CVE-2019-14889 - Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

Severity

80%

Complexity

21%

Confidentiality

98%

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.

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.

CVSS 3.1 Base Score 8. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H).

CVSS 2.0 Base Score 9.3. CVSS Attack Vector: network. CVSS Attack Complexity: medium. CVSS Vector: (AV:N/AC:M/Au:N/C:C/I:C/A:C).

Overview

Type

Canonical Ubuntu Linux

First reported 5 years ago

2019-12-10 23:15:00

Last updated 4 years ago

2020-03-15 19:15:00

Affected Software

Canonical Ubuntu Linux 16.04 LTS (Long-Term Support)

16.04

Canonical Ubuntu Linux 18.04 LTS Edition

18.04

Canonical Ubuntu Linux 19.04

19.04

Canonical Ubuntu Linux 19.10

19.10

References

openSUSE-SU-2019:2689

Third Party Advisory

openSUSE-SU-2020:0102

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14889

Issue Tracking, Third Party Advisory

[debian-lts-announce] 20191217 [SECURITY] [DLA 2038-1] libssh security update

Third Party Advisory

FEDORA-2019-8b0ad69829

Third Party Advisory

FEDORA-2019-46b6bd2459

GLSA-202003-27

USN-4219-1

Third Party Advisory

https://www.libssh.org/security/advisories/CVE-2019-14889.txt

Vendor Advisory

N/A

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