CVE-2023-42669

CVE.org · Published

Record status: Published
Identifier year (not publication year): 2023
Source publication: Nov 6, 2023
Source updated: Nov 20, 2025
Imported by cveboard: Oct 24, 2026
Source snapshot: cve_2026-10-24_midnight_baseline · Oct 24, 2026

CNA source text (English)

Samba: "rpcecho" development server allows denial of service via sleep() call on ad dc

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.

Scoped product and version facts

Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.

Exploitation unknown; this catalogue does not assess exploitation.

samba

Vendor: Unknown
Product: Unknown
Platforms: Unknown
Default status: unaffected
Package: samba
Package collection: https://github.com/samba-team/samba

samba · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
4.0.0	`affected`	semver	4.17.12	Unavailable	None listed
4.18.0	`affected`	semver	4.18.8	Unavailable	None listed
4.19.0	`affected`	Unavailable	Unavailable	Unavailable	None listed

Red Hat Enterprise Linux 8

Vendor: Red Hat
Product: Red Hat Enterprise Linux 8
Platforms: Unknown
Default status: affected
Package: samba
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 8 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:4.18.6-2.el8_9	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 8

Vendor: Red Hat
Product: Red Hat Enterprise Linux 8
Platforms: Unknown
Default status: affected
Package: samba
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 8 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:4.18.6-2.el8_9	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 8.6 Extended Update Support

Vendor: Red Hat
Product: Red Hat Enterprise Linux 8.6 Extended Update Support
Platforms: Unknown
Default status: affected
Package: samba
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 8.6 Extended Update Support · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:4.15.5-13.el8_6	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 8.8 Extended Update Support

Vendor: Red Hat
Product: Red Hat Enterprise Linux 8.8 Extended Update Support
Platforms: Unknown
Default status: affected
Package: samba
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 8.8 Extended Update Support · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:4.17.5-4.el8_8	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 9

Vendor: Red Hat
Product: Red Hat Enterprise Linux 9
Platforms: Unknown
Default status: affected
Package: samba
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 9 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:4.18.6-101.el9_3	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 9

Vendor: Red Hat
Product: Red Hat Enterprise Linux 9
Platforms: Unknown
Default status: affected
Package: samba
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 9 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:4.18.6-101.el9_3	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 9.0 Extended Update Support

Vendor: Red Hat
Product: Red Hat Enterprise Linux 9.0 Extended Update Support
Platforms: Unknown
Default status: affected
Package: samba
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 9.0 Extended Update Support · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:4.15.5-111.el9_0	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 9.2 Extended Update Support

Vendor: Red Hat
Product: Red Hat Enterprise Linux 9.2 Extended Update Support
Platforms: Unknown
Default status: affected
Package: samba
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 9.2 Extended Update Support · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:4.17.5-104.el9_2	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Virtualization 4 for Red Hat Enterprise Linux 8

Vendor: Red Hat
Product: Red Hat Virtualization 4 for Red Hat Enterprise Linux 8
Platforms: Unknown
Default status: affected
Package: samba
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Virtualization 4 for Red Hat Enterprise Linux 8 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:4.15.5-13.el8_6	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 6

Vendor: Red Hat
Product: Red Hat Enterprise Linux 6
Platforms: Unknown
Default status: unknown
Package: samba
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Red Hat Enterprise Linux 6

Vendor: Red Hat
Product: Red Hat Enterprise Linux 6
Platforms: Unknown
Default status: unknown
Package: samba4
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Red Hat Enterprise Linux 7

Vendor: Red Hat
Product: Red Hat Enterprise Linux 7
Platforms: Unknown
Default status: unknown
Package: samba
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Red Hat Storage 3

Vendor: Red Hat
Product: Red Hat Storage 3
Platforms: Unknown
Default status: unknown
Package: samba
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.