Read the docs
TI-2017-06869 Aliases CVE-2017-9461GHSA-p3px-2xx5-xmgx

smbd in Samba before 4.4.10 and 4.5.x before 4.5.6 has a denial of service vulnerability…

Priority LOW 36CWE-835Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 11 fixed, 1 without a fix

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-835.

Summary

smbd in Samba before 4.4.10 and 4.5.x before 4.5.6 has a denial of service vulnerability (fd_open_atomic infinite loop with high CPU usage and memory consumption) due to wrongly handling dangling symlinks.

Why it matters now

EPSS 0.04228 91st percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix Partial Red Hat: 3 advisoriesRed Hat: 11 fixed, 1 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 · 17

CPEVersionsRoleVendor
cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*up to 4.4.9VulnerableSamba
cpe:2.3:a:samba:samba:4.5.0:*:*:*:*:*:*:*4.5.0VulnerableSamba
cpe:2.3:a:samba:samba:4.5.1:*:*:*:*:*:*:*4.5.1VulnerableSamba
cpe:2.3:a:samba:samba:4.5.2:*:*:*:*:*:*:*4.5.2VulnerableSamba
cpe:2.3:a:samba:samba:4.5.3:*:*:*:*:*:*:*4.5.3VulnerableSamba
cpe:2.3:a:samba:samba:4.5.4:*:*:*:*:*:*:*4.5.4VulnerableSamba
cpe:2.3:a:samba:samba:4.5.5:*:*:*:*:*:*:*4.5.5VulnerableSamba
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:*7.4VulnerableRed Hat
  • cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:* Versions up to 4.4.9 Vulnerable ·Samba
  • cpe:2.3:a:samba:samba:4.5.0:*:*:*:*:*:*:* Versions 4.5.0 Vulnerable ·Samba
  • cpe:2.3:a:samba:samba:4.5.1:*:*:*:*:*:*:* Versions 4.5.1 Vulnerable ·Samba
  • cpe:2.3:a:samba:samba:4.5.2:*:*:*:*:*:*:* Versions 4.5.2 Vulnerable ·Samba
  • cpe:2.3:a:samba:samba:4.5.3:*:*:*:*:*:*:* Versions 4.5.3 Vulnerable ·Samba
  • cpe:2.3:a:samba:samba:4.5.4:*:*:*:*:*:*:* Versions 4.5.4 Vulnerable ·Samba
  • cpe:2.3:a:samba:samba:4.5.5:*:*:*:*:*:*:* Versions 4.5.5 Vulnerable ·Samba
  • cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:* Versions 7.4 Vulnerable ·Red Hat
Show 7 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*7.6VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:*7.4VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:*7.5VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:*7.6VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*7.6VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*8.0VulnerableDebian
  • cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:* Versions 7.6 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:* Versions 7.4 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:* Versions 7.5 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:* Versions 7.6 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:* Versions 7.6 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian

Remediation

Red Hat 3 advisories

  • RHSA-2017:2778 Released 2017-09-21 · Red Hat rating Moderate
    samba security, bug fix, and enhancement update
    • Red Hat Gluster 3.3 Samba on RHEL-6 ctdb-4.6.3-5.el6rhs, ctdb-tests-4.6.3-5.el6rhs, ldb-tools-1.1.29-1.el6rhs +39
  • RHSA-2017:1950 Released 2017-08-01 · Red Hat rating Low
    samba security, bug fix, and enhancement update
    • Red Hat Enterprise Linux Client (v. 7) libsmbclient-4.6.2-8.el7, libwbclient-4.6.2-8.el7, samba-4.6.2-8.el7 +10
    • Red Hat Enterprise Linux Client Optional (v. 7) libsmbclient-devel-4.6.2-8.el7, libwbclient-devel-4.6.2-8.el7, samba-4.6.2-8.el7 +9
    • Red Hat Enterprise Linux ComputeNode (v. 7) libsmbclient-4.6.2-8.el7, libwbclient-4.6.2-8.el7, samba-4.6.2-8.el7 +9
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) libsmbclient-devel-4.6.2-8.el7, libwbclient-devel-4.6.2-8.el7, samba-4.6.2-8.el7 +10
    • Red Hat Enterprise Linux Server (v. 7) libsmbclient-4.6.2-8.el7, libsmbclient-4.6.2-8.el7.ppc, libwbclient-4.6.2-8.el7 +16
    • Red Hat Enterprise Linux Server Optional (v. 7) libsmbclient-devel-4.6.2-8.el7, libsmbclient-devel-4.6.2-8.el7.ppc, libwbclient-devel-4.6.2-8.el7 +12
    • Red Hat Enterprise Linux Server Resilient Storage (v. 7) ctdb-4.6.2-8.el7, ctdb-tests-4.6.2-8.el7
    • Red Hat Enterprise Linux Workstation (v. 7) libsmbclient-4.6.2-8.el7, libwbclient-4.6.2-8.el7, samba-4.6.2-8.el7 +11
    • Red Hat Enterprise Linux Workstation Optional (v. 7) libsmbclient-devel-4.6.2-8.el7, libwbclient-devel-4.6.2-8.el7, samba-dc-4.6.2-8.el7 +7
  • RHSA-2017:2338 Released 2017-08-01 · Red Hat rating Moderate
    samba security update
    • Red Hat Gluster 3.2 Samba on RHEL-7 ctdb-4.6.3-4.el7rhgs, ctdb-tests-4.6.3-4.el7rhgs, libsmbclient-4.6.3-4.el7rhgs +23

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2017:1950
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2017:1950
Red Hat Enterprise Linux ComputeNode (v. 7)Fixed RHSA-2017:1950
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2017:1950
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2017:1950
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2017:1950
Red Hat Enterprise Linux Server Resilient Storage (v. 7)Fixed RHSA-2017:1950
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2017:1950
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2017:1950
Red Hat Gluster 3.2 Samba on RHEL-7Fixed RHSA-2017:2338
Red Hat Gluster 3.3 Samba on RHEL-6Fixed RHSA-2017:2778
Not affected: 2 products
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6

Timeline

  1. 2026-10-02 Threatist record created from CVE-2017-9461
  2. 2026-10-03 Alias added: GHSA-p3px-2xx5-xmgx

References

Exploit 2

Advisory 4

Other 1

Sources

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