What is CVE-2015-1340?

CVE-2015-1340 is a high-severity vulnerability in Linuxcontainers Lxd, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 7.0/10. Published 2019-04-22.

How severe is CVE-2015-1340?

High severity. CVSS v3 base score is 7.0 out of 10.

Vulnerability in Linuxcontainers Lxd

CVE-2015-1340

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.

Vulnerability class: Race Condition

EPSS: 0.009 (55.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.0 (High). Vector: CVSS:3.0/AV:P/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H.

Affected products

Linuxcontainers Lxd
Ubuntu Lxd — versions unspecified

Weakness classification (CWE)

CWE-362 — Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition)

References

security@ubuntu.com (Patch, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2015-1340?: CVE-2015-1340 is a high-severity vulnerability in Linuxcontainers Lxd, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 7.0/10. Published 2019-04-22.
How severe is CVE-2015-1340?: High severity. CVSS v3 base score is 7.0 out of 10.