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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2023-42669 Detail

Description

A vulnerability was found in Samba's "rpcecho" development server, a non-Windows RPC server used to test Samba's DCE/RPC stack elements. This vulnerability stems from an RPC function that can be blocked indefinitely. The issue arises because the "rpcecho" service operates with only one worker in the main RPC task, allowing calls to the "rpcecho" server to be blocked for a specified time, causing service disruptions. This disruption is triggered by a "sleep()" call in the "dcesrv_echo_TestSleep()" function under specific conditions. Authenticated users or attackers can exploit this vulnerability to make calls to the "rpcecho" server, requesting it to block for a specified duration, effectively disrupting most services and leading to a complete denial of service on the AD DC. The DoS affects all other services as "rpcecho" runs in the main RPC task.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink 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-2023-42669 Third Party Advisory 
https://bugzilla.redhat.com/show_bug.cgi?id=2241884 Issue Tracking 
https://bugzilla.samba.org/show_bug.cgi?id=15474 Issue Tracking 
https://www.samba.org/samba/security/CVE-2023-42669.html Vendor Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
NVD-CWE-noinfo Insufficient Information cwe source acceptance level NIST  
CWE-400 Uncontrolled Resource Consumption Red Hat, Inc.  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

9 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2023-42669
NVD Published Date:
11/06/2023
NVD Last Modified:
09/16/2024
Source:
Red Hat, Inc.