Red Hat Security Advisory: OpenShift Container Platform 4.8.22 security update

Fixed packages 3

Vulnerabilities 15

• Critical 9.1
  CVE-2021-21697

  Agent-to-controller access control allows reading/writing most content of build directories in Jenkins

  Jenkins 2.318 and earlier, LTS 2.303.2 and earlier allows any agent to read and write the contents of any build directory stored in Jenkins with very few restrictions.

  Jenkins Project Jenkins org.jenkins-ci.main:jenkins-core Web / CMS Maven
  Nov 4, 2021
• Critical 9.0
  CVE-2021-21685

  Multiple vulnerabilities allow bypassing path filtering of agent-to-controller access control in Jenkins

  Jenkins 2.318 and earlier, LTS 2.303.2 and earlier does not check agent-to-controller access to create parent directories in FilePath#mkdirs.

  Jenkins Project Jenkins org.jenkins-ci.main:jenkins-core Web / CMS Maven
  Nov 4, 2021
• Critical 9.0
  CVE-2021-21686

  Multiple vulnerabilities allow bypassing path filtering of agent-to-controller access control in Jenkins

  File path filters in the agent-to-controller security subsystem of Jenkins 2.318 and earlier, LTS 2.303.2 and earlier do not canonicalize paths, allowing operations to follow symbolic links to outside allowed directories.

  Jenkins Project Jenkins org.jenkins-ci.main:jenkins-core Web / CMS Maven
  Nov 4, 2021
• Critical 9.0
  CVE-2021-21687

  Multiple vulnerabilities allow bypassing path filtering of agent-to-controller access control in Jenkins

  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.

  Jenkins Project Jenkins org.jenkins-ci.main:jenkins-core Web / CMS Maven
  Nov 4, 2021
• Critical 9.0
  CVE-2021-21688

  Multiple vulnerabilities allow bypassing path filtering of agent-to-controller access control in Jenkins

  The agent-to-controller security check FilePath#reading(FileVisitor) in Jenkins 2.318 and earlier, LTS 2.303.2 and earlier does not reject any operations, allowing users to have unrestricted read access using certain operations (creating archives, FilePath#co…

  Jenkins Project Jenkins org.jenkins-ci.main:jenkins-core Web / CMS Maven
  Nov 4, 2021
• Critical 9.0
  CVE-2021-21689

  Multiple vulnerabilities allow bypassing path filtering of agent-to-controller access control in Jenkins

  FilePath#unzip and FilePath#untar were not subject to any agent-to-controller access control in Jenkins 2.318 and earlier, LTS 2.303.2 and earlier.

  Jenkins Project Jenkins org.jenkins-ci.main:jenkins-core Web / CMS Maven
  Nov 4, 2021
• Critical 9.0
  CVE-2021-21690

  Multiple vulnerabilities allow bypassing path filtering of agent-to-controller access control in Jenkins

  Agent processes are able to completely bypass file path filtering by wrapping the file operation in an agent file path in Jenkins 2.318 and earlier, LTS 2.303.2 and earlier.

  Jenkins Project Jenkins org.jenkins-ci.main:jenkins-core Web / CMS Maven
  Nov 4, 2021
• Critical 9.0
  CVE-2021-21691

  Multiple vulnerabilities allow bypassing path filtering of agent-to-controller access control in Jenkins

  Creating symbolic links is possible without the 'symlink' agent-to-controller access control permission in Jenkins 2.318 and earlier, LTS 2.303.2 and earlier.

  Jenkins Project Jenkins org.jenkins-ci.main:jenkins-core Web / CMS Maven
  Nov 4, 2021
• Critical 9.0
  CVE-2021-21692

  Multiple vulnerabilities allow bypassing path filtering of agent-to-controller access control in Jenkins

  FilePath#renameTo and FilePath#moveAllChildrenTo in Jenkins 2.318 and earlier, LTS 2.303.2 and earlier only check 'read' agent-to-controller access permission on the source path, instead of 'delete'.

  Jenkins Project Jenkins org.jenkins-ci.main:jenkins-core Web / CMS Maven
  Nov 4, 2021
• Critical 9.0
  CVE-2021-21693

  Multiple vulnerabilities allow bypassing path filtering of agent-to-controller access control in Jenkins

  When creating temporary files, agent-to-controller access to create those files is only checked after they've been created in Jenkins 2.318 and earlier, LTS 2.303.2 and earlier.

