CVE-2021-23192 Information

Description

A flaw was found in the way samba implemented DCE/RPC. If a client to a Samba server sent a very large DCE/RPC request and chose to fragment it an attacker could replace later fragments with their own data bypassing the signature requirements.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Reference

https://ubuntu.com/security/CVE-2021-23192 https://bugzilla.redhat.com/show_bug.cgi?id=2019666 https://www.samba.org/samba/security/CVE-2021-23192.html

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

HIGH

Base Score

NONE

Base Severity

7.5