CVE-2018-16841

Published: Nov 28, 2018 Last Modified: Nov 21, 2024 EU-VD ID: EUVD-2018-8637 Aliases: GSD-2018-16841
ExploitDB:
Other exploit source:
Google Dorks:
MEDIUM 5,7
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: low
User Interaction: required
Scope: unchanged
Confidentiality: none
Integrity: none
Availability: high
MEDIUM 4,0
Source: [email protected]
Access Vector: network
Access Complexity: low
Authentication: single
Confidentiality: none
Integrity: none
Availability: partial

Description

AI Translation Available

Samba from version 4.3.0 and before versions 4.7.12, 4.8.7 and 4.9.3 are vulnerable to a denial of service. When configured to accept smart-card authentication, Samba's KDC will call talloc_free() twice on the same memory if the principal in a validly signed certificate does not match the principal in the AS-REQ. This is only possible after authentication with a trusted certificate. talloc is robust against further corruption from a double-free with talloc_free() and directly calls abort(), terminating the KDC process.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,0942
Percentile
0,9th
Updated

EPSS Score Trend (Last 90 Days)

415

Double Free

Draft
Abstraction: Variant Structure: Simple
Common Consequences
Security Scopes Affected:
Integrity Confidentiality Availability
Potential Impacts:
Modify Memory Execute Unauthorized Code Or Commands
Applicable Platforms
Languages: C, C++, Memory-Unsafe
Likelihood of Exploit: High
View CWE Details
416

Use After Free

Stable
Abstraction: Variant Structure: Simple
Common Consequences
Security Scopes Affected:
Integrity Availability Confidentiality
Potential Impacts:
Modify Memory Dos: Crash, Exit, Or Restart Execute Unauthorized Code Or Commands
Applicable Platforms
Languages: C, C++, Memory-Unsafe
Likelihood of Exploit: High
View CWE Details
Operating System

Ubuntu Linux by Canonical

Product Information
Vendor Canonical
Product Ubuntu Linux
Version 18.10
cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Ubuntu Linux by Canonical

Product Information
Vendor Canonical
Product Ubuntu Linux
Version 18.04
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Samba by Samba

Product Information
Vendor Samba
Product Samba
Version Range Affected
From 4.9.0 (inclusive)
To 4.9.3 (exclusive)
cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Ubuntu Linux by Canonical

Product Information
Vendor Canonical
Product Ubuntu Linux
Version 12.04
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Samba by Samba

Product Information
Vendor Samba
Product Samba
Version Range Affected
From 4.8.0 (inclusive)
To 4.8.7 (exclusive)
cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Samba by Samba

Product Information
Vendor Samba
Product Samba
Version Range Affected
From 4.3.0 (inclusive)
To 4.7.12 (exclusive)
cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Ubuntu Linux by Canonical

Product Information
Vendor Canonical
Product Ubuntu Linux
Version 14.04
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Debian Linux by Debian

Product Information
Vendor Debian
Product Debian Linux
Version 9.0
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Ubuntu Linux by Canonical

Product Information
Vendor Canonical
Product Ubuntu Linux
Version 16.04
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16841
Issue Tracking Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16841
https://security.gentoo.org/glsa/202003-52
Third Party Advisory
https://security.gentoo.org/glsa/202003-52
https://security.netapp.com/advisory/ntap-20181127-0001/
Third Party Advisory
https://security.netapp.com/advisory/ntap-20181127-0001/
https://usn.ubuntu.com/3827-1/
Third Party Advisory
https://usn.ubuntu.com/3827-1/
https://usn.ubuntu.com/3827-2/
Third Party Advisory
https://usn.ubuntu.com/3827-2/
https://www.debian.org/security/2018/dsa-4345
Third Party Advisory
https://www.debian.org/security/2018/dsa-4345
https://www.samba.org/samba/security/CVE-2018-16841.html
Patch Vendor Advisory
https://www.samba.org/samba/security/CVE-2018-16841.html
http://www.securityfocus.com/bid/106023
Third Party Advisory VDB Entry
http://www.securityfocus.com/bid/106023
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16841
Issue Tracking Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16841
https://security.gentoo.org/glsa/202003-52
Third Party Advisory
https://security.gentoo.org/glsa/202003-52
https://security.netapp.com/advisory/ntap-20181127-0001/
Third Party Advisory
https://security.netapp.com/advisory/ntap-20181127-0001/
https://usn.ubuntu.com/3827-1/
Third Party Advisory
https://usn.ubuntu.com/3827-1/
https://usn.ubuntu.com/3827-2/
Third Party Advisory
https://usn.ubuntu.com/3827-2/
https://www.debian.org/security/2018/dsa-4345
Third Party Advisory
https://www.debian.org/security/2018/dsa-4345
https://www.samba.org/samba/security/CVE-2018-16841.html
Patch Vendor Advisory
https://www.samba.org/samba/security/CVE-2018-16841.html
http://www.securityfocus.com/bid/106023
Third Party Advisory VDB Entry
http://www.securityfocus.com/bid/106023