Executive Summary

Summary
Title rssh vulnerabilities
Informations
NameUSN-3946-1First vendor Publication2019-04-11
VendorUbuntuLast vendor Modification2019-04-11
Severity (Vendor) N/ARevisionN/A

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:P/I:P/A:P)
Cvss Base Score7.5Attack RangeNetwork
Cvss Impact Score6.4Attack ComplexityLow
Cvss Expoit Score10AuthenticationNone Required
Calculate full CVSS 2.0 Vectors scores

Detail

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 18.10 - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS - Ubuntu 14.04 LTS

Summary:

rssh could be made to run arbitrary commands if it received specially crafted input.

Software Description: - rssh: Restricted shell allowing scp, sftp, cvs, svn, rsync or rdist

Details:

It was discovered that rssh incorrectly handled certain command-line arguments and environment variables. An authenticated user could bypass rssh's command restrictions, allowing an attacker to run arbitrary commands.

Update instructions:

The problem can be corrected by updating your system to the following package versions:

Ubuntu 18.10:
rssh 2.3.4-8ubuntu0.2

Ubuntu 18.04 LTS:
rssh 2.3.4-7ubuntu0.1

Ubuntu 16.04 LTS:
rssh 2.3.4-4+deb8u2ubuntu0.16.04.2

Ubuntu 14.04 LTS:
rssh 2.3.4-4+deb8u2ubuntu0.14.04.2

In general, a standard system update will make all the necessary changes.

References:
https://usn.ubuntu.com/usn/usn-3946-1
CVE-2019-1000018, CVE-2019-3463, CVE-2019-3464

Package Information:
https://launchpad.net/ubuntu/+source/rssh/2.3.4-8ubuntu0.2
https://launchpad.net/ubuntu/+source/rssh/2.3.4-7ubuntu0.1
https://launchpad.net/ubuntu/+source/rssh/2.3.4-4+deb8u2ubuntu0.16.04.2
https://launchpad.net/ubuntu/+source/rssh/2.3.4-4+deb8u2ubuntu0.14.04.2

Original Source

Url : http://www.ubuntu.com/usn/USN-3946-1

CWE : Common Weakness Enumeration

%idName
67 %CWE-20Improper Input Validation
33 %CWE-77Improper Sanitization of Special Elements used in a Command ('Command Injection')

CPE : Common Platform Enumeration

TypeDescriptionCount
Application1
Os2

Alert History

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0
DateInformations
2019-04-12 00:18:40
  • First insertion