Executive Summary

Summary
Title libssh: Arbitrary command execution
Informations
Name GLSA-202003-27 First vendor Publication 2020-03-15
Vendor Gentoo Last vendor Modification 2020-03-15
Severity (Vendor) N/A Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Overall CVSS Score 8
Base Score 8 Environmental Score 8
impact SubScore 5.9 Temporal Score 8
Exploitabality Sub Score 2.1
 
Attack Vector Network Attack Complexity Low
Privileges Required Low User Interaction Required
Scope Unchanged Confidentiality Impact High
Integrity Impact High Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:M/Au:N/C:C/I:C/A:C)
Cvss Base Score 9.3 Attack Range Network
Cvss Impact Score 10 Attack Complexity Medium
Cvss Expoit Score 8.6 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Synopsis

A vulnerability in libssh could allow a remote attacker to execute arbitrary commands.

Background

libssh is a multiplatform C library implementing the SSHv2 protocol on client and server side.

Description

It was discovered that libssh incorrectly handled certain scp commands.

Impact

A remote attacker could trick a victim into using a specially crafted scp command, possibly resulting in the execution of arbitrary commands on the server.

Workaround

There is no known workaround at this time.

Resolution

All libssh users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-libs/libssh-0.9.3"

References

[ 1 ] CVE-2019-14889 : https://nvd.nist.gov/vuln/detail/CVE-2019-14889

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website:

https://security.gentoo.org/glsa/202003-27

Original Source

Url : http://security.gentoo.org/glsa/glsa-202003-27.xml

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-74 Failure to Sanitize Data into a Different Plane ('Injection')

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 26
Os 4

Alert History

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0
1
Date Informations
2020-05-23 13:03:43
  • Multiple Updates
2020-03-15 21:17:52
  • First insertion