CVE catalog
CVE-2023-42669
samba: CVE-2023-42669
- Severity
- Medium · CVSS 6.5
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 1.94% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | samba | sid | 2:4.25.1+dfsg-1 | fixed |
| Debian | samba | forky | 2:4.25.1+dfsg-1 | fixed |
| Debian | samba | trixie | 2:4.22.11+dfsg-0+deb13u1 | fixed |
| Debian | samba | trixie-security | 2:4.22.10+dfsg-0+deb13u2 | fixed |
| Debian | samba | bookworm | 2:4.17.12+dfsg-0+deb12u4 | fixed |
| Debian | samba | bookworm-security | 2:4.17.12+dfsg-0+deb12u4 | fixed |
| Alpine | samba | 3.18 | 4.18.8-r0 | fixed |
| Alpine | samba | 3.19 | 4.18.8-r0 | fixed |
| Alpine | samba | 3.20 | 4.18.8-r0 | fixed |
| Alpine | samba | 3.21 | 4.18.8-r0 | fixed |
| Alpine | samba | 3.22 | 4.18.8-r0 | fixed |
| Alpine | samba | 3.23 | 4.18.8-r0 | fixed |
| Alpine | samba | 3.24 | 4.18.8-r0 | fixed |
| Ubuntu | samba | pro | 2:4.6.7+dfsg-1ubuntu3 | vulnerable |
| Ubuntu | samba | pro | 2:4.7.1+dfsg-1ubuntu1 | vulnerable |
| Ubuntu | samba | pro | 2:4.7.3+dfsg-1ubuntu1 | vulnerable |
| Ubuntu | samba | pro | 2:4.7.4+dfsg-1ubuntu1 | vulnerable |
| Ubuntu | samba | pro | 2:4.7.6+dfsg~ubuntu-0ubuntu1 | vulnerable |
| Ubuntu | samba | pro | 2:4.7.6+dfsg~ubuntu-0ubuntu2 | vulnerable |
| Ubuntu | samba | pro | 2:4.7.6+dfsg~ubuntu-0ubuntu2.2 | vulnerable |
| Ubuntu | samba | pro | 2:4.7.6+dfsg~ubuntu-0ubuntu2.4 | vulnerable |
| Ubuntu | samba | pro | 2:4.7.6+dfsg~ubuntu-0ubuntu2.5 | vulnerable |
| Ubuntu | samba | pro | 2:4.7.6+dfsg~ubuntu-0ubuntu2.6 | vulnerable |
| Ubuntu | samba | pro | 2:4.7.6+dfsg~ubuntu-0ubuntu2.7 | vulnerable |
| Ubuntu | samba | pro | 2:4.7.6+dfsg~ubuntu-0ubuntu2.9 | vulnerable |
| Ubuntu | samba | pro | 2:4.7.6+dfsg~ubuntu-0ubuntu2.10 | vulnerable |
| Ubuntu | samba | pro | 2:4.7.6+dfsg~ubuntu-0ubuntu2.11 | vulnerable |
| Ubuntu | samba | pro | 2:4.7.6+dfsg~ubuntu-0ubuntu2.13 | vulnerable |
| Ubuntu | samba | pro | 2:4.7.6+dfsg~ubuntu-0ubuntu2.14 | vulnerable |
| Ubuntu | samba | pro | 2:4.7.6+dfsg~ubuntu-0ubuntu2.15 | vulnerable |
| Ubuntu | samba | pro | 2:4.7.6+dfsg~ubuntu-0ubuntu2.16 | vulnerable |
| Ubuntu | samba | pro | 2:4.7.6+dfsg~ubuntu-0ubuntu2.17 | vulnerable |
| Ubuntu | samba | pro | 2:4.7.6+dfsg~ubuntu-0ubuntu2.18 | vulnerable |
| Ubuntu | samba | pro | 2:4.7.6+dfsg~ubuntu-0ubuntu2.19 | vulnerable |
| Ubuntu | samba | pro | 2:4.7.6+dfsg~ubuntu-0ubuntu2.20 | vulnerable |
| Ubuntu | samba | pro | 2:4.7.6+dfsg~ubuntu-0ubuntu2.21 | vulnerable |
| Ubuntu | samba | pro | 2:4.7.6+dfsg~ubuntu-0ubuntu2.23 | vulnerable |
| Ubuntu | samba | pro | 2:4.7.6+dfsg~ubuntu-0ubuntu2.24 | vulnerable |
| Ubuntu | samba | pro | 2:4.7.6+dfsg~ubuntu-0ubuntu2.26 | vulnerable |
| Ubuntu | samba | pro | 2:4.7.6+dfsg~ubuntu-0ubuntu2.27 | vulnerable |
| Ubuntu | samba | pro | 2:4.7.6+dfsg~ubuntu-0ubuntu2.28 | vulnerable |
| Ubuntu | samba | pro | 2:4.7.6+dfsg~ubuntu-0ubuntu2.29 | vulnerable |
