// For flags

CVE-2015-6565

OpenSSH 6.8 < 6.9 - 'PTY' Local Privilege Escalation

Severity Score

7.8
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

2
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

sshd in OpenSSH 6.8 and 6.9 uses world-writable permissions for TTY devices, which allows local users to cause a denial of service (terminal disruption) or possibly have unspecified other impact by writing to a device, as demonstrated by writing an escape sequence.

El fichero sshd en OpenSSH 6.8 and 6.9 fija permisos de lectura para cualquier usuario en dispositivos TTY, lo que posibilita a usuarios locales provocar denegación de servicio (desorganización de terminales) o tener un impacto inesperado al escribir sobre un dispositivo, como se demuestra escribiendo una secuencia de escape

Multiple potential security vulnerabilities have been identified with the Matrix Operating Environment on Windows and Linux that could be exploited remotely resulting in Denial of Service (DoS), Unauthorized Access, Execution of arbitrary code, Cross-site scripting (XSS), Disclosure of Sensitive Information, Code Execution, and locally resulting in Cross-site Request Forgery (CSRF). Revision 1 of this advisory.

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Local
Attack Complexity
Low
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2015-08-21 CVE Reserved
  • 2015-08-24 CVE Published
  • 2017-01-27 First Exploit
  • 2024-08-06 CVE Updated
  • 2025-07-30 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-264: Permissions, Privileges, and Access Controls
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Openbsd
Search vendor "Openbsd"
 Openssh
Search vendor "Openbsd" for product "Openssh"
 6.8
Search vendor "Openbsd" for product "Openssh" and version "6.8"
-
Affected
Openbsd
Search vendor "Openbsd"
 Openssh
Search vendor "Openbsd" for product "Openssh"
 6.9
Search vendor "Openbsd" for product "Openssh" and version "6.9"
-
Affected