CVE-2018-20685

openssh: scp client improper directory name validation

Severity Score

5.3

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

In OpenSSH 7.9, scp.c in the scp client allows remote SSH servers to bypass intended access restrictions via the filename of . or an empty filename. The impact is modifying the permissions of the target directory on the client side.

En OpenSSH 7.9, scp.c en el cliente scp permite que los servidores SSH omitan las restricciones de acceso planeadas mediante un nombre de archivo "." o un nombre de archivo vacío. El impacto consiste en modificar los permisos del directorio objetivo en el lado del cliente.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

High

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2019-01-10 CVE Reserved
2019-01-10 CVE Published
2024-08-05 CVE Updated
2024-08-05 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation
CWE-863: Incorrect Authorization

CAPEC

References (16)

URL	Tag	Source
http://www.securityfocus.com/bid/106531	Broken Link
https://lists.debian.org/debian-lts-announce/2019/03/msg00030.html	Mailing List
https://security.netapp.com/advisory/ntap-20190215-0001	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf	2023-02-23
https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/scp.c.diff?r1=1.197&r2=1.198&f=h	2023-02-23
https://github.com/openssh/openssh-portable/commit/6010c0303a422a9c5fa8860c061bf7105eb7f8b2	2023-02-23
https://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txt	2023-02-23
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html	2023-02-23
https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html	2023-02-23

URL	Date	SRC
https://access.redhat.com/errata/RHSA-2019:3702	2023-02-23
https://security.gentoo.org/glsa/201903-16	2023-02-23
https://security.gentoo.org/glsa/202007-53	2023-02-23
https://usn.ubuntu.com/3885-1	2023-02-23
https://www.debian.org/security/2019/dsa-4387	2023-02-23
https://access.redhat.com/security/cve/CVE-2018-20685	2019-11-05
https://bugzilla.redhat.com/show_bug.cgi?id=1665785	2019-11-05