| Ubuntu | samba | pro | 2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm1 | vulnerable |
| Ubuntu | samba | pro | 2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm2 | vulnerable |
| Ubuntu | samba | pro | 2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm3 | vulnerable |
| Ubuntu | samba | 20.04 | 2:4.10.7+dfsg-0ubuntu2 | vulnerable |
| Ubuntu | samba | 20.04 | 2:4.10.7+dfsg-0ubuntu3 | vulnerable |
| Ubuntu | samba | 20.04 | 2:4.11.1+dfsg-3ubuntu1 | vulnerable |
| Ubuntu | samba | 20.04 | 2:4.11.1+dfsg-3ubuntu2 | vulnerable |
| Ubuntu | samba | 20.04 | 2:4.11.1+dfsg-3ubuntu4 | vulnerable |
| Ubuntu | samba | 20.04 | 2:4.11.5+dfsg-1ubuntu1 | vulnerable |
| Ubuntu | samba | 20.04 | 2:4.11.5+dfsg-1ubuntu2 | vulnerable |
| Ubuntu | samba | 20.04 | 2:4.11.6+dfsg-0ubuntu1 | vulnerable |
| Ubuntu | samba | 20.04 | 2:4.11.6+dfsg-0ubuntu1.1 | vulnerable |
| Ubuntu | samba | 20.04 | 2:4.11.6+dfsg-0ubuntu1.2 | vulnerable |
| Ubuntu | samba | 20.04 | 2:4.11.6+dfsg-0ubuntu1.3 | vulnerable |
| Ubuntu | samba | 20.04 | 2:4.11.6+dfsg-0ubuntu1.4 | vulnerable |
| Ubuntu | samba | 20.04 | 2:4.11.6+dfsg-0ubuntu1.5 | vulnerable |
| Ubuntu | samba | 20.04 | 2:4.11.6+dfsg-0ubuntu1.6 | vulnerable |
| Ubuntu | samba | 20.04 | 2:4.11.6+dfsg-0ubuntu1.8 | vulnerable |
| Ubuntu | samba | 20.04 | 2:4.11.6+dfsg-0ubuntu1.9 | vulnerable |
| Ubuntu | samba | 20.04 | 2:4.11.6+dfsg-0ubuntu1.10 | vulnerable |
| Ubuntu | samba | 20.04 | 2:4.13.14+dfsg-0ubuntu0.20.04.1 | vulnerable |
| Ubuntu | samba | 20.04 | 2:4.13.14+dfsg-0ubuntu0.20.04.2 | vulnerable |
| Ubuntu | samba | 20.04 | 2:4.13.14+dfsg-0ubuntu0.20.04.3 | vulnerable |
| Ubuntu | samba | 20.04 | 2:4.13.14+dfsg-0ubuntu0.20.04.4 | vulnerable |
| Ubuntu | samba | 20.04 | 2:4.13.17~dfsg-0ubuntu0.21.04.1 | vulnerable |
| Ubuntu | samba | 20.04 | 2:4.13.17~dfsg-0ubuntu0.21.04.2 | vulnerable |
| Ubuntu | samba | 20.04 | 2:4.13.17~dfsg-0ubuntu1.20.04.1 | vulnerable |
| Ubuntu | samba | 20.04 | 2:4.13.17~dfsg-0ubuntu1.20.04.2 | vulnerable |
| Ubuntu | samba | 20.04 | 2:4.13.17~dfsg-0ubuntu1.20.04.4 | vulnerable |
| Ubuntu | samba | 20.04 | 2:4.13.17~dfsg-0ubuntu1.20.04.5 | vulnerable |
| Ubuntu | samba | 20.04 | 2:4.15.13+dfsg-0ubuntu0.20.04.1 | vulnerable |
| Ubuntu | samba | 20.04 | 2:4.15.13+dfsg-0ubuntu0.20.04.2 | vulnerable |
| Ubuntu | samba | 20.04 | 2:4.15.13+dfsg-0ubuntu0.20.04.3 | vulnerable |
| Ubuntu | samba | 20.04 | 2:4.15.13+dfsg-0ubuntu0.20.04.4 | vulnerable |
| Ubuntu | samba | 20.04 | 2:4.15.13+dfsg-0ubuntu0.20.04.5 | vulnerable |
| Ubuntu | samba | 20.04 | 2:4.15.13+dfsg-0ubuntu0.20.04.6 | fixed |
| Ubuntu | samba | 22.04 | 2:4.13.5+dfsg-2ubuntu2 | vulnerable |
| Ubuntu | samba | 22.04 | 2:4.13.5+dfsg-2ubuntu3 | vulnerable |
| Ubuntu | samba | 22.04 | 2:4.13.14+dfsg-0ubuntu1 | vulnerable |
| Ubuntu | samba | 22.04 | 2:4.13.14+dfsg-0ubuntu2 | vulnerable |
| Ubuntu | samba | 22.04 | 2:4.15.5~dfsg-0ubuntu1 | vulnerable |
| Ubuntu | samba | 22.04 | 2:4.15.5~dfsg-0ubuntu2 | vulnerable |
