CVE-2017-15906

openssh: Improper write operations in readonly mode allow for zero-length file creation

Severity Score

5.3

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

La funciÃ³n process_open en sftp-server.c en OpenSSH, en versiones anteriores a la 7.6, no evita correctamente las operaciones de escritura en el modo readonly, lo que permite que los atacantes creen archivos de longitud cero.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2017-10-25 CVE Reserved
2017-10-26 CVE Published
2024-01-29 EPSS Updated
2024-08-05 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation
CWE-732: Incorrect Permission Assignment for Critical Resource

CAPEC

References (11)

URL	Tag	Source
http://www.securityfocus.com/bid/101552	Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
https://github.com/openbsd/src/commit/a6981567e8e215acc1ef690c8dbb30f2d9b00a19	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html	Mailing List
https://security.netapp.com/advisory/ntap-20180423-0004	Third Party Advisory
https://www.oracle.com/security-alerts/cpujan2020.html	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://access.redhat.com/errata/RHSA-2018:0980	2022-12-13
https://security.gentoo.org/glsa/201801-05	2022-12-13
https://www.openssh.com/txt/release-7.6	2022-12-13
https://access.redhat.com/security/cve/CVE-2017-15906	2018-04-10
https://bugzilla.redhat.com/show_bug.cgi?id=1506630	2018-04-10

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Netapp Search vendor "Netapp"	Cn1610 Firmware Search vendor "Netapp" for product "Cn1610 Firmware"	-	-	Affected	in	Netapp Search vendor "Netapp"	Cn1610 Search vendor "Netapp" for product "Cn1610"	-	-	Safe
Openbsd Search vendor "Openbsd"		Openssh Search vendor "Openbsd" for product "Openssh"				< 7.6 Search vendor "Openbsd" for product "Openssh" and version " < 7.6"		-		Affected
Oracle Search vendor "Oracle"		Sun Zfs Storage Appliance Kit Search vendor "Oracle" for product "Sun Zfs Storage Appliance Kit"				8.8.6 Search vendor "Oracle" for product "Sun Zfs Storage Appliance Kit" and version "8.8.6"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				8.0 Search vendor "Debian" for product "Debian Linux" and version "8.0"		-		Affected
Netapp Search vendor "Netapp"		Active Iq Unified Manager Search vendor "Netapp" for product "Active Iq Unified Manager"				-		vmware_vsphere		Affected
Netapp Search vendor "Netapp"		Cloud Backup Search vendor "Netapp" for product "Cloud Backup"				-		-		Affected
Netapp Search vendor "Netapp"		Clustered Data Ontap Search vendor "Netapp" for product "Clustered Data Ontap"				-		-		Affected
Netapp Search vendor "Netapp"		Data Ontap Edge Search vendor "Netapp" for product "Data Ontap Edge"				-		-		Affected
Netapp Search vendor "Netapp"		Hci Management Node Search vendor "Netapp" for product "Hci Management Node"				-		-		Affected
Netapp Search vendor "Netapp"		Oncommand Unified Manager Core Package Search vendor "Netapp" for product "Oncommand Unified Manager Core Package"				-		-		Affected
Netapp Search vendor "Netapp"		Solidfire Search vendor "Netapp" for product "Solidfire"				-		-		Affected
Netapp Search vendor "Netapp"		Steelstore Cloud Integrated Storage Search vendor "Netapp" for product "Steelstore Cloud Integrated Storage"				-		-		Affected
Netapp Search vendor "Netapp"		Storage Replication Adapter For Clustered Data Ontap Search vendor "Netapp" for product "Storage Replication Adapter For Clustered Data Ontap"				>= 9.7 Search vendor "Netapp" for product "Storage Replication Adapter For Clustered Data Ontap" and version " >= 9.7"		vmware_vsphere		Affected
Netapp Search vendor "Netapp"		Storage Replication Adapter For Clustered Data Ontap Search vendor "Netapp" for product "Storage Replication Adapter For Clustered Data Ontap"				9.6 Search vendor "Netapp" for product "Storage Replication Adapter For Clustered Data Ontap" and version "9.6"		vmware_vsphere		Affected
Netapp Search vendor "Netapp"		Vasa Provider For Clustered Data Ontap Search vendor "Netapp" for product "Vasa Provider For Clustered Data Ontap"				>= 6.0 <= 6.2 Search vendor "Netapp" for product "Vasa Provider For Clustered Data Ontap" and version " >= 6.0 <= 6.2"		-		Affected
Netapp Search vendor "Netapp"		Vasa Provider For Clustered Data Ontap Search vendor "Netapp" for product "Vasa Provider For Clustered Data Ontap"				>= 9.7 Search vendor "Netapp" for product "Vasa Provider For Clustered Data Ontap" and version " >= 9.7"		-		Affected
Netapp Search vendor "Netapp"		Virtual Storage Console Search vendor "Netapp" for product "Virtual Storage Console"				>= 9.7 Search vendor "Netapp" for product "Virtual Storage Console" and version " >= 9.7"		vmware_vsphere		Affected
Netapp Search vendor "Netapp"		Virtual Storage Console Search vendor "Netapp" for product "Virtual Storage Console"				9.6 Search vendor "Netapp" for product "Virtual Storage Console" and version "9.6"		vmware_vsphere		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Desktop Search vendor "Redhat" for product "Enterprise Linux Desktop"				7.0 Search vendor "Redhat" for product "Enterprise Linux Desktop" and version "7.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Eus Search vendor "Redhat" for product "Enterprise Linux Eus"				7.6 Search vendor "Redhat" for product "Enterprise Linux Eus" and version "7.6"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Eus Search vendor "Redhat" for product "Enterprise Linux Eus"				7.7 Search vendor "Redhat" for product "Enterprise Linux Eus" and version "7.7"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Search vendor "Redhat" for product "Enterprise Linux Server"				7.0 Search vendor "Redhat" for product "Enterprise Linux Server" and version "7.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Aus Search vendor "Redhat" for product "Enterprise Linux Server Aus"				7.6 Search vendor "Redhat" for product "Enterprise Linux Server Aus" and version "7.6"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Aus Search vendor "Redhat" for product "Enterprise Linux Server Aus"				7.7 Search vendor "Redhat" for product "Enterprise Linux Server Aus" and version "7.7"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Tus Search vendor "Redhat" for product "Enterprise Linux Server Tus"				7.6 Search vendor "Redhat" for product "Enterprise Linux Server Tus" and version "7.6"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Tus Search vendor "Redhat" for product "Enterprise Linux Server Tus"				7.7 Search vendor "Redhat" for product "Enterprise Linux Server Tus" and version "7.7"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Workstation Search vendor "Redhat" for product "Enterprise Linux Workstation"				7.0 Search vendor "Redhat" for product "Enterprise Linux Workstation" and version "7.0"		-		Affected