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    CVE-2017-15906

    The 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.

    Published:Oct 3, 2017
    Last Modified:May 28, 2026
    EPS:Oct 26, 2017
    EPSS Score:0.02659
    CVSS Score:5.3

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Netapp
    Product
    Active Iq Unified Manager
    Vendor
    Netapp
    Product
    Cloud Backup
    Vendor
    Netapp
    Product
    Clustered Data Ontap
    Vendor
    Netapp
    Product
    Cn1610
    Vendor
    Netapp
    Product
    Cn1610 Firmware
    Vendor
    Netapp
    Product
    Data Ontap Edge
    Vendor
    Netapp
    Product
    Hci Management Node
    Vendor
    Netapp
    Product
    Oncommand Unified Manager Core Package
    Vendor
    Netapp
    Product
    Solidfire
    Vendor
    Netapp
    Product
    Steelstore Cloud Integrated Storage
    Vendor
    Netapp
    Product
    Storage Replication Adapter For Clustered Data Ontap
    Vendor
    Netapp
    Product
    Vasa Provider For Clustered Data Ontap
    Vendor
    Netapp
    Product
    Virtual Storage Console
    Vendor
    Openbsd
    Product
    Openssh
    Vendor
    Oracle
    Product
    Sun Zfs Storage Appliance Kit
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Enterprise Linux Desktop
    Vendor
    Redhat
    Product
    Enterprise Linux Eus
    Vendor
    Redhat
    Product
    Enterprise Linux Server
    Vendor
    Redhat
    Product
    Enterprise Linux Server Aus
    Vendor
    Redhat
    Product
    Enterprise Linux Server Tus
    Vendor
    Redhat
    Product
    Enterprise Linux Workstation

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-1 Accessing Functionality Not Properly Constrained by ACLs
    CAPEC-10 Buffer Overflow via Environment Variables
    CAPEC-101 Server Side Include (SSI) Injection
    CAPEC-104 Cross Zone Scripting
    CAPEC-108 Command Line Execution through SQL Injection
    CAPEC-109 Object Relational Mapping Injection
    CAPEC-110 SQL Injection through SOAP Parameter Tampering
    CAPEC-120 Double Encoding
    CAPEC-122 Privilege Abuse
    CAPEC-127 Directory Indexing
    CAPEC-13 Subverting Environment Variable Values
    CAPEC-135 Format String Injection
    CAPEC-136 LDAP Injection
    CAPEC-14 Client-side Injection-induced Buffer Overflow
    CAPEC-153 Input Data Manipulation
    CAPEC-17 Using Malicious Files
    CAPEC-180 Exploiting Incorrectly Configured Access Control Security Levels
    CAPEC-182 Flash Injection
    CAPEC-206 Signing Malicious Code
    CAPEC-209 XSS Using MIME Type Mismatch
    CAPEC-22 Exploiting Trust in Client
    CAPEC-23 File Content Injection
    CAPEC-230 Serialized Data with Nested Payloads
    CAPEC-231 Oversized Serialized Data Payloads
    CAPEC-234 Hijacking a privileged process
    CAPEC-24 Filter Failure through Buffer Overflow
    CAPEC-250 XML Injection
    CAPEC-261 Fuzzing for garnering other adjacent user/sensitive data
    CAPEC-267 Leverage Alternate Encoding
    CAPEC-28 Fuzzing
    CAPEC-3 Using Leading 'Ghost' Character Sequences to Bypass Input Filters
    CAPEC-31 Accessing/Intercepting/Modifying HTTP Cookies
    CAPEC-42 MIME Conversion
    CAPEC-43 Exploiting Multiple Input Interpretation Layers
    CAPEC-45 Buffer Overflow via Symbolic Links
    CAPEC-46 Overflow Variables and Tags
    CAPEC-47 Buffer Overflow via Parameter Expansion
    CAPEC-473 Signature Spoof
    CAPEC-52 Embedding NULL Bytes
    CAPEC-53 Postfix, Null Terminate, and Backslash
    CAPEC-588 DOM-Based XSS
    CAPEC-60 Reusing Session IDs (aka Session Replay)
    CAPEC-61 Session Fixation
    CAPEC-62 Cross Site Request Forgery
    CAPEC-63 Cross-Site Scripting (XSS)
    CAPEC-64 Using Slashes and URL Encoding Combined to Bypass Validation Logic
    CAPEC-642 Replace Binaries
    CAPEC-664 Server Side Request Forgery
    CAPEC-67 String Format Overflow in syslog()
    CAPEC-7 Blind SQL Injection
    CAPEC-71 Using Unicode Encoding to Bypass Validation Logic
    CAPEC-72 URL Encoding
    CAPEC-73 User-Controlled Filename
    CAPEC-78 Using Escaped Slashes in Alternate Encoding
    CAPEC-79 Using Slashes in Alternate Encoding
    CAPEC-8 Buffer Overflow in an API Call
    CAPEC-80 Using UTF-8 Encoding to Bypass Validation Logic
    CAPEC-81 Web Server Logs Tampering
    CAPEC-83 XPath Injection
    CAPEC-85 AJAX Footprinting
    CAPEC-88 OS Command Injection
    CAPEC-9 Buffer Overflow in Local Command-Line Utilities

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    References

    http://www.securityfocus.com/bid/101552
    https://access.redhat.com/errata/RHSA-2018:0980
    https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
    https://github.com/openbsd/src/commit/a6981567e8e215acc1ef690c8dbb30f2d9b00a19
    https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html
    https://security.gentoo.org/glsa/201801-05
    https://security.netapp.com/advisory/ntap-20180423-0004/
    https://www.openssh.com/txt/release-7.6
    https://www.oracle.com/security-alerts/cpujan2020.html
    http://www.securityfocus.com/bid/101552
    https://access.redhat.com/errata/RHSA-2018:0980
    https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
    https://github.com/openbsd/src/commit/a6981567e8e215acc1ef690c8dbb30f2d9b00a19
    https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html
    https://security.gentoo.org/glsa/201801-05
    https://security.netapp.com/advisory/ntap-20180423-0004/
    https://www.openssh.com/txt/release-7.6
    https://www.oracle.com/security-alerts/cpujan2020.html

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High