| Ubuntu | samba | 22.04 | 2:4.15.5~dfsg-0ubuntu4 | vulnerable |
| Ubuntu | samba | 22.04 | 2:4.15.5~dfsg-0ubuntu5 | vulnerable |
| Ubuntu | samba | 22.04 | 2:4.15.5~dfsg-0ubuntu5.1 | vulnerable |
| Ubuntu | samba | 22.04 | 2:4.15.9+dfsg-0ubuntu0.2 | vulnerable |
| Ubuntu | samba | 22.04 | 2:4.15.9+dfsg-0ubuntu0.3 | vulnerable |
| Ubuntu | samba | 22.04 | 2:4.15.13+dfsg-0ubuntu1 | vulnerable |
| Ubuntu | samba | 22.04 | 2:4.15.13+dfsg-0ubuntu1.1 | vulnerable |
| Ubuntu | samba | 22.04 | 2:4.15.13+dfsg-0ubuntu1.2 | vulnerable |
| Ubuntu | samba | 22.04 | 2:4.15.13+dfsg-0ubuntu1.3 | vulnerable |
| Ubuntu | samba | 22.04 | 2:4.15.13+dfsg-0ubuntu1.4 | vulnerable |
| Ubuntu | samba | 22.04 | 2:4.15.13+dfsg-0ubuntu1.5 | fixed |
| Ubuntu | samba | 24.04 | 2:4.18.6+dfsg-1ubuntu2 | vulnerable |
| Ubuntu | samba | 24.04 | 2:4.18.6+dfsg-1ubuntu2.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | samba | source | sid | 2:4.19.1+dfsg-1 | not yet assigned | Not reported | Not reported |
| Debian | samba | source | forky | 2:4.19.1+dfsg-1 | not yet assigned | Not reported | Not reported |
| Debian | samba | source | trixie | 2:4.19.1+dfsg-1 | not yet assigned | Not reported | Not reported |
| Debian | samba | source | bookworm | 2:4.17.12+dfsg-0+deb12u1 | not yet assigned | Not reported | Not reported |
| Alpine | samba | apk | 3.18 | 4.18.8-r0 | Not reported | ALPINE-CVE-2023-42669 | Not reported |
| Alpine | samba | apk | 3.19 | 4.18.8-r0 | Not reported | ALPINE-CVE-2023-42669 | Not reported |
| Alpine | samba | apk | 3.20 | 4.18.8-r0 | Not reported | ALPINE-CVE-2023-42669 | Not reported |
| Alpine | samba | apk | 3.21 | 4.18.8-r0 | Not reported | ALPINE-CVE-2023-42669 | Not reported |
| Alpine | samba | apk | 3.22 | 4.18.8-r0 | Not reported | ALPINE-CVE-2023-42669 | Not reported |
| Alpine | samba | apk | 3.23 | 4.18.8-r0 | Not reported | ALPINE-CVE-2023-42669 | Not reported |
| Alpine | samba | apk | 3.24 | 4.18.8-r0 | Not reported | ALPINE-CVE-2023-42669 | Not reported |
| Ubuntu | samba | deb | 20.04 | 2:4.15.13+dfsg-0ubuntu0.20.04.6 | Not reported | UBUNTU-CVE-2023-42669 | Not reported |
| Ubuntu | samba | deb | 22.04 | 2:4.15.13+dfsg-0ubuntu1.5 | Not reported | UBUNTU-CVE-2023-42669 | Not reported |
| Ubuntu | samba | deb | 24.04 | 2:4.18.6+dfsg-1ubuntu2.1 | Not reported | UBUNTU-CVE-2023-42669 | Not reported |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
References
- [https://ftp.suse.com/pub/projects/security/csaf/rhsa-2023_7467.json]
- [https://osv.dev/vulnerability/ALPINE-CVE-2023-42669]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2023-42669]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2023-42669]
- [https://security-tracker.debian.org/tracker/CVE-2023-42669]
- [https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-42669.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2023/wid-sec-w-2023-2620.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]