CVE-2018-16841
Samba KDC Memory Corruption DoS Vulnerability
Description
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.
INFO
Published Date :
Nov. 28, 2018, 2:29 p.m.
Last Modified :
Aug. 29, 2022, 8:04 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
2.8
Affected Products
The following products are affected by CVE-2018-16841
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2018-16841.
| URL | Resource |
|---|---|
| http://www.securityfocus.com/bid/106023 | VDB Entry Third Party Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16841 | Issue Tracking Third Party Advisory |
| https://security.gentoo.org/glsa/202003-52 | Third Party Advisory |
| https://security.netapp.com/advisory/ntap-20181127-0001/ | Third Party Advisory |
| https://usn.ubuntu.com/3827-1/ | Third Party Advisory |
| https://usn.ubuntu.com/3827-2/ | Third Party Advisory |
| https://www.debian.org/security/2018/dsa-4345 | Third Party Advisory |
| https://www.samba.org/samba/security/CVE-2018-16841.html | Patch Vendor Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2018-16841 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2018-16841 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Modified Analysis by [email protected]
Aug. 29, 2022
Action Type Old Value New Value Removed CVSS V3 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://security.gentoo.org/glsa/202003-52 No Types Assigned https://security.gentoo.org/glsa/202003-52 Third Party Advisory Changed CPE Configuration OR *cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:* versions from (including) 4.3.0 up to (excluding) 4.7.12 *cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:* versions from (including) 4.8.0 up to (excluding) 4.8.7 *cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:* versions from (including) 4.8.8 up to (excluding) 4.9.3 OR *cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:* versions from (including) 4.3.0 up to (excluding) 4.7.12 *cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:* versions from (including) 4.8.0 up to (excluding) 4.8.7 *cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:* versions from (including) 4.9.0 up to (excluding) 4.9.3 -
CVE Modified by [email protected]
Mar. 25, 2020
Action Type Old Value New Value Added Reference https://security.gentoo.org/glsa/202003-52 [No Types Assigned] -
CVE Modified by [email protected]
Oct. 09, 2019
Action Type Old Value New Value Added CVSS V3 Red Hat, Inc. AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H Added CWE Red Hat, Inc. CWE-416 -
Initial Analysis by [email protected]
Feb. 04, 2019
Action Type Old Value New Value Added CVSS V2 (AV:N/AC:L/Au:S/C:N/I:N/A:P) Added CVSS V3 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Changed Reference Type http://www.securityfocus.com/bid/106023 No Types Assigned http://www.securityfocus.com/bid/106023 Third Party Advisory, VDB Entry Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16841 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16841 Issue Tracking, Third Party Advisory Changed Reference Type https://security.netapp.com/advisory/ntap-20181127-0001/ No Types Assigned https://security.netapp.com/advisory/ntap-20181127-0001/ Third Party Advisory Changed Reference Type https://www.debian.org/security/2018/dsa-4345 No Types Assigned https://www.debian.org/security/2018/dsa-4345 Third Party Advisory Changed Reference Type https://usn.ubuntu.com/3827-1/ No Types Assigned https://usn.ubuntu.com/3827-1/ Third Party Advisory Changed Reference Type https://usn.ubuntu.com/3827-2/ No Types Assigned https://usn.ubuntu.com/3827-2/ Third Party Advisory Changed Reference Type https://www.samba.org/samba/security/CVE-2018-16841.html No Types Assigned https://www.samba.org/samba/security/CVE-2018-16841.html Patch, Vendor Advisory Added CWE CWE-415 Added CPE Configuration OR *cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:* versions from (including) 4.3.0 up to (excluding) 4.7.12 *cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:* versions from (including) 4.8.0 up to (excluding) 4.8.7 *cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:* versions from (including) 4.8.8 up to (excluding) 4.9.3 Added CPE Configuration OR *cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Nov. 29, 2018
Action Type Old Value New Value Added Reference https://www.debian.org/security/2018/dsa-4345 [No Types Assigned] Added Reference https://usn.ubuntu.com/3827-2/ [No Types Assigned] Added Reference https://usn.ubuntu.com/3827-1/ [No Types Assigned] Added Reference https://security.netapp.com/advisory/ntap-20181127-0001/ [No Types Assigned] Added Reference http://www.securityfocus.com/bid/106023 [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2018-16841 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2018-16841
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
1.17 }} 0.34%
score
0.85141
percentile