RHSA-2019:0679HighCVSS 7.5

Red Hat Security Advisory: libssh2 security update

Published
March 28, 2019
Last Modified
October 14, 2026

🔗 CVE IDs covered (4)

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

📋 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 products88

  • Red Hat Enterprise Linux Client (v. 7)
  • Red Hat Enterprise Linux Client Optional (v. 7)
  • Red Hat Enterprise Linux ComputeNode (v. 7)
  • Red Hat Enterprise Linux ComputeNode Optional (v. 7)
  • Red Hat Enterprise Linux Server (v. 7)
  • Red Hat Enterprise Linux Server Optional (v. 7)
  • Red Hat Enterprise Linux Workstation (v. 7)
  • Red Hat Enterprise Linux Workstation Optional (v. 7)
  • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7)
  • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7)
  • libssh2-0:1.4.3-12.el7_6.2.aarch64 as a component of Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7)
  • libssh2-0:1.4.3-12.el7_6.2.i686 as a component of Red Hat Enterprise Linux Client (v. 7)
  • libssh2-0:1.4.3-12.el7_6.2.i686 as a component of Red Hat Enterprise Linux ComputeNode (v. 7)
  • libssh2-0:1.4.3-12.el7_6.2.i686 as a component of Red Hat Enterprise Linux Server (v. 7)
  • libssh2-0:1.4.3-12.el7_6.2.i686 as a component of Red Hat Enterprise Linux Workstation (v. 7)
  • libssh2-0:1.4.3-12.el7_6.2.ppc as a component of Red Hat Enterprise Linux Server (v. 7)
  • libssh2-0:1.4.3-12.el7_6.2.ppc64 as a component of Red Hat Enterprise Linux Server (v. 7)
  • libssh2-0:1.4.3-12.el7_6.2.ppc64le as a component of Red Hat Enterprise Linux Server (v. 7)
  • libssh2-0:1.4.3-12.el7_6.2.ppc64le as a component of Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7)
  • libssh2-0:1.4.3-12.el7_6.2.s390 as a component of Red Hat Enterprise Linux Server (v. 7)
  • libssh2-0:1.4.3-12.el7_6.2.s390 as a component of Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7)
  • libssh2-0:1.4.3-12.el7_6.2.s390x as a component of Red Hat Enterprise Linux Server (v. 7)
  • libssh2-0:1.4.3-12.el7_6.2.s390x as a component of Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7)
  • libssh2-0:1.4.3-12.el7_6.2.src as a component of Red Hat Enterprise Linux Client (v. 7)
  • libssh2-0:1.4.3-12.el7_6.2.src as a component of Red Hat Enterprise Linux ComputeNode (v. 7)
  • libssh2-0:1.4.3-12.el7_6.2.src as a component of Red Hat Enterprise Linux Server (v. 7)
  • libssh2-0:1.4.3-12.el7_6.2.src as a component of Red Hat Enterprise Linux Workstation (v. 7)
  • libssh2-0:1.4.3-12.el7_6.2.src as a component of Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7)
  • libssh2-0:1.4.3-12.el7_6.2.x86_64 as a component of Red Hat Enterprise Linux Client (v. 7)
  • libssh2-0:1.4.3-12.el7_6.2.x86_64 as a component of Red Hat Enterprise Linux ComputeNode (v. 7)
  • +58 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)