CVE-2023-42669

CVSS V2 None CVSS V3 None
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.
Overview
  • CVE ID
  • CVE-2023-42669
  • Assigner
  • redhat
  • Vulnerability Status
  • PUBLISHED
  • Published Version
  • 2023-11-06T06:57:28.981Z
  • Last Modified Date
  • 2024-05-23T21:18:30.190Z
Weakness Enumerations
CWE URL
CWE-400 http://cwe.mitre.org/data/definitions/400.html
References
Reference URL Reference Tags
https://access.redhat.com/errata/RHSA-2023:6209 vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2023:6744 vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2023:7371 vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2023:7408 vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2023:7464 vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2023:7467 vendor-advisory x_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2023-42669 vdb-entry x_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2241884 issue-tracking x_refsource_REDHAT
https://bugzilla.samba.org/show_bug.cgi?id=15474
https://security.netapp.com/advisory/ntap-20231124-0002/
https://www.samba.org/samba/security/CVE-2023-42669.html
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2023-42669
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-42669
History
Created Old Value New Value Data Type Notes
2024-06-25 14:15:53 Added to TrackCVE