CVE-2016-10010

Publication date 4 January 2017

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

sshd in OpenSSH before 7.4, when privilege separation is not used, creates forwarded Unix-domain sockets as root, which might allow local users to gain privileges via unspecified vectors, related to serverloop.c.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
openssh	17.10 artful	Not affected
	17.04 zesty	Not affected
	16.10 yakkety	Ignored end of life
	16.04 LTS xenial	Fixed 1:7.2p2-4ubuntu2.4
	14.04 LTS trusty	Not affected
	12.04 LTS precise	Not affected

Notes

sbeattie

unix socket forwarding was introduced in openssh 6.7

mdeslaur

privilege separation is enabled in Debian/Ubuntu

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
openssh	Upstream: b737e4d Upstream: 5104586

Severity score breakdown

Parameter	Value
Base score	7.0 · High
Attack vector	Local
Attack complexity	High
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

USN-3538-1
OpenSSH vulnerabilities
22 January 2018