CVE-2015-6565

Severity: high (CVSS 7.2 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.7% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2015-08-24 · updated 2026-06-17
Weakness: CWE-264

Description

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.

Affected products

OpenSSH: 6.8, 6.9

References

http://openwall.com/lists/oss-security/2017/01/26/2
http://www.openssh.com/txt/release-7.0
http://www.openwall.com/lists/oss-security/2015/08/22/1
http://www.securityfocus.com/bid/76497
http://www.securitytracker.com/id/1033917
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05131085
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05150888
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05158380
https://security.gentoo.org/glsa/201512-04
https://www.exploit-db.com/exploits/41173/
http://openwall.com/lists/oss-security/2017/01/26/2

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