CVE-2016-6252

Publication date 17 February 2017

Last updated 25 August 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.8 · High

Score breakdown

Description

Integer overflow in shadow 4.2.1 allows local users to gain privileges via crafted input to newuidmap.

Read the notes from the security team

Status

Package Ubuntu Release Status
shadow 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
15.10 wily Ignored end of life
14.04 LTS trusty
Fixed 1:4.1.5.1-1ubuntu9.4
12.04 LTS precise Ignored end of life

Notes

leosilva

shadow version for precise-esm and vivid/ubuntu-core doesn't use newuidmap binaries neither does any privileged access that makes this fix necessary.

Patch details

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

Package Patch details
shadow

Severity score breakdown

Parameter Value
Base score 7.8 · High
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

Other references