CVE-2023-4091
Samba SMB File Truncation Vulnerability
Description
A vulnerability was discovered in Samba, where the flaw allows SMB clients to truncate files, even with read-only permissions when the Samba VFS module "acl_xattr" is configured with "acl_xattr:ignore system acls = yes". The SMB protocol allows opening files when the client requests read-only access but then implicitly truncates the opened file to 0 bytes if the client specifies a separate OVERWRITE create disposition request. The issue arises in configurations that bypass kernel file system permissions checks, relying solely on Samba's permissions.
INFO
Published Date :
Nov. 3, 2023, 8:15 a.m.
Last Modified :
Sept. 16, 2024, 3:15 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-2023-4091
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-2023-4091.
| URL | Resource |
|---|---|
| https://access.redhat.com/errata/RHSA-2023:6209 | Third Party Advisory |
| https://access.redhat.com/errata/RHSA-2023:6744 | Third Party Advisory |
| https://access.redhat.com/errata/RHSA-2023:7371 | |
| https://access.redhat.com/errata/RHSA-2023:7408 | |
| https://access.redhat.com/errata/RHSA-2023:7464 | |
| https://access.redhat.com/errata/RHSA-2023:7467 | |
| https://access.redhat.com/security/cve/CVE-2023-4091 | Third Party Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=2241882 | Issue Tracking |
| https://bugzilla.samba.org/show_bug.cgi?id=15439 | Issue Tracking |
| https://www.samba.org/samba/security/CVE-2023-4091.html | 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-2023-4091 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2023-4091 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]
Sep. 16, 2024
Action Type Old Value New Value Removed Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/ZUMVALLFFDFC53JZMUWA6HPD7HUGAP5I/ Removed Reference Red Hat, Inc. https://security.netapp.com/advisory/ntap-20231124-0002/ Removed Reference Red Hat, Inc. https://lists.debian.org/debian-lts-announce/2024/04/msg00015.html -
CVE Modified by [email protected]
May. 23, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Apr. 22, 2024
Action Type Old Value New Value Added Reference Red Hat, Inc. https://lists.debian.org/debian-lts-announce/2024/04/msg00015.html [No types assigned] -
CVE Modified by [email protected]
Nov. 24, 2023
Action Type Old Value New Value Added Reference Red Hat, Inc. https://security.netapp.com/advisory/ntap-20231124-0002/ [No types assigned] -
CVE Modified by [email protected]
Nov. 22, 2023
Action Type Old Value New Value Added Reference Red Hat, Inc. https://access.redhat.com/errata/RHSA-2023:7464 [No types assigned] Added Reference Red Hat, Inc. https://access.redhat.com/errata/RHSA-2023:7467 [No types assigned] -
CVE Modified by [email protected]
Nov. 21, 2023
Action Type Old Value New Value Added Reference Red Hat, Inc. https://access.redhat.com/errata/RHSA-2023:7371 [No types assigned] Added Reference Red Hat, Inc. https://access.redhat.com/errata/RHSA-2023:7408 [No types assigned] -
Initial Analysis by [email protected]
Nov. 13, 2023
Action Type Old Value New Value Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N Changed Reference Type https://access.redhat.com/errata/RHSA-2023:6209 No Types Assigned https://access.redhat.com/errata/RHSA-2023:6209 Third Party Advisory Changed Reference Type https://access.redhat.com/errata/RHSA-2023:6744 No Types Assigned https://access.redhat.com/errata/RHSA-2023:6744 Third Party Advisory Changed Reference Type https://access.redhat.com/security/cve/CVE-2023-4091 No Types Assigned https://access.redhat.com/security/cve/CVE-2023-4091 Third Party Advisory Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=2241882 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=2241882 Issue Tracking Changed Reference Type https://bugzilla.samba.org/show_bug.cgi?id=15439 No Types Assigned https://bugzilla.samba.org/show_bug.cgi?id=15439 Issue Tracking Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/ZUMVALLFFDFC53JZMUWA6HPD7HUGAP5I/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/ZUMVALLFFDFC53JZMUWA6HPD7HUGAP5I/ Mailing List Changed Reference Type https://www.samba.org/samba/security/CVE-2023-4091.html No Types Assigned https://www.samba.org/samba/security/CVE-2023-4091.html Vendor Advisory Added CWE NIST CWE-276 Added CPE Configuration OR *cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:* versions up to (excluding) 4.17.12 *cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:* versions from (including) 4.18.0 up to (excluding) 4.18.8 *cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:* versions from (including) 4.19.0 up to (excluding) 4.19.1 Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:a:redhat:storage:3.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_eus:9.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Added Reference Red Hat, Inc. https://access.redhat.com/errata/RHSA-2023:6744 [No types assigned] -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Added CWE Red Hat, Inc. CWE-276 -
CVE Modified by [email protected]
Nov. 03, 2023
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/ZUMVALLFFDFC53JZMUWA6HPD7HUGAP5I/ [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-2023-4091 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-2023-4091
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.12 }} -0.04%
score
0.46428
percentile