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TI-2016-00696 Aliases CVE-2016-0778GHSA-cqpr-rfm2-cchc

The (1) roaming_read and (2) roaming_write functions in roaming_common.c in the client in…

Priority MEDIUM 56CWE-119Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-119 and the CVSS impact.

Summary

The (1) roaming_read and (2) roaming_write functions in roaming_common.c in the client in OpenSSH 5.x, 6.x, and 7.x before 7.1p2, when certain proxy and forward options are enabled, do not properly maintain connection file descriptors, which allows remote servers to cause a denial of service (heap-based buffer overflow) or possibly have unspecified other impact by requesting many forwardings.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.20898 97th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed Red Hat: 1 advisory

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

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 · 42

CPEVersionsRoleVendor
cpe:2.3:o:oracle:linux:7:*:*:*:*:*:*:*7VulnerableOracle
cpe:2.3:o:oracle:solaris:11.3:*:*:*:*:*:*:*11.3VulnerableOracle
cpe:2.3:a:openbsd:openssh:5.4:*:*:*:*:*:*:*5.4VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:5.4:p1:*:*:*:*:*:*5.4 p1VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:5.5:*:*:*:*:*:*:*5.5VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:5.5:p1:*:*:*:*:*:*5.5 p1VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:5.6:*:*:*:*:*:*:*5.6VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:5.6:p1:*:*:*:*:*:*5.6 p1VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:5.7:*:*:*:*:*:*:*5.7VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:5.7:p1:*:*:*:*:*:*5.7 p1VulnerableOpenBSD
  • cpe:2.3:o:oracle:linux:7:*:*:*:*:*:*:* Versions 7 Vulnerable ·Oracle
  • cpe:2.3:o:oracle:solaris:11.3:*:*:*:*:*:*:* Versions 11.3 Vulnerable ·Oracle
  • cpe:2.3:a:openbsd:openssh:5.4:*:*:*:*:*:*:* Versions 5.4 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:5.4:p1:*:*:*:*:*:* Versions 5.4 p1 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:5.5:*:*:*:*:*:*:* Versions 5.5 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:5.5:p1:*:*:*:*:*:* Versions 5.5 p1 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:5.6:*:*:*:*:*:*:* Versions 5.6 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:5.6:p1:*:*:*:*:*:* Versions 5.6 p1 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:5.7:*:*:*:*:*:*:* Versions 5.7 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:5.7:p1:*:*:*:*:*:* Versions 5.7 p1 Vulnerable ·OpenBSD
Show 32 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:openbsd:openssh:5.8:*:*:*:*:*:*:*5.8VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:5.8:p1:*:*:*:*:*:*5.8 p1VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:5.9:*:*:*:*:*:*:*5.9VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:5.9:p1:*:*:*:*:*:*5.9 p1VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:6.0:*:*:*:*:*:*:*6.0VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:6.0:p1:*:*:*:*:*:*6.0 p1VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:6.1:*:*:*:*:*:*:*6.1VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:6.1:p1:*:*:*:*:*:*6.1 p1VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:6.2:*:*:*:*:*:*:*6.2VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:6.2:p1:*:*:*:*:*:*6.2 p1VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:6.2:p2:*:*:*:*:*:*6.2 p2VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:6.3:*:*:*:*:*:*:*6.3VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:6.3:p1:*:*:*:*:*:*6.3 p1VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:6.4:*:*:*:*:*:*:*6.4VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:6.4:p1:*:*:*:*:*:*6.4 p1VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:6.5:*:*:*:*:*:*:*6.5VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:6.5:p1:*:*:*:*:*:*6.5 p1VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:6.6:*:*:*:*:*:*:*6.6VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:6.6:p1:*:*:*:*:*:*6.6 p1VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:6.7:*:*:*:*:*:*:*6.7VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:6.7:p1:*:*:*:*:*:*6.7 p1VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:6.8:*:*:*:*:*:*:*6.8VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:6.8:p1:*:*:*:*:*:*6.8 p1VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:6.9:*:*:*:*:*:*:*6.9VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:6.9:p1:*:*:*:*:*:*6.9 p1VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:7.0:*:*:*:*:*:*:*7.0VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:7.0:p1:*:*:*:*:*:*7.0 p1VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:7.1:*:*:*:*:*:*:*7.1VulnerableOpenBSD
cpe:2.3:a:openbsd:openssh:7.1:p1:*:*:*:*:*:*7.1 p1VulnerableOpenBSD
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*10.9.0 – 10.9.5; 10.10.0 – 10.10.5; 10.11.0 – 10.11.3VulnerableApple
cpe:2.3:o:hp:virtual_customer_access_system:*:*:*:*:*:*:*:*up to 15.07VulnerableHewlett Packard Enterprise
cpe:2.3:a:sophos:unified_threat_management_software:9.353:*:*:*:*:*:*:*9.353VulnerableSophos
  • cpe:2.3:a:openbsd:openssh:5.8:*:*:*:*:*:*:* Versions 5.8 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:5.8:p1:*:*:*:*:*:* Versions 5.8 p1 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:5.9:*:*:*:*:*:*:* Versions 5.9 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:5.9:p1:*:*:*:*:*:* Versions 5.9 p1 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:6.0:p1:*:*:*:*:*:* Versions 6.0 p1 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:6.1:*:*:*:*:*:*:* Versions 6.1 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:6.1:p1:*:*:*:*:*:* Versions 6.1 p1 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:6.2:*:*:*:*:*:*:* Versions 6.2 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:6.2:p1:*:*:*:*:*:* Versions 6.2 p1 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:6.2:p2:*:*:*:*:*:* Versions 6.2 p2 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:6.3:*:*:*:*:*:*:* Versions 6.3 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:6.3:p1:*:*:*:*:*:* Versions 6.3 p1 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:6.4:*:*:*:*:*:*:* Versions 6.4 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:6.4:p1:*:*:*:*:*:* Versions 6.4 p1 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:6.5:*:*:*:*:*:*:* Versions 6.5 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:6.5:p1:*:*:*:*:*:* Versions 6.5 p1 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:6.6:*:*:*:*:*:*:* Versions 6.6 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:6.6:p1:*:*:*:*:*:* Versions 6.6 p1 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:6.7:*:*:*:*:*:*:* Versions 6.7 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:6.7:p1:*:*:*:*:*:* Versions 6.7 p1 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:6.8:*:*:*:*:*:*:* Versions 6.8 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:6.8:p1:*:*:*:*:*:* Versions 6.8 p1 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:6.9:*:*:*:*:*:*:* Versions 6.9 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:6.9:p1:*:*:*:*:*:* Versions 6.9 p1 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:7.0:p1:*:*:*:*:*:* Versions 7.0 p1 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:7.1:*:*:*:*:*:*:* Versions 7.1 Vulnerable ·OpenBSD
  • cpe:2.3:a:openbsd:openssh:7.1:p1:*:*:*:*:*:* Versions 7.1 p1 Vulnerable ·OpenBSD
  • cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:* Versions 10.9.0 – 10.9.5; 10.10.0 – 10.10.5; 10.11.0 – 10.11.3 Vulnerable ·Apple
  • cpe:2.3:o:hp:virtual_customer_access_system:*:*:*:*:*:*:*:* Versions up to 15.07 Vulnerable ·Hewlett Packard Enterprise
  • cpe:2.3:a:sophos:unified_threat_management_software:9.353:*:*:*:*:*:*:* Versions 9.353 Vulnerable ·Sophos

