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TI-2019-13044 Aliases CVE-2019-17498GHSA-h2hf-mx7w-fhwm

In libssh2 v1.9.0 and earlier versions, the SSH_MSG_DISCONNECT logic in packet.c has an…

Priority MEDIUM 42CWE-190Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · None · High
Fix status
Partial Red Hat: 9 fixed, 2 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat.

Summary

In libssh2 v1.9.0 and earlier versions, the SSH_MSG_DISCONNECT logic in packet.c has an integer overflow in a bounds check, enabling an attacker to specify an arbitrary (out-of-bounds) offset for a subsequent memory read. A crafted SSH server may be able to disclose sensitive information or cause a denial of service condition on the client system when a user connects to the server.

Why it matters now

EPSS 0.03807 90th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix Partial Red Hat: 2 advisoriesRed Hat: 9 fixed, 2 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 13

CPEVersionsRoleVendor
cpe:2.3:a:libssh2:libssh2:*:*:*:*:*:*:*:*up to 1.9.0VulnerableThe libssh2 Project
cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*30VulnerableFedoraproject
cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*31VulnerableFedoraproject
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*15.1VulnerableopenSUSE
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*8.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*9.0VulnerableDebian
cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:*not specified by NVDVulnerableNetApp
cpe:2.3:a:netapp:element_software:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
  • cpe:2.3:a:libssh2:libssh2:*:*:*:*:*:*:*:* Versions up to 1.9.0 Vulnerable ·The libssh2 Project
  • cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:* Versions 30 Vulnerable ·Fedoraproject
  • cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* Versions 31 Vulnerable ·Fedoraproject
  • cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* Versions 15.1 Vulnerable ·openSUSE
  • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
  • cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:a:netapp:element_software:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
Show 3 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:o:netapp:bootstrap_os:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:h:netapp:hci_compute_node:-:*:*:*:*:*:*:*not specified by NVDRunning onNetApp
  • cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:o:netapp:bootstrap_os:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:h:netapp:hci_compute_node:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp

Remediation

Red Hat 2 advisories

  • RHSA-2021:0949 Released 2021-03-22 · Red Hat rating Low
    Red Hat OpenShift Do openshift/odo-init-image 1.1.3 security update
    • OpenShift Do 1 openshiftdo/odo-init-image-rhel7
  • RHSA-2020:3915 Released 2020-09-29 · Red Hat rating Moderate
    libssh2 security update
    • Red Hat Enterprise Linux Client (v. 7) libssh2-1.8.0-4.el7
    • Red Hat Enterprise Linux Client Optional (v. 7) libssh2-devel-1.8.0-4.el7, libssh2-docs-1.8.0-4.el7
    • Red Hat Enterprise Linux ComputeNode (v. 7) libssh2-1.8.0-4.el7
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) libssh2-devel-1.8.0-4.el7, libssh2-docs-1.8.0-4.el7
    • Red Hat Enterprise Linux Server (v. 7) libssh2-1.8.0-4.el7, libssh2-1.8.0-4.el7.ppc
    • Red Hat Enterprise Linux Server Optional (v. 7) libssh2-devel-1.8.0-4.el7, libssh2-devel-1.8.0-4.el7.ppc, libssh2-docs-1.8.0-4.el7
    • Red Hat Enterprise Linux Workstation (v. 7) libssh2-1.8.0-4.el7
    • Red Hat Enterprise Linux Workstation Optional (v. 7) libssh2-devel-1.8.0-4.el7, libssh2-docs-1.8.0-4.el7

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 8 Advanced VirtualizationAffectedNo fix planned: Will not fix
OpenShift Do 1Fixed RHSA-2021:0949
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2020:3915
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2020:3915
Red Hat Enterprise Linux ComputeNode (v. 7)Fixed RHSA-2020:3915
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2020:3915
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2020:3915
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2020:3915
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2020:3915
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2020:3915
Not affected: 1 product
  • Red Hat Enterprise Linux 8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2019-17498
  2. 2026-10-03 Alias added: GHSA-h2hf-mx7w-fhwm
  3. 2026-10-30 EPSS moved to the 90th–95th percentile

References

Exploit 2

Patch 1

Advisory 6

Other 3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences