CVE-2013-1858

Publication date 5 April 2013

Last updated 24 July 2024

Ubuntu priority

High

Why this priority?

Description

The clone system-call implementation in the Linux kernel before 3.8.3 does not properly handle a combination of the CLONE_NEWUSER and CLONE_FS flags, which allows local users to gain privileges by calling chroot and leveraging the sharing of the / directory between a parent process and a child process.

Read the notes from the security team

Status

Package Ubuntu Release Status
linux 12.10 quantal
Not affected
12.04 LTS precise
Not affected
11.10 oneiric
Not affected
10.04 LTS lucid
Not affected
8.04 LTS hardy
Not affected
linux-armadaxp 12.10 quantal
Not affected
12.04 LTS precise
Not affected
11.10 oneiric Not in release
10.04 LTS lucid Not in release
8.04 LTS hardy Not in release
linux-ec2 12.10 quantal Not in release
12.04 LTS precise Not in release
11.10 oneiric Not in release
10.04 LTS lucid
Not affected
8.04 LTS hardy Not in release
linux-fsl-imx51 12.10 quantal Not in release
12.04 LTS precise Not in release
11.10 oneiric Not in release
10.04 LTS lucid Ignored end of life
8.04 LTS hardy Not in release
linux-linaro-omap 12.10 quantal Ignored end of life
12.04 LTS precise Ignored end of life
11.10 oneiric Ignored end of life
10.04 LTS lucid Not in release
8.04 LTS hardy Not in release
linux-linaro-shared 12.10 quantal Ignored end of life
12.04 LTS precise Ignored end of life
11.10 oneiric Ignored end of life
10.04 LTS lucid Not in release
8.04 LTS hardy Not in release
linux-linaro-vexpress 12.10 quantal Ignored end of life
12.04 LTS precise Ignored end of life
11.10 oneiric Ignored end of life
10.04 LTS lucid Not in release
8.04 LTS hardy Not in release
linux-lts-backport-maverick 12.10 quantal Not in release
12.04 LTS precise Not in release
11.10 oneiric Not in release
10.04 LTS lucid Ignored end of life
8.04 LTS hardy Not in release
linux-lts-backport-oneiric 12.10 quantal Not in release
12.04 LTS precise Not in release
11.10 oneiric Not in release
10.04 LTS lucid
Not affected
8.04 LTS hardy Not in release
linux-lts-quantal 12.10 quantal Not in release
12.04 LTS precise
Not affected
11.10 oneiric Not in release
10.04 LTS lucid Not in release
8.04 LTS hardy Not in release
linux-mvl-dove 12.10 quantal Not in release
12.04 LTS precise Not in release
11.10 oneiric Not in release
10.04 LTS lucid Ignored end of life
8.04 LTS hardy Not in release
linux-qcm-msm 12.10 quantal Ignored end of life
12.04 LTS precise Ignored end of life
11.10 oneiric Ignored end of life
10.04 LTS lucid Ignored end of life
8.04 LTS hardy Not in release
linux-ti-omap4 12.10 quantal
Not affected
12.04 LTS precise
Not affected
11.10 oneiric
Not affected
10.04 LTS lucid Not in release
8.04 LTS hardy Not in release

Notes

mdeslaur

reproducer: http://stealth.openwall.net/xSports/clown-newuser.c

jdstrand

this became privilege esclation when 5eaf563e53294d6696e651466697eb9d491f3946 removed the checks for CAP_SYS_ADMIN, CAP_SETUID and CAP_SETGID

Patch details

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

Package Patch details
linux

References

Other references