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Tool Directory

CVE-2015-6565

HighPublished

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...

Published: Aug 24, 2015
Updated: Aug 6, 2024
Assigning CNA: mitre
Evidence observed: Jan 26, 2017

Primary CVSS

7.2/ 10High

nvd · CVSS 2.0

AV:L/AC:L/Au:N/C:C/I:C/A:C

EPSS probability estimate

2.7%

Low · next 30 days

Percentile: 85.0%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

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.

Sources

OpenSSH 6.8 < 6.9 - 'PTY' Local Privilege EscalationExploit
Federico Bento · linux · Jan 26, 2017

Responsible use

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