Remediation

Red Hat 1 advisory

  • RHSA-2016:0043 Released 2016-01-14 · Red Hat rating Moderate
    openssh security update
    • Red Hat Enterprise Linux Client (v. 7) openssh-6.6.1p1-23.el7_2, openssh-askpass-6.6.1p1-23.el7_2, openssh-clients-6.6.1p1-23.el7_2 +2
    • Red Hat Enterprise Linux Client Optional (v. 7) openssh-ldap-6.6.1p1-23.el7_2, openssh-server-sysvinit-6.6.1p1-23.el7_2, pam_ssh_agent_auth-0.9.3-9.23.el7_2
    • Red Hat Enterprise Linux ComputeNode (v. 7) openssh-6.6.1p1-23.el7_2, openssh-clients-6.6.1p1-23.el7_2, openssh-keycat-6.6.1p1-23.el7_2 +1
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) openssh-askpass-6.6.1p1-23.el7_2, openssh-ldap-6.6.1p1-23.el7_2, openssh-server-sysvinit-6.6.1p1-23.el7_2 +1
    • Red Hat Enterprise Linux Server (v. 7) openssh-6.6.1p1-23.el7_2, openssh-askpass-6.6.1p1-23.el7_2, openssh-clients-6.6.1p1-23.el7_2 +2
    • Red Hat Enterprise Linux Server Optional (v. 7) openssh-ldap-6.6.1p1-23.el7_2, openssh-server-sysvinit-6.6.1p1-23.el7_2, pam_ssh_agent_auth-0.9.3-9.23.el7_2 +1
    • Red Hat Enterprise Linux Workstation (v. 7) openssh-6.6.1p1-23.el7_2, openssh-askpass-6.6.1p1-23.el7_2, openssh-clients-6.6.1p1-23.el7_2 +2
    • Red Hat Enterprise Linux Workstation Optional (v. 7) openssh-ldap-6.6.1p1-23.el7_2, openssh-server-sysvinit-6.6.1p1-23.el7_2, pam_ssh_agent_auth-0.9.3-9.23.el7_2

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2016:0043
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2016:0043
Red Hat Enterprise Linux ComputeNode (v. 7)Fixed RHSA-2016:0043
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2016:0043
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2016:0043
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2016:0043
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2016:0043
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2016:0043
Not affected: 3 products
  • Red Hat Enterprise Linux 4
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6

Timeline

  1. 2026-10-02 Threatist record created from CVE-2016-0778
  2. 2026-10-03 Alias added: GHSA-cqpr-rfm2-cchc

References

Exploit 1

Patch 1

Advisory 25

Other 1

Sources

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