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Alerts This Week
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Ubuntu 15.10 & 15.04: USN-2813-1 Critical LXCFS Privilege Escalation

ubuntu
Calendar Grey November 17, 2015
Scroller Ubuntu
LXCFS security flaws impact Ubuntu 16.04 and 16.10; various vulnerabilities resolved through essential update procedures.
Several security issues were fixed in LXCFS.

Summary

Several security issues were fixed in LXCFS.

Software Description:

- lxcfs: FUSE based filesystem for LXC

Details:

It was discovered that LXCFS incorrectly enforced directory escapes. A

local attacker could use this issue to possibly escalate privileges.

(CVE-2015-1342)

It was discovered that LXCFS incorrectly checked certain permissions. A

local attacker could use this issue t possibly escalate privileges.

(CVE-2015-1344)

Topics%20covered

Topics Covered

security advisory critical privilege escalation Ubuntu local attack LXCFS

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 15.10:
  lxcfs                           0.10-0ubuntu2.1

Ubuntu 15.04:
  lxcfs                           0.7-0ubuntu4.1

After a standard system update you need to reboot your computer to make
all the necessary changes.

References

https://ubuntu.com/security/notices/USN-2813-1

CVE-2015-1342, CVE-2015-1344

Severity
critical
Lowest
Low
Medium
High
Critical

November 17, 2015

Topics%20covered

Topics Covered

security advisory critical privilege escalation Ubuntu local attack LXCFS

Package Information

https://launchpad.net/ubuntu/+source/lxcfs/0.10-0ubuntu2.1
https://launchpad.net/ubuntu/+source/lxcfs/0.7-0ubuntu4.1

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