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CVE-2020-11979 (GCVE-0-2020-11979)

Vulnerability from cvelistv5 – Published: 2020-10-01 19:24 – Updated: 2024-08-04 11:48
VLAI
Summary
As mitigation for CVE-2020-1945 Apache Ant 1.10.8 changed the permissions of temporary files it created so that only the current user was allowed to access them. Unfortunately the fixcrlf task deleted the temporary file and created a new one without said protection, effectively nullifying the effort. This would still allow an attacker to inject modified source files into the build process.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CWE
  • insecure temporary file vulnerability
  • CWE-379 - Creation of Temporary File in Directory with Incorrect Permissions
Assigner
References
URL Tags
https://lists.apache.org/thread.html/rc3c8ef9724b… x_refsource_MISC
https://lists.apache.org/thread.html/r1dc8518dc99… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r4ca33fad3fb… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r107ea1b1a7a… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r2306b67f20c… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r5e1cdd79f01… mailing-listx_refsource_MLIST
https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
https://security.gentoo.org/glsa/202011-18 vendor-advisoryx_refsource_GENTOO
https://www.oracle.com/security-alerts/cpujan2021.html x_refsource_MISC
https://github.com/gradle/gradle/security/advisor… x_refsource_MISC
https://lists.apache.org/thread.html/raaeddc41da8… mailing-listx_refsource_MLIST
https://www.oracle.com/security-alerts/cpuApr2021.html x_refsource_MISC
https://lists.apache.org/thread.html/rbfe9ba28b74… mailing-listx_refsource_MLIST
https://www.oracle.com//security-alerts/cpujul2021.html x_refsource_MISC
https://www.oracle.com/security-alerts/cpuoct2021.html x_refsource_MISC
https://www.oracle.com/security-alerts/cpujan2022.html x_refsource_MISC
https://www.oracle.com/security-alerts/cpuapr2022.html x_refsource_MISC
Impacted products
Vendor Product Version CPE status
n/a Apache Ant Affected: Apache Ant 1.10.8
Show details on NVD website
To clipboard 

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              "url": "https://lists.apache.org/thread.html/raaeddc41da8f3afb1cb224876084a45f68e437a0afd9889a707e4b0c@%3Cdev.creadur.apache.org%3E"
            },
            {
              "name": "https://www.oracle.com/security-alerts/cpuApr2021.html",
              "refsource": "MISC",
              "url": "https://www.oracle.com/security-alerts/cpuApr2021.html"
            },
            {
              "name": "[creadur-dev] 20210621 [jira] [Commented] (RAT-274) Update to at least Ant 1.10.8/1.9.15 in order to fix CVE-2020-11979 / raise compiler level to JDK8",
              "refsource": "MLIST",
              "url": "https://lists.apache.org/thread.html/rbfe9ba28b74f39f46ec1bbbac3bef313f35017cf3aac13841a84483a@%3Cdev.creadur.apache.org%3E"
            },
            {
              "name": "https://www.oracle.com//security-alerts/cpujul2021.html",
              "refsource": "MISC",
              "url": "https://www.oracle.com//security-alerts/cpujul2021.html"
            },
            {
              "name": "https://www.oracle.com/security-alerts/cpuoct2021.html",
              "refsource": "MISC",
              "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
            },
            {
              "name": "https://www.oracle.com/security-alerts/cpujan2022.html",
              "refsource": "MISC",
              "url": "https://www.oracle.com/security-alerts/cpujan2022.html"
            },
            {
              "name": "https://www.oracle.com/security-alerts/cpuapr2022.html",
              "refsource": "MISC",
              "url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
    "assignerShortName": "apache",
    "cveId": "CVE-2020-11979",
    "datePublished": "2020-10-01T19:24:57.000Z",
    "dateReserved": "2020-04-21T00:00:00.000Z",
    "dateUpdated": "2024-08-04T11:48:57.549Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2020-11979",
      "date": "2026-09-09",
      "epss": "0.08235",
      "percentile": "0.94548"
    },
    "microsoft_vex": {
      "current_release_date": "2020-10-14T00:00:00.000Z",
      "cve": "CVE-2020-11979",
      "id": "msrc_CVE-2020-11979",
      "initial_release_date": "2020-10-02T00:00:00.000Z",
      "product_status:fixed": "1",
      "product_status:known_affected": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "As mitigation for CVE-2020-1945 Apache Ant 1.10.8 changed the permissions of temporary files it created so that only the current user was allowed to access them. Unfortunately the fixcrlf task deleted the temporary file and created a new one without said protection effectively nullifying the effort. This would still allow an attacker to inject modified source files into the build process.",
      "url": "https://msrc.microsoft.com/csaf/vex/2020/msrc_cve-2020-11979.json",
      "version": "1"
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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-04T21:46:07+00:00",
      "cve": "CVE-2020-11979",
      "id": "CVE-2020-11979",
      "initial_release_date": "2020-10-01T00:00:00+00:00",
      "product_status:fixed": "49",
      "product_status:known_affected": "52",
      "product_status:known_not_affected": "185",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "ant: insecure temporary file",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2020/cve-2020-11979.json",
      "version": "3"
    }
  }
}



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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.