mywiki.wooledge.org/BashFAQ/048	Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://github.com/gradle/gradle/security/advisories/GHSA-6j2p-252f-7mw8	Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://medium.com/dot-debug/the-perils-of-bash-eval-cc5f9e309cae	Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://mywiki.wooledge.org/BashFAQ/048	Exploit, Third Party Advisory

Impacted products

Vendor

Product

Version

▼

gradle

Version: < 7.2

Show details on NVD website

JSON

To clipboard

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gsd-2021-32751

Vulnerability from gsd

Modified

2023-12-13 01:23

Details

Aliases

CVE-2021-32751

Aliases

CVE-2021-32751

JSON

To clipboard

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            "name": "https://medium.com/dot-debug/the-perils-of-bash-eval-cc5f9e309cae",
            "refsource": "MISC",
            "url": "https://medium.com/dot-debug/the-perils-of-bash-eval-cc5f9e309cae"
          },
          {
            "name": "https://mywiki.wooledge.org/BashFAQ/048",
            "refsource": "MISC",
            "url": "https://mywiki.wooledge.org/BashFAQ/048"
          }
        ]
      },
      "source": {
        "advisory": "GHSA-6j2p-252f-7mw8",
        "discovery": "UNKNOWN"
      }
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "(,7.2)",
          "affected_versions": "All versions before 7.2",
          "cvss_v2": "AV:N/AC:M/Au:S/C:C/I:C/A:C",
          "cvss_v3": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "cwe_ids": [
            "CWE-1035",
            "CWE-937"
          ],
          "date": "2021-07-30",
          "description": "Gradle is a build tool with a focus on build automation., start scripts generated by the `application` plugin and the `gradlew` script are both vulnerable to arbitrary code execution when an attacker is able to change environment variables for the user running the script.",
          "fixed_versions": [],
          "identifier": "CVE-2021-32751",
          "identifiers": [
            "CVE-2021-32751",
            "GHSA-6j2p-252f-7mw8"
          ],
          "not_impacted": "",
          "package_slug": "maven/org.gradle/gradle-core",
          "pubdate": "2021-07-20",
          "solution": "Unfortunately, there is no solution available yet.",
          "title": "OS Command Injection",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2021-32751"
          ],
          "uuid": "a92ebbda-046c-4924-9066-4e3783b807cc"
        }
      ]
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:gradle:gradle:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "7.2",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "security-advisories@github.com",
          "ID": "CVE-2021-32751"
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "Gradle is a build tool with a focus on build automation. In versions prior to 7.2, start scripts generated by the `application` plugin and the `gradlew` script are both vulnerable to arbitrary code execution when an attacker is able to change environment variables for the user running the script. This may impact those who use `gradlew` on Unix-like systems or use the scripts generated by Gradle in thieir application on Unix-like systems. For this vulnerability to be exploitable, an attacker needs to be able to set the value of particular environment variables and have those environment variables be seen by the vulnerable scripts. This issue has been patched in Gradle 7.2 by removing the use of `eval` and requiring the use of the `bash` shell. There are a few workarounds available. For CI/CD systems using the Gradle build tool, one may ensure that untrusted users are unable to change environment variables for the user that executes `gradlew`. If one is unable to upgrade to Gradle 7.2, one may generate a new `gradlew` script with Gradle 7.2 and use it for older versions of Gradle. Fpplications using start scripts generated by Gradle, one may ensure that untrusted users are unable to change environment variables for the user that executes the start script. A vulnerable start script could be manually patched to remove the use of `eval` or the use of environment variables that affect the application\u0027s command-line. If the application is simple enough, one may be able to avoid the use of the start scripts by running the application directly with Java command."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-78"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/gradle/gradle/security/advisories/GHSA-6j2p-252f-7mw8",
              "refsource": "CONFIRM",
              "tags": [
                "Exploit",
                "Third Party Advisory"
              ],
              "url": "https://github.com/gradle/gradle/security/advisories/GHSA-6j2p-252f-7mw8"
            },
            {
              "name": "https://mywiki.wooledge.org/BashFAQ/048",
              "refsource": "MISC",
              "tags": [
                "Exploit",
                "Third Party Advisory"
              ],
              "url": "https://mywiki.wooledge.org/BashFAQ/048"
            },
            {
              "name": "https://medium.com/dot-debug/the-perils-of-bash-eval-cc5f9e309cae",
              "refsource": "MISC",
              "tags": [
                "Exploit",
                "Third Party Advisory"
              ],
              "url": "https://medium.com/dot-debug/the-perils-of-bash-eval-cc5f9e309cae"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "NETWORK",
            "authentication": "SINGLE",
            "availabilityImpact": "COMPLETE",
            "baseScore": 8.5,
            "confidentialityImpact": "COMPLETE",
            "integrityImpact": "COMPLETE",
            "vectorString": "AV:N/AC:M/Au:S/C:C/I:C/A:C",
            "version": "2.0"
          },
          "exploitabilityScore": 6.8,
          "impactScore": 10.0,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "HIGH",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 1.6,
          "impactScore": 5.9
        }
      },
      "lastModifiedDate": "2021-07-30T12:53Z",
      "publishedDate": "2021-07-20T23:15Z"
    }
  }
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

Action not permitted

CVE-2021-32751

Vulnerability from cvelistv5

gsd-2021-32751

Vulnerability from gsd

Tags

Sightings

Nomenclature