PT-2017-18935 · Samba+4 · Samba+4

Published 2017-03-08 · Updated 2019-10-03 · CVE-2017-9461

Positive Technologies (AI Summary)

CVSS v2.0

6.8

Medium

Base vector

AV:N/AC:L/Au:S/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions Samba versions prior to 4.4.10 Samba versions 4.5.x prior to 4.5.6

Description The issue is related to a denial of service due to the incorrect handling of dangling symlinks by smbd in Samba. This results in an infinite loop with high CPU usage and memory consumption.

Recommendations For Samba versions prior to 4.4.10, update to version 4.4.10 or later. For Samba versions 4.5.x prior to 4.5.6, update to version 4.5.6 or later.

Exploit

Fix

DoS

Infinite Loop

Weakness Enumeration

CWE-835

Related Identifiers

ALT-PU-2017-1255

CESA-2017_1950

CVE-2017-9461

DLA-1754-1

ECHO-EBB3-4541-C7BC

RHSA-2017:1950

RHSA-2017:2338

RHSA-2017:2778

RHSA-2017_1950

USN-3348-1

Affected Products

Alt Linux

Centos

Red Hat

Samba

Ubuntu

References · 19

• 🔥 https://bugs.debian.org/864291 · Exploit
• 🔥 https://bugzilla.samba.org/show_bug.cgi?id=12572 · Exploit
• https://access.redhat.com/errata/RHSA-2017:2778 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2017-9461 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2017-9461 · Security Note
• https://ubuntu.com/security/notices/USN-3348-1 · Vendor Advisory
• https://access.redhat.com/errata/RHSA-2017:2338 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2017-9461 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2017-9461 · Security Note
• https://linux.oracle.com/errata/ELSA-2017-1950.html · Vendor Advisory
• https://osv.dev/vulnerability/USN-3348-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2017-9461 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-9461 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2017-9461 · Vendor Advisory
• https://osv.dev/vulnerability/DLA-1754-1 · Vendor Advisory