CVE-2016-0778

Publication date 14 January 2016

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

The (1) roaming_read and (2) roaming_write functions in roaming_common.c in the client in OpenSSH 5.x, 6.x, and 7.x before 7.1p2, when certain proxy and forward options are enabled, do not properly maintain connection file descriptors, which allows remote servers to cause a denial of service (heap-based buffer overflow) or possibly have unspecified other impact by requesting many forwardings.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
openssh	15.10 wily	Fixed 1:6.9p1-2ubuntu0.1
	15.04 vivid	Fixed 1:6.7p1-5ubuntu1.4
	14.04 LTS trusty	Fixed 1:6.6p1-2ubuntu2.4
	12.04 LTS precise	Fixed 1:5.9p1-5ubuntu1.8

Severity score breakdown

Parameter	Value
Base score	8.1 · High
Attack vector	Network
Attack complexity	High
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

USN-2869-1
OpenSSH vulnerabilities
14 January 2016