wall in util-linux through 2.40, often installed with setgid tty permissions, allows escape sequences to be sent to other users' terminals through argv. (Specifically, escape sequences received from stdin are blocked, but escape sequences received from argv are not blocked.) There may be plausible scenarios where this leads to account takeover.
wall en util-linux hasta 2.40, a menudo instalado con permisos setgid tty, permite enviar secuencias de escape a terminales de otros usuarios a través de argv. (Específicamente, las secuencias de escape recibidas de stdin están bloqueadas, pero las secuencias de escape recibidas de argv no están bloqueadas). Puede haber escenarios plausibles en los que esto conduzca a la apropiación de cuentas.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
| Attack Vector | LOCAL |
|---|---|
| Attack Complexity | LOW |
| Privileges Required | LOW |
| User Interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality Impact | NONE |
| Integrity Impact | LOW |
| Availability Impact | NONE |
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Type: Secondary
Exploitability Score: 1.8
Impact Score: 1.4
| Source | Type | Description |
|---|---|---|
| 134c704f-9b21-4f2e-91b3-4a467353bcc0 | Secondary |
en
CWE-150
|
| Vendor | Product | Version | Update | Type |
|---|---|---|---|---|
| kernel | util-linux | * | <built-in method update of dict object at 0x702bdcc59280> | Application |
| debian | debian_linux | 10.0 | <built-in method update of dict object at 0x702bdd892400> | Operating System |
| Vulnerable | CPE |
|---|---|
| Yes | cpe:2.3:a:kernel:util-linux:*:*:*:*:*:*:*:* |
| Vulnerable | CPE |
|---|---|
| Yes | cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* |