CVE-2017-2616

Publication date 22 February 2017

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

A race condition was found in util-linux before 2.32.1 in the way su handled the management of child processes. A local authenticated attacker could use this flaw to kill other processes with root privileges under specific conditions.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
shadow	19.04 disco	Fixed 1:4.2-3.2ubuntu2
	18.10 cosmic	Fixed 1:4.2-3.2ubuntu2
	18.04 LTS bionic	Fixed 1:4.2-3.2ubuntu2
	17.10 artful	Fixed 1:4.2-3.2ubuntu2
	17.04 zesty	Fixed 1:4.2-3.2ubuntu1.17.04.1
	16.10 yakkety	Fixed 1:4.2-3.2ubuntu1.16.10.1
	16.04 LTS xenial	Fixed 1:4.2-3.1ubuntu5.2
	14.04 LTS trusty	Fixed 1:4.1.5.1-1ubuntu9.4
	12.04 LTS precise	Ignored end of life
util-linux	19.04 disco	Not affected
	18.10 cosmic	Not affected
	18.04 LTS bionic	Not affected
	17.10 artful	Ignored end of life
	17.04 zesty	Ignored end of life
	16.10 yakkety	Ignored end of life
	16.04 LTS xenial	Not affected
	14.04 LTS trusty	Not affected
	12.04 LTS precise	Ignored end of life

Notes

sbeattie

ubuntu uses su from shadow package, not util-linux up until (2.32-0.2)

Patch details

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

Package	Patch details
shadow	Upstream: 08fd4b6
util-linux	Upstream: dffab15

Severity score breakdown

Parameter	Value
Base score	4.7 · Medium
Attack vector	Local
Attack complexity	High
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

USN-3276-1
shadow vulnerabilities
5 May 2017

USN-3276-3
shadow vulnerability
14 November 2017

Other references

https://www.cve.org/CVERecord?id=CVE-2017-2616