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.
References
Configurations
Configuration 1 (hide)
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Configuration 2 (hide)
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History
24 Nov 2023, 09:15
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22 Nov 2023, 23:15
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21 Nov 2023, 18:15
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14 Nov 2023, 18:20
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CPE | cpe:2.3:a:redhat:storage:3.0:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux_eus:9.0:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:9.0_s390x:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:9.0_ppc64le:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:9.0_ppc64le:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:9.0_s390x:*:*:*:*:*:*:* cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:* |
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First Time |
Redhat
Samba Redhat enterprise Linux For Ibm Z Systems Redhat enterprise Linux For Power Little Endian Eus Redhat enterprise Linux Samba samba Redhat enterprise Linux Eus Redhat enterprise Linux For Power Little Endian Redhat storage Redhat enterprise Linux For Ibm Z Systems Eus |
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References | () https://access.redhat.com/errata/RHSA-2023:6744 - Third Party Advisory | |
References | (MISC) https://access.redhat.com/security/cve/CVE-2023-42669 - Third Party Advisory | |
References | (MISC) https://access.redhat.com/errata/RHSA-2023:6209 - Third Party Advisory | |
References | (MISC) https://bugzilla.redhat.com/show_bug.cgi?id=2241884 - Issue Tracking | |
References | (MISC) https://bugzilla.samba.org/show_bug.cgi?id=15474 - Issue Tracking | |
References | (MISC) https://www.samba.org/samba/security/CVE-2023-42669.html - Vendor Advisory | |
CWE | NVD-CWE-noinfo | |
CVSS |
v2 : v3 : |
v2 : unknown
v3 : 6.5 |
07 Nov 2023, 14:15
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06 Nov 2023, 07:15
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New CVE |
Information
Published : 2023-11-06 07:15
Updated : 2023-12-10 15:14
NVD link : CVE-2023-42669
Mitre link : CVE-2023-42669
CVE.ORG link : CVE-2023-42669
JSON object : View
Products Affected
redhat
- enterprise_linux_for_ibm_z_systems
- enterprise_linux_for_power_little_endian_eus
- enterprise_linux
- enterprise_linux_for_power_little_endian
- enterprise_linux_for_ibm_z_systems_eus
- enterprise_linux_eus
- storage
samba
- samba
CWE