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TI-2016-08749 Aliases CVE-2016-10708GHSA-fq52-jg4q-73hp

sshd in OpenSSH before 7.4 allows remote attackers to cause a denial of service (NULL…

Priority MEDIUM 55CWE-476Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 8 fixed, 2 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-476.

Summary

sshd in OpenSSH before 7.4 allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via an out-of-sequence NEWKEYS message, as demonstrated by Honggfuzz, related to kex.c and packet.c.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.15716 96th percentileScored 2026-11-07
Fix Partial Red Hat: 1 advisoryRed Hat: 8 fixed, 2 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

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

CPE configurations NVD · 16

CPEVersionsRoleVendor
cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:*before 7.4VulnerableOpenBSD
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*7.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*8.0VulnerableDebian
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*14.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*16.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:*:*:*:*18.04VulnerableCanonical
cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:a:netapp:data_ontap:-:*:*:*:*:7-mode:*:*not specified by NVDVulnerableNetApp
cpe:2.3:a:netapp:data_ontap_edge:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:a:netapp:oncommand_unified_manager:*:*:*:*:*:vsphere:*:*9.4VulnerableNetApp
  • cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:* Versions before 7.4 Vulnerable ·OpenBSD
  • cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
  • cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* Versions 14.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* Versions 16.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:*:*:*:* Versions 18.04 Vulnerable ·Canonical
  • cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:a:netapp:data_ontap:-:*:*:*:*:7-mode:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:a:netapp:data_ontap_edge:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:a:netapp:oncommand_unified_manager:*:*:*:*:*:vsphere:*:* Versions 9.4 Vulnerable ·NetApp
Show 6 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:netapp:service_processor:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:a:netapp:storagegrid:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:a:netapp:storagegrid_webscale:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:o:netapp:clustered_data_ontap:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:a:netapp:vasa_provider:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:o:netapp:clustered_data_ontap:-:*:*:*:*:*:*:*not specified by NVDRunning onNetApp
  • cpe:2.3:a:netapp:service_processor:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:a:netapp:storagegrid:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:a:netapp:storagegrid_webscale:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:o:netapp:clustered_data_ontap:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:a:netapp:vasa_provider:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:o:netapp:clustered_data_ontap:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp

Remediation

Red Hat 1 advisory

  • RHSA-2017:2029 Released 2017-08-01 · Red Hat rating Moderate
    openssh security, bug fix, and enhancement update
    • Red Hat Enterprise Linux Client (v. 7) openssh-7.4p1-11.el7, openssh-askpass-7.4p1-11.el7, openssh-clients-7.4p1-11.el7 +2
    • Red Hat Enterprise Linux Client Optional (v. 7) openssh-cavs-7.4p1-11.el7, openssh-ldap-7.4p1-11.el7, openssh-server-sysvinit-7.4p1-11.el7 +1
    • Red Hat Enterprise Linux ComputeNode (v. 7) openssh-7.4p1-11.el7, openssh-clients-7.4p1-11.el7, openssh-keycat-7.4p1-11.el7 +1
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) openssh-askpass-7.4p1-11.el7, openssh-cavs-7.4p1-11.el7, openssh-ldap-7.4p1-11.el7 +2
    • Red Hat Enterprise Linux Server (v. 7) openssh-7.4p1-11.el7, openssh-askpass-7.4p1-11.el7, openssh-clients-7.4p1-11.el7 +2
    • Red Hat Enterprise Linux Server Optional (v. 7) openssh-cavs-7.4p1-11.el7, openssh-ldap-7.4p1-11.el7, openssh-server-sysvinit-7.4p1-11.el7 +2
    • Red Hat Enterprise Linux Workstation (v. 7) openssh-7.4p1-11.el7, openssh-askpass-7.4p1-11.el7, openssh-clients-7.4p1-11.el7 +2
    • Red Hat Enterprise Linux Workstation Optional (v. 7) openssh-cavs-7.4p1-11.el7, openssh-ldap-7.4p1-11.el7, openssh-server-sysvinit-7.4p1-11.el7 +1

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 5AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2017:2029
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2017:2029
Red Hat Enterprise Linux ComputeNode (v. 7)Fixed RHSA-2017:2029
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2017:2029
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2017:2029
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2017:2029
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2017:2029
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2017:2029
Not affected: 1 product
  • Red Hat Enterprise Linux 8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2016-10708
  2. 2026-10-03 Alias added: GHSA-fq52-jg4q-73hp

References

Patch 2

Advisory 5

Other 3

Sources

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