RHSA-2019:1652HighCVSS 7.5

Red Hat Security Advisory: libssh2 security update

Published
July 2, 2019
Last Modified
October 14, 2026

🔗 CVE IDs covered (4)

CVE-2019-3855 →CVE-2019-3856 →CVE-2019-3857 →CVE-2019-3863 →

📋 Description

CVE-2019-3855 — libssh2: Integer overflow in transport read resulting in out of bounds write CVE-2019-3856 — libssh2: Integer overflow in keyboard interactive handling resulting in out of bounds write CVE-2019-3857 — libssh2: Integer overflow in SSH packet processing channel resulting in out of bounds write CVE-2019-3863 — libssh2: Integer overflow in user authenticate keyboard interactive allows out-of-bounds writes

🎯 Affected products69

  • Red Hat Enterprise Linux Desktop (v. 6)
  • Red Hat Enterprise Linux Desktop Optional (v. 6)
  • Red Hat Enterprise Linux HPC Node (v. 6)
  • Red Hat Enterprise Linux HPC Node Optional (v. 6)
  • Red Hat Enterprise Linux Server (v. 6)
  • Red Hat Enterprise Linux Server Optional (v. 6)
  • Red Hat Enterprise Linux Workstation (v. 6)
  • Red Hat Enterprise Linux Workstation Optional (v. 6)
  • libssh2-0:1.4.2-3.el6_10.1.i686 as a component of Red Hat Enterprise Linux Desktop (v. 6)
  • libssh2-0:1.4.2-3.el6_10.1.i686 as a component of Red Hat Enterprise Linux HPC Node (v. 6)
  • libssh2-0:1.4.2-3.el6_10.1.i686 as a component of Red Hat Enterprise Linux Server (v. 6)
  • libssh2-0:1.4.2-3.el6_10.1.i686 as a component of Red Hat Enterprise Linux Workstation (v. 6)
  • libssh2-0:1.4.2-3.el6_10.1.ppc as a component of Red Hat Enterprise Linux Server (v. 6)
  • libssh2-0:1.4.2-3.el6_10.1.ppc64 as a component of Red Hat Enterprise Linux Server (v. 6)
  • libssh2-0:1.4.2-3.el6_10.1.s390 as a component of Red Hat Enterprise Linux Server (v. 6)
  • libssh2-0:1.4.2-3.el6_10.1.s390x as a component of Red Hat Enterprise Linux Server (v. 6)
  • libssh2-0:1.4.2-3.el6_10.1.src as a component of Red Hat Enterprise Linux Desktop (v. 6)
  • libssh2-0:1.4.2-3.el6_10.1.src as a component of Red Hat Enterprise Linux HPC Node (v. 6)
  • libssh2-0:1.4.2-3.el6_10.1.src as a component of Red Hat Enterprise Linux Server (v. 6)
  • libssh2-0:1.4.2-3.el6_10.1.src as a component of Red Hat Enterprise Linux Workstation (v. 6)
  • libssh2-0:1.4.2-3.el6_10.1.x86_64 as a component of Red Hat Enterprise Linux Desktop (v. 6)
  • libssh2-0:1.4.2-3.el6_10.1.x86_64 as a component of Red Hat Enterprise Linux HPC Node (v. 6)
  • libssh2-0:1.4.2-3.el6_10.1.x86_64 as a component of Red Hat Enterprise Linux Server (v. 6)
  • libssh2-0:1.4.2-3.el6_10.1.x86_64 as a component of Red Hat Enterprise Linux Workstation (v. 6)
  • libssh2-debuginfo-0:1.4.2-3.el6_10.1.i686 as a component of Red Hat Enterprise Linux Desktop (v. 6)
  • libssh2-debuginfo-0:1.4.2-3.el6_10.1.i686 as a component of Red Hat Enterprise Linux Desktop Optional (v. 6)
  • libssh2-debuginfo-0:1.4.2-3.el6_10.1.i686 as a component of Red Hat Enterprise Linux HPC Node (v. 6)
  • libssh2-debuginfo-0:1.4.2-3.el6_10.1.i686 as a component of Red Hat Enterprise Linux HPC Node Optional (v. 6)
  • libssh2-debuginfo-0:1.4.2-3.el6_10.1.i686 as a component of Red Hat Enterprise Linux Server (v. 6)
  • libssh2-debuginfo-0:1.4.2-3.el6_10.1.i686 as a component of Red Hat Enterprise Linux Server Optional (v. 6)
  • +39 more not shown

✅ Remediation

For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing these updated packages, all running applications using libssh2 must be restarted for this update to take effect.

🔗 References (7)