CVE-2019-14889

libssh: unsanitized location in scp could lead to unwanted command execution

Severity Score

8.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A flaw was found with the libssh API function ssh_scp_new() in versions before 0.9.3 and before 0.8.8. When the libssh SCP client connects to a server, the scp command, which includes a user-provided path, is executed on the server-side. In case the library is used in a way where users can influence the third parameter of the function, it would become possible for an attacker to inject arbitrary commands, leading to a compromise of the remote target.

Se detectó un fallo con la función ssh_scp_new() de la API libssh en versiones anteriores a 0.9.3 y anteriores a 0.8.8. Cuando el cliente libssh SCP se conecta a un servidor, el comando scp, que incluye una ruta provista por el usuario, es ejecutado en el lado del servidor. En caso de que la biblioteca sea usada de manera que los usuarios puedan influir en el tercer parámetro de la función, sería posible para un atacante inyectar comandos arbitrarios, lo que comprometería el objetivo remoto.

A flaw was found with the libssh API function ssh_scp_new(). A user able to connect to a server using SCP could execute arbitrary command using a user-provided path, leading to a compromise of the remote target.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2019-08-10 CVE Reserved
2019-12-10 CVE Published
2024-04-04 EPSS Updated
2024-08-05 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

CAPEC

References (13)

URL	Tag	Source
https://lists.debian.org/debian-lts-announce/2019/12/msg00020.html	Mailing List
https://lists.debian.org/debian-lts-announce/2023/05/msg00029.html	Mailing List
https://www.oracle.com/security-alerts/cpuapr2020.html	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14889	2023-11-07

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00033.html	2023-11-07
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00047.html	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7JJWJTXVWLLJTVHBPGWL7472S5FWXYQR	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EV2ONSPDJCTDVORCB4UGRQUZQQ46JHRN	2023-11-07
https://security.gentoo.org/glsa/202003-27	2023-11-07
https://usn.ubuntu.com/4219-1	2023-11-07
https://www.libssh.org/security/advisories/CVE-2019-14889.txt	2023-11-07
https://access.redhat.com/security/cve/CVE-2019-14889	2020-11-04
https://bugzilla.redhat.com/show_bug.cgi?id=1772523	2020-11-04

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Libssh Search vendor "Libssh"		Libssh Search vendor "Libssh" for product "Libssh"				< 0.8.8 Search vendor "Libssh" for product "Libssh" and version " < 0.8.8"		-		Affected
Libssh Search vendor "Libssh"		Libssh Search vendor "Libssh" for product "Libssh"				>= 0.9.0 < 0.9.3 Search vendor "Libssh" for product "Libssh" and version " >= 0.9.0 < 0.9.3"		-		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"				19.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "19.04"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				19.10 Search vendor "Canonical" for product "Ubuntu Linux" and version "19.10"		-		Affected
Opensuse Search vendor "Opensuse"		Leap Search vendor "Opensuse" for product "Leap"				15.1 Search vendor "Opensuse" for product "Leap" and version "15.1"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				30 Search vendor "Fedoraproject" for product "Fedora" and version "30"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				31 Search vendor "Fedoraproject" for product "Fedora" and version "31"		-		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
Oracle Search vendor "Oracle"		Mysql Workbench Search vendor "Oracle" for product "Mysql Workbench"				<= 8.0.19 Search vendor "Oracle" for product "Mysql Workbench" and version " <= 8.0.19"		-		Affected