  Jenkins Project Jenkins org.jenkins-ci.main:jenkins-core Web / CMS Maven
  Nov 4, 2021
• Critical 9.0
  CVE-2021-21694

  Multiple vulnerabilities allow bypassing path filtering of agent-to-controller access control in Jenkins

  FilePath#toURI, FilePath#hasSymlink, FilePath#absolutize, FilePath#isDescendant, and FilePath#get*DiskSpace do not check any permissions in Jenkins 2.318 and earlier, LTS 2.303.2 and earlier.

  Jenkins Project Jenkins org.jenkins-ci.main:jenkins-core Web / CMS Maven
  Nov 4, 2021
• Critical 9.0
  CVE-2021-21695

  Multiple vulnerabilities allow bypassing path filtering of agent-to-controller access control in Jenkins

  FilePath#listFiles lists files outside directories that agents are allowed to access when following symbolic links in Jenkins 2.318 and earlier, LTS 2.303.2 and earlier.

  Jenkins Project Jenkins org.jenkins-ci.main:jenkins-core Web / CMS Maven
  Nov 4, 2021
• High 8.8
  CVE-2021-21696

  Agent-to-controller access control allowed writing to sensitive directory used by Jenkins Pipeline: Shared Groovy Libraries Plugin

  Jenkins 2.318 and earlier, LTS 2.303.2 and earlier does not limit agent read/write access to the libs/ directory inside build directories when using the FilePath APIs, allowing attackers in control of agent processes to replace the code of a trusted library w…

  Jenkins Project Jenkins org.jenkins-ci.main:jenkins-core Web / CMS Maven
  Nov 4, 2021
• Medium 6.5
  CVE-2021-21698

  Path traversal vulnerability in Jenkins Subversion Plugin allows reading arbitrary files

  Jenkins Subversion Plugin 2.15.0 and earlier does not restrict the name of a file when looking up a subversion key file on the controller from an agent.

  Jenkins Project Jenkins Subversion Plugin subversion org.jenkins-ci.plugins:subversion Web / CMS Azure Linux Maven
  Nov 4, 2021
• Medium 5.5
  CVE-2021-3917

  coreos-installer < 0.10.0 writes world-readable Ignition config to installed system

  A flaw was found in the coreos-installer, where it writes the Ignition config to the target system with world-readable access permissions. This flaw allows a local attacker to have read access to potentially sensitive data. The highest threat from this vulner…

  coreos-installer crates.io
  Aug 23, 2022

References

• article
  https://access.redhat.com/security/updates/classification/#important
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2018478
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2020322
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2020323
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2020324
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2020327
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2020335
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2020336
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2020338
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2020339
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2020341
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2020342
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2020343
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2020344
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2020345
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2020385
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2021/rhsa-2021_4829.json
• report
  https://access.redhat.com/security/cve/CVE-2021-3917
• advisory
  https://www.cve.org/CVERecord?id=CVE-2021-3917
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2021-3917
• article
  https://github.com/coreos/coreos-installer/commit/2a36405339c87b16ed6c76e91ad5b76638fbdb0c
• report
  https://access.redhat.com/security/cve/CVE-2021-21685
• advisory
  https://www.cve.org/CVERecord?id=CVE-2021-21685
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2021-21685
• article
  https://www.jenkins.io/security/advisory/2021-11-04/#SECURITY-2455
• report
  https://access.redhat.com/security/cve/CVE-2021-21686
• advisory
  https://www.cve.org/CVERecord?id=CVE-2021-21686
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2021-21686
• report
  https://access.redhat.com/security/cve/CVE-2021-21687
• advisory
  https://www.cve.org/CVERecord?id=CVE-2021-21687
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2021-21687
• report
  https://access.redhat.com/security/cve/CVE-2021-21688
• advisory
  https://www.cve.org/CVERecord?id=CVE-2021-21688
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2021-21688
• report
  https://access.redhat.com/security/cve/CVE-2021-21689
• advisory
  https://www.cve.org/CVERecord?id=CVE-2021-21689
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2021-21689
• report
  https://access.redhat.com/security/cve/CVE-2021-21690
• advisory
  https://www.cve.org/CVERecord?id=CVE-2021-21690