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Fujitsu Search vendor "Fujitsu"	M10-1 Firmware Search vendor "Fujitsu" for product "M10-1 Firmware"	< xcp2361 Search vendor "Fujitsu" for product "M10-1 Firmware" and version " < xcp2361"	-	Affected	in	Fujitsu Search vendor "Fujitsu"	M10-1 Search vendor "Fujitsu" for product "M10-1"	-	-	Safe
Fujitsu Search vendor "Fujitsu"	M10-4 Firmware Search vendor "Fujitsu" for product "M10-4 Firmware"	< xcp2361 Search vendor "Fujitsu" for product "M10-4 Firmware" and version " < xcp2361"	-	Affected	in	Fujitsu Search vendor "Fujitsu"	M10-4 Search vendor "Fujitsu" for product "M10-4"	-	-	Safe
Fujitsu Search vendor "Fujitsu"	M10-4s Firmware Search vendor "Fujitsu" for product "M10-4s Firmware"	< xcp2361 Search vendor "Fujitsu" for product "M10-4s Firmware" and version " < xcp2361"	-	Affected	in	Fujitsu Search vendor "Fujitsu"	M10-4s Search vendor "Fujitsu" for product "M10-4s"	-	-	Safe
Fujitsu Search vendor "Fujitsu"	M12-1 Firmware Search vendor "Fujitsu" for product "M12-1 Firmware"	< xcp2361 Search vendor "Fujitsu" for product "M12-1 Firmware" and version " < xcp2361"	-	Affected	in	Fujitsu Search vendor "Fujitsu"	M12-1 Search vendor "Fujitsu" for product "M12-1"	-	-	Safe
Fujitsu Search vendor "Fujitsu"	M12-2 Firmware Search vendor "Fujitsu" for product "M12-2 Firmware"	< xcp2361 Search vendor "Fujitsu" for product "M12-2 Firmware" and version " < xcp2361"	-	Affected	in	Fujitsu Search vendor "Fujitsu"	M12-2 Search vendor "Fujitsu" for product "M12-2"	-	-	Safe
Fujitsu Search vendor "Fujitsu"	M12-2s Firmware Search vendor "Fujitsu" for product "M12-2s Firmware"	< xcp2361 Search vendor "Fujitsu" for product "M12-2s Firmware" and version " < xcp2361"	-	Affected	in	Fujitsu Search vendor "Fujitsu"	M12-2s Search vendor "Fujitsu" for product "M12-2s"	-	-	Safe
Fujitsu Search vendor "Fujitsu"	M10-1 Firmware Search vendor "Fujitsu" for product "M10-1 Firmware"	< xcp3070 Search vendor "Fujitsu" for product "M10-1 Firmware" and version " < xcp3070"	-	Affected	in	Fujitsu Search vendor "Fujitsu"	M10-1 Search vendor "Fujitsu" for product "M10-1"	-	-	Safe
Fujitsu Search vendor "Fujitsu"	M10-4 Firmware Search vendor "Fujitsu" for product "M10-4 Firmware"	< xcp3070 Search vendor "Fujitsu" for product "M10-4 Firmware" and version " < xcp3070"	-	Affected	in	Fujitsu Search vendor "Fujitsu"	M10-4 Search vendor "Fujitsu" for product "M10-4"	-	-	Safe
Fujitsu Search vendor "Fujitsu"	M10-4s Firmware Search vendor "Fujitsu" for product "M10-4s Firmware"	< xcp3070 Search vendor "Fujitsu" for product "M10-4s Firmware" and version " < xcp3070"	-	Affected	in	Fujitsu Search vendor "Fujitsu"	M10-4s Search vendor "Fujitsu" for product "M10-4s"	-	-	Safe
Fujitsu Search vendor "Fujitsu"	M10-4s Firmware Search vendor "Fujitsu" for product "M10-4s Firmware"	< xcp3070 Search vendor "Fujitsu" for product "M10-4s Firmware" and version " < xcp3070"	-	Affected	in	Fujitsu Search vendor "Fujitsu"	M10-4s Search vendor "Fujitsu" for product "M10-4s"	-	-	Safe
Fujitsu Search vendor "Fujitsu"	M12-1 Firmware Search vendor "Fujitsu" for product "M12-1 Firmware"	< xcp3070 Search vendor "Fujitsu" for product "M12-1 Firmware" and version " < xcp3070"	-	Affected	in	Fujitsu Search vendor "Fujitsu"	M12-1 Search vendor "Fujitsu" for product "M12-1"	-	-	Safe
Fujitsu Search vendor "Fujitsu"	M12-2 Firmware Search vendor "Fujitsu" for product "M12-2 Firmware"	< xcp3070 Search vendor "Fujitsu" for product "M12-2 Firmware" and version " < xcp3070"	-	Affected	in	Fujitsu Search vendor "Fujitsu"	M12-2 Search vendor "Fujitsu" for product "M12-2"	-	-	Safe
Fujitsu Search vendor "Fujitsu"	M12-2s Firmware Search vendor "Fujitsu" for product "M12-2s Firmware"	< xcp3070 Search vendor "Fujitsu" for product "M12-2s Firmware" and version " < xcp3070"	-	Affected	in	Fujitsu Search vendor "Fujitsu"	M12-2s Search vendor "Fujitsu" for product "M12-2s"	-	-	Safe
Siemens Search vendor "Siemens"	Scalance X204rna Firmware Search vendor "Siemens" for product "Scalance X204rna Firmware"	< 3.2.7 Search vendor "Siemens" for product "Scalance X204rna Firmware" and version " < 3.2.7"	-	Affected	in	Siemens Search vendor "Siemens"	Scalance X204rna Search vendor "Siemens" for product "Scalance X204rna"	-	-	Safe
