CVE-2015-1340 chmod race in doUidshiftIntoContainer

HighCVSS 8.1 EPSS 0.90%

Published: 2019-04-22 18:35
Updated: 2026-06-17 03:22
Exploit status: No public exploit known

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.

Affected products

Product	Affected versions	Fixed in
lxc github.com/lxc/lxd(Go)	< 0.0.0-20151004155856-19c6961cc101	0.0.0-20151004155856-19c6961cc101
linuxcontainers lxd	All versions	No fix listed
ubuntu LXD	< 0.19-0ubuntu5	0.19-0ubuntu5

References

nvd.nist.gov third-party-advisory vendor-advisory
github.com patch third-party-advisory
github.com patch
bugs.launchpad.net
pkg.go.dev
github.com
github.com product
Debian Security Tracker CVE-2015-1340 vendor-advisory

CVSS v3.0

8.1 High

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector: Network
Attack Complexity: High
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: High
Availability: High

All scores (6)

v3.0 7.0 · canonical
v3.0 8.1 · nvd@nist.gov
v3.0 8.1 · github
v3.0 8.1 · osv:ghsa
v3.0 7.0 · security@ubuntu.com
v2.0 6.8 · nvd@nist.gov

Weakness & likelihood

EPSS (exploitation probability, 30 days): 0.90% (percentile 60.1)
CWE: CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization

Public exploit references

Metadata only. CVERadar never hosts or runs exploit code.

No public exploit references known.