vulnerability

SUSE: CVE-2023-42669: SUSE Linux Security Advisory

Severity
7
CVSS
(AV:N/AC:L/Au:S/C:N/I:N/A:C)
Published
Oct 11, 2023
Added
Oct 12, 2023
Modified
Jan 28, 2025

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.

Solution(s)

suse-upgrade-ctdbsuse-upgrade-ctdb-pcp-pmdasuse-upgrade-libsamba-policy-develsuse-upgrade-libsamba-policy-python3-develsuse-upgrade-libsamba-policy0-python3suse-upgrade-libsamba-policy0-python3-32bitsuse-upgrade-sambasuse-upgrade-samba-ad-dcsuse-upgrade-samba-ad-dc-libssuse-upgrade-samba-ad-dc-libs-32bitsuse-upgrade-samba-cephsuse-upgrade-samba-clientsuse-upgrade-samba-client-32bitsuse-upgrade-samba-client-libssuse-upgrade-samba-client-libs-32bitsuse-upgrade-samba-develsuse-upgrade-samba-devel-32bitsuse-upgrade-samba-docsuse-upgrade-samba-dsdb-modulessuse-upgrade-samba-gpupdatesuse-upgrade-samba-ldb-ldapsuse-upgrade-samba-libssuse-upgrade-samba-libs-32bitsuse-upgrade-samba-libs-python3suse-upgrade-samba-libs-python3-32bitsuse-upgrade-samba-python3suse-upgrade-samba-testsuse-upgrade-samba-toolsuse-upgrade-samba-winbindsuse-upgrade-samba-winbind-libssuse-upgrade-samba-winbind-libs-32bit
Title
NEW

Explore Exposure Command

Confidently identify and prioritize exposures from endpoint to cloud with full attack surface visibility and threat-aware risk context.