CVE-2019-3463

Publication date 6 February 2019

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

Insufficient sanitization of arguments passed to rsync can bypass the restrictions imposed by rssh, a restricted shell that should restrict users to perform only rsync operations, resulting in the execution of arbitrary shell commands.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
rssh	18.10 cosmic	Fixed 2.3.4-8ubuntu0.2
	18.04 LTS bionic	Fixed 2.3.4-7ubuntu0.1
	16.04 LTS xenial	Fixed 2.3.4-4+deb8u2ubuntu0.16.04.2
	14.04 LTS trusty	Fixed 2.3.4-4+deb8u2ubuntu0.14.04.2

Notes

sbeattie

when fixing bionic and cosmic, note regression introduced in included fix (debian bug #921655)

Severity score breakdown

Parameter	Value
Base score	9.8 · Critical
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

USN-3946-1
rssh vulnerabilities
11 April 2019