PT-2018-2509 · Samba+3 · Samba+3

Garming Sam · Published 2018-11-20 · Updated 2024-06-15 · CVE-2018-16851

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Samba versions 4.0.0 through 4.7.11 Samba versions 4.8.0 through 4.8.6 Samba versions 4.9.0 through 4.9.2

Description The issue is related to a denial of service in Samba's LDAP search functionality. It occurs when the maximum size of cached search results, which is 256MB, is reached, causing the Samba process to follow a NULL pointer and terminate. This can be exploited by a remote attacker to cause a denial of service.

Recommendations For Samba versions 4.0.0 through 4.7.11, update to version 4.7.12 or later. For Samba versions 4.8.0 through 4.8.6, update to version 4.8.7 or later. For Samba versions 4.9.0 through 4.9.2, update to version 4.9.3 or later.

Fix

DoS

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

ALT-PU-2018-2743

ALT-PU-2018-2744

BDU:2019-00879

CVE-2018-16851

DLA-1607-1

DSA-4345-1

ECHO-C8C0-89CD-58D0

MGASA-2019-0011

OPENSUSE-SU-2024:11365-1

SUSE-SU-2018:4066-1

USN-3827-1

USN-3827-2

Affected Products

Alt Linux

Samba

Suse

Ubuntu

References · 123

• https://ubuntu.com/security/notices/USN-3827-2 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-16851 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2018-16851 · Vendor Advisory
• https://osv.dev/vulnerability/ALPINE-CVE-2018-16851 · Vendor Advisory
• https://debian.org/security/2018/dsa-4345 · Vendor Advisory
• https://samba.org/samba/security/CVE-2018-16851.html · Vendor Advisory
• https://bdu.fstec.ru/vul/2019-00879 · Security Note
• https://usn.ubuntu.com/3827-2 · Vendor Advisory
• https://security.gentoo.org/glsa/202003-52 · Vendor Advisory
• https://usn.ubuntu.com/3827-1 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2019-0011 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-3827-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2018:4066-1 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2019-0011.html · Security Note
• https://osv.dev/vulnerability/DSA-4345-1 · Vendor Advisory