Siemens Search vendor "Siemens"	Scalance X204rna Eec Firmware Search vendor "Siemens" for product "Scalance X204rna Eec Firmware"	< 3.2.7 Search vendor "Siemens" for product "Scalance X204rna Eec Firmware" and version " < 3.2.7"	-	Affected	in	Siemens Search vendor "Siemens"	Scalance X204rna Eec Search vendor "Siemens" for product "Scalance X204rna Eec"	-	-	Safe
Openbsd Search vendor "Openbsd"		Openssh Search vendor "Openbsd" for product "Openssh"				<= 7.9 Search vendor "Openbsd" for product "Openssh" and version " <= 7.9"		-		Affected
Winscp Search vendor "Winscp"		Winscp Search vendor "Winscp" for product "Winscp"				<= 5.13 Search vendor "Winscp" for product "Winscp" and version " <= 5.13"		-		Affected
Netapp Search vendor "Netapp"		Cloud Backup Search vendor "Netapp" for product "Cloud Backup"				-		-		Affected
Netapp Search vendor "Netapp"		Element Software Search vendor "Netapp" for product "Element Software"				-		-		Affected
Netapp Search vendor "Netapp"		Ontap Select Deploy Search vendor "Netapp" for product "Ontap Select Deploy"				-		-		Affected
Netapp Search vendor "Netapp"		Steelstore Cloud Integrated Storage Search vendor "Netapp" for product "Steelstore Cloud Integrated Storage"				-		-		Affected
Netapp Search vendor "Netapp"		Storage Automation Store Search vendor "Netapp" for product "Storage Automation Store"				-		-		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
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				14.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "14.04"		lts		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				16.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "16.04"		lts		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				18.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "18.04"		lts		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				18.10 Search vendor "Canonical" for product "Ubuntu Linux" and version "18.10"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux"				7.0 Search vendor "Redhat" for product "Enterprise Linux" and version "7.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux"				8.0 Search vendor "Redhat" for product "Enterprise Linux" and version "8.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Eus Search vendor "Redhat" for product "Enterprise Linux Eus"				8.1 Search vendor "Redhat" for product "Enterprise Linux Eus" and version "8.1"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Eus Search vendor "Redhat" for product "Enterprise Linux Eus"				8.2 Search vendor "Redhat" for product "Enterprise Linux Eus" and version "8.2"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Eus Search vendor "Redhat" for product "Enterprise Linux Eus"				8.4 Search vendor "Redhat" for product "Enterprise Linux Eus" and version "8.4"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Eus Search vendor "Redhat" for product "Enterprise Linux Eus"				8.6 Search vendor "Redhat" for product "Enterprise Linux Eus" and version "8.6"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Aus Search vendor "Redhat" for product "Enterprise Linux Server Aus"				8.2 Search vendor "Redhat" for product "Enterprise Linux Server Aus" and version "8.2"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Aus Search vendor "Redhat" for product "Enterprise Linux Server Aus"				8.4 Search vendor "Redhat" for product "Enterprise Linux Server Aus" and version "8.4"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Aus Search vendor "Redhat" for product "Enterprise Linux Server Aus"				8.6 Search vendor "Redhat" for product "Enterprise Linux Server Aus" and version "8.6"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Tus Search vendor "Redhat" for product "Enterprise Linux Server Tus"				8.2 Search vendor "Redhat" for product "Enterprise Linux Server Tus" and version "8.2"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Tus Search vendor "Redhat" for product "Enterprise Linux Server Tus"				8.4 Search vendor "Redhat" for product "Enterprise Linux Server Tus" and version "8.4"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Tus Search vendor "Redhat" for product "Enterprise Linux Server Tus"				8.6 Search vendor "Redhat" for product "Enterprise Linux Server Tus" and version "8.6"		-		Affected
Oracle Search vendor "Oracle"		Solaris Search vendor "Oracle" for product "Solaris"				10 Search vendor "Oracle" for product "Solaris" and version "10"		-		Affected