{
  "threat_severity" : "Important",
  "public_date" : "2021-11-04T14:20:00Z",
  "bugzilla" : {
    "description" : "jenkins: FilePath#untar does not check permission to create symbolic links when unarchiving a symbolic link",
    "id" : "2020324",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2020324"
  },
  "cvss3" : {
    "cvss3_base_score" : "9.0",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H",
    "status" : "verified"
  },
  "cwe" : "CWE-59",
  "details" : [ "Jenkins 2.318 and earlier, LTS 2.303.2 and earlier does not check agent-to-controller access to create symbolic links when unarchiving a symbolic link in FilePath#untar.", "An incorrect permissions validation vulnerability was found in Jenkins. The FilePath#untar does not check permission to create symbolic links when unarchiving a symbolic link, which may allow an attacker to get read and write access to arbitrary files on the Jenkins controller file system." ],
  "affected_release" : [ {
    "product_name" : "Red Hat OpenShift Container Platform 3.11",
    "release_date" : "2021-12-02T00:00:00Z",
    "advisory" : "RHSA-2021:4827",
    "cpe" : "cpe:/a:redhat:openshift:3.11::el7",
    "package" : "jenkins-0:2.303.3.1637698110-1.el7"
  }, {
    "product_name" : "Red Hat OpenShift Container Platform 4.6",
    "release_date" : "2021-12-02T00:00:00Z",
    "advisory" : "RHSA-2021:4799",
    "cpe" : "cpe:/a:redhat:openshift:4.6::el8",
    "package" : "jenkins-0:2.303.3.1637597493-1.el8"
  }, {
    "product_name" : "Red Hat OpenShift Container Platform 4.7",
    "release_date" : "2021-12-01T00:00:00Z",
    "advisory" : "RHSA-2021:4801",
    "cpe" : "cpe:/a:redhat:openshift:4.7::el8",
    "package" : "jenkins-0:2.303.3.1637597018-1.el8"
  }, {
    "product_name" : "Red Hat OpenShift Container Platform 4.8",
    "release_date" : "2021-11-30T00:00:00Z",
    "advisory" : "RHSA-2021:4829",
    "cpe" : "cpe:/a:redhat:openshift:4.8::el8",
    "package" : "jenkins-0:2.303.3.1637596565-1.el8"
  }, {
    "product_name" : "Red Hat OpenShift Container Platform 4.9",
    "release_date" : "2021-11-29T00:00:00Z",
    "advisory" : "RHSA-2021:4833",
    "cpe" : "cpe:/a:redhat:openshift:4.9::el8",
    "package" : "jenkins-0:2.303.3.1637595827-1.el8"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Fuse 7",
    "fix_state" : "Not affected",
    "package_name" : "jenkins",
    "cpe" : "cpe:/a:redhat:jboss_fuse:7"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2021-21687\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-21687\nhttps://www.jenkins.io/security/advisory/2021-11-04/#SECURITY-2455" ],
  "name" : "CVE-2021-21687",
  "mitigation" : {
    "value" : "Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.",
    "lang" : "en:us"
  },
  "csaw" : false
}