RHSA-2019:2136MediumCVSS 5.0

Red Hat Security Advisory: libssh2 security, bug fix, and enhancement update

Published
August 6, 2019
Last Modified
October 14, 2026

🔗 CVE IDs covered (2)

CVE-2019-3858 →CVE-2019-3861 →

📋 Description

CVE-2019-3858 — libssh2: Zero-byte allocation with a specially crafted SFTP packed leading to an out-of-bounds read CVE-2019-3861 — libssh2: Out-of-bounds reads with specially crafted SSH packets

🎯 Affected products68

  • 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)
  • libssh2-0:1.8.0-3.el7.i686 as a component of Red Hat Enterprise Linux Client (v. 7)
  • libssh2-0:1.8.0-3.el7.i686 as a component of Red Hat Enterprise Linux ComputeNode (v. 7)
  • libssh2-0:1.8.0-3.el7.i686 as a component of Red Hat Enterprise Linux Server (v. 7)
  • libssh2-0:1.8.0-3.el7.i686 as a component of Red Hat Enterprise Linux Workstation (v. 7)
  • libssh2-0:1.8.0-3.el7.ppc as a component of Red Hat Enterprise Linux Server (v. 7)
  • libssh2-0:1.8.0-3.el7.ppc64 as a component of Red Hat Enterprise Linux Server (v. 7)
  • libssh2-0:1.8.0-3.el7.ppc64le as a component of Red Hat Enterprise Linux Server (v. 7)
  • libssh2-0:1.8.0-3.el7.s390 as a component of Red Hat Enterprise Linux Server (v. 7)
  • libssh2-0:1.8.0-3.el7.s390x as a component of Red Hat Enterprise Linux Server (v. 7)
  • libssh2-0:1.8.0-3.el7.src as a component of Red Hat Enterprise Linux Client (v. 7)
  • libssh2-0:1.8.0-3.el7.src as a component of Red Hat Enterprise Linux ComputeNode (v. 7)
  • libssh2-0:1.8.0-3.el7.src as a component of Red Hat Enterprise Linux Server (v. 7)
  • libssh2-0:1.8.0-3.el7.src as a component of Red Hat Enterprise Linux Workstation (v. 7)
  • libssh2-0:1.8.0-3.el7.x86_64 as a component of Red Hat Enterprise Linux Client (v. 7)
  • libssh2-0:1.8.0-3.el7.x86_64 as a component of Red Hat Enterprise Linux ComputeNode (v. 7)
  • libssh2-0:1.8.0-3.el7.x86_64 as a component of Red Hat Enterprise Linux Server (v. 7)
  • libssh2-0:1.8.0-3.el7.x86_64 as a component of Red Hat Enterprise Linux Workstation (v. 7)
  • libssh2-debuginfo-0:1.8.0-3.el7.i686 as a component of Red Hat Enterprise Linux Client (v. 7)
  • libssh2-debuginfo-0:1.8.0-3.el7.i686 as a component of Red Hat Enterprise Linux Client Optional (v. 7)
  • libssh2-debuginfo-0:1.8.0-3.el7.i686 as a component of Red Hat Enterprise Linux ComputeNode (v. 7)
  • libssh2-debuginfo-0:1.8.0-3.el7.i686 as a component of Red Hat Enterprise Linux ComputeNode Optional (v. 7)
  • libssh2-debuginfo-0:1.8.0-3.el7.i686 as a component of Red Hat Enterprise Linux Server (v. 7)
  • +38 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 (6)