CVE-2015-1340

chmod race in doUidshiftIntoContainer

Description

LXD before version 0.19-0ubuntu5 doUidshiftIntoContainer() has an unsafe Chmod() call that races against the stat in the Filepath.Walk() function. A symbolic link created in that window could cause any file on the system to have any mode of the attacker's choice.

Category

7.0
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.32%
Third-Party Advisory github.com
Affected: Ubuntu LXD
Published at:
Updated at:

References

Link Tags
https://github.com/lxc/lxd/commit/19c6961cc1012c8a529f20807328a9357f5034f4 third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2015-1340?
CVE-2015-1340 has been scored as a high severity vulnerability.
How to fix CVE-2015-1340?
To fix CVE-2015-1340, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2015-1340 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2015-1340 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2015-1340?
CVE-2015-1340 affects Ubuntu LXD.
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