openssh: Incorrectly set TTYs to be world-writable
Published Aug 24, 2015
7.2
HIGHCVSS 2.0
EPSS 2.67%
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
No data.
No data.
Red Hat Enterprise Linux 4
openssh
Not affected
Red Hat Enterprise Linux 5
openssh
Not affected
Red Hat Enterprise Linux 6
openssh
Not affected
Red Hat Enterprise Linux 7
openssh
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 4 | openssh | Not affected | n/a |
| Red Hat Enterprise Linux 5 | openssh | Not affected | n/a |
| Red Hat Enterprise Linux 6 | openssh | Not affected | n/a |
| Red Hat Enterprise Linux 7 | openssh | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue did not affect the versions of openssh as shipped with Red Hat Enterprise Linux 5, 6, and 7.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:L/AC:L/Au:N/C:C/I:C/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.67% (0.02667) | 85.21th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.60% (0.02605) | 83.31th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.38% (0.00376) | 57.13th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.06% (0.00062) | 28.45th | v3 (v2023.03.01) |
| Jun 12, 2024 | 0.06% (0.00062) | 26.42th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.06% (0.00062) | 24.41th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.53% (0.03534) | 84.88th | v2 (v2022.01.01) |
| Apr 1, 2022 | 3.53% (0.03534) | 83.33th | v2 (v2022.01.01) |
| Feb 4, 2022 | 3.53% (0.03534) | 66.49th | v2 (v2022.01.01) |
References (15)
- http://openwall.com/lists/oss-security/2017/01/26/2 mailing-list
- http://www.openssh.com/txt/release-7.0 Vendor Advisory
- http://www.openwall.com/lists/oss-security/2015/08/22/1 mailing-list
- http://www.securityfocus.com/bid/76497 vdb-entry
- http://www.securitytracker.com/id/1033917 vdb-entry
- https://access.redhat.com/security/cve/CVE-2015-6565 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1252861 Issue Tracking
- 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://nvd.nist.gov/vuln/detail/CVE-2015-6565
- https://security.gentoo.org/glsa/201512-04 vendor-advisory
- https://www.cve.org/CVERecord?id=CVE-2015-6565
- https://www.exploit-db.com/exploits/41173/ exploit
Change history (0)
No recorded changes yet.