CVE-2021-23192
Published: 9 November 2021
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.
Notes
| Author | Note |
|---|---|
| mdeslaur | affects 4.10.0 and later |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
samba Launchpad, Ubuntu, Debian |
upstream |
Released
(4.13.14)
|
| bionic |
Not vulnerable
(2:4.7.6+dfsg~ubuntu-0ubuntu2.24)
|
|
| focal |
Released
(2:4.13.14+dfsg-0ubuntu0.20.04.1)
|
|
| hirsute |
Released
(2:4.13.14+dfsg-0ubuntu0.21.04.1)
|
|
| impish |
Released
(2:4.13.14+dfsg-0ubuntu0.21.10.1)
|
|
| jammy |
Released
(2:4.13.14+dfsg-0ubuntu1)
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.5 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | High |
| Availability impact | None |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |