CVE-2017-15906

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Summary

CVECVE-2017-15906
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2017-10-26 03:29:00 UTC
Updated2026-05-28 19:16:25 UTC
DescriptionThe process_open function in sftp-server.c in OpenSSH before 7.6 does not properly prevent write operations in readonly mode, which allows attackers to create zero-length files.

Risk And Classification

Primary CVSS: v3.1 5.3 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

EPSS: 0.026590000 probability, percentile 0.860420000 (date 2026-06-01)

Problem Types: CWE-732 | n/a | CWE-732 CWE-732 Incorrect Permission Assignment for Critical Resource

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
3.1ADPDECLARED5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
2.0[email protected]Primary5AV:N/AC:L/Au:N/C:N/I:P/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Low
Authentication
None
Confidentiality
None
Integrity
Partial
Availability
None

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Debian Debian Linux 8.0 All All All
Application Netapp Active Iq Unified Manager - All All All
Application Netapp Cloud Backup - All All All
Application Netapp Clustered Data Ontap - All All All
Hardware Netapp Cn1610 - All All All
Operating System Netapp Cn1610 Firmware - All All All
Application Netapp Data Ontap Edge - All All All
Application Netapp Hci Management Node - All All All
Application Netapp Oncommand Unified Manager Core Package - All All All
Application Netapp Solidfire - All All All
Application Netapp Steelstore Cloud Integrated Storage - All All All
Application Netapp Storage Replication Adapter For Clustered Data Ontap All All All All
Application Netapp Storage Replication Adapter For Clustered Data Ontap 9.6 All All All
Application Netapp Vasa Provider For Clustered Data Ontap All All All All
Application Netapp Vasa Provider For Clustered Data Ontap All All All All
Application Netapp Virtual Storage Console All All All All
Application Netapp Virtual Storage Console 9.6 All All All
Application Openbsd Openssh All All All All
Application Oracle Sun Zfs Storage Appliance Kit 8.8.6 All All All
Operating System Redhat Enterprise Linux Desktop 7.0 All All All
Operating System Redhat Enterprise Linux Eus 7.6 All All All
Operating System Redhat Enterprise Linux Eus 7.7 All All All
Operating System Redhat Enterprise Linux Server 7.0 All All All
Operating System Redhat Enterprise Linux Server Aus 7.6 All All All
Operating System Redhat Enterprise Linux Server Aus 7.7 All All All
Operating System Redhat Enterprise Linux Server Tus 7.6 All All All
Operating System Redhat Enterprise Linux Server Tus 7.7 All All All
Operating System Redhat Enterprise Linux Workstation 7.0 All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory
disallow creation (of empty files) in read-only mode; reported by · openbsd/src@a698156 · GitHub af854a3a-2127-422b-91ae-364da2661108 github.com Third Party Advisory
[SECURITY] [DLA 1500-1] openssh security update af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mailing List, Third Party Advisory
www.openssh.com/txt/release-7.6 af854a3a-2127-422b-91ae-364da2661108 www.openssh.com Release Notes, Vendor Advisory
OpenSSH 'sftp-server.c' Remote Security Bypass Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com Third Party Advisory, VDB Entry
OpenSSH: Permission issue (GLSA 201801-05) — Gentoo Security af854a3a-2127-422b-91ae-364da2661108 security.gentoo.org Third Party Advisory
cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf af854a3a-2127-422b-91ae-364da2661108 cert-portal.siemens.com
CVE-2017-15906 OpenSSH Vulnerability in NetApp Products | NetApp Product Security af854a3a-2127-422b-91ae-364da2661108 security.netapp.com Third Party Advisory
Oracle Critical Patch Update Advisory - January 2020 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 296091 Oracle Solaris 11.4 Support Repository Update (SRU) 6.1.4 Missing (CPUJAN2019)
  • 38905 OpenSSH Improper Authorization Vulnerability (CVE-2017-15906)
  • 500485 Alpine Linux Security Update for openssh
  • 504244 Alpine Linux Security Update for openssh
  • 591280 Siemens SCALANCE X-200RNA Switch Devices Denial of Service (DoS) Multiple Vulnerabilities (ICSA-22-349-21, SSA-412672)
  • 591311 Bosch Rexroth PRA-ES8P2S Ethernet-Switch Multiple Vulnerabilities (BOSCH-SA-247053-BT)
  • 710274 Gentoo Linux OpenSSH Permission issue Vulnerability (GLSA 201801-05)
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