CVE-2015-1340: Github.com/lxc/lxd LXD Vulnerable To Race Condition Vulnerability

HIGH
Advisory Identifier: GHSA-8mpq-fmr3-6jxv
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CVSS 8.1
CWE-362
Published
Advisory Summary

CVE-2015-1340 is a HIGH (CVSS 8.1) lxd vulnerable to race condition vulnerability (CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')) affecting Github.com/lxc/lxd libraries in the Go ecosystem. The issue involves lxd vulnerable to race condition. Remediation is available by upgrading affected packages to version 0.0.0-20151004155856-19c6961cc101.

CVE-2015-1340 at a Glance

CVE Identifier CVE-2015-1340
GHSA Identifier GHSA-8mpq-fmr3-6jxv
Severity HIGH
CVSS v3.1 Base Score 8.1
CWE Classification CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Affected Product Github.com/lxc/lxd
Package Ecosystem Go
Published Date
Last Updated

Security Impact

CVSS: 8.1

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity High (AC:H)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2015-1340

To remediate this vulnerability, upgrade all affected Github.com/lxc/lxd dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

github.com/lxc/lxd fixed: 0.0.0-20151004155856-19c6961cc101 
Upgrade github.com/lxc/lxd to 0.0.0-20151004155856-19c6961cc101
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for github.com/lxc/lxd

How to Check if You Are Affected

To determine whether your application is affected by CVE-2015-1340, inspect your project dependencies for Github.com/lxc/lxd:

inspect dependencies for github.com/lxc/lxd

Analyze the terminal output to locate any version of Github.com/lxc/lxd in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.0.0-20151004155856-19c6961cc101), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition'), where the product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently. In Github.com/lxc/lxd, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

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. ### Specific Go Packages Affected github.com/lxc/lxd/shared

CVE-2015-1340 Affected Github.com/lxc/lxd Versions

1 component(s)
Fixed Versions:
0.0.0-20151004155856-19c6961cc101
Product / Package Ecosystem Affected Versions Fixed Version
github.com/lxc/lxd
golang/github.com/lxc/lxd
Go
< 0.0.0-20151004155856-19c6961cc101
0.0.0-20151004155856-19c6961cc101

References

NVD — CVE-2015-1340 NVD
https://nvd.nist.gov/vuln/detail/CVE-2015-1340
Github.com/lxc/lxd Source Repository REPOSITORY
https://github.com/lxc/lxd/pull/1189
Security Fix Commit FIX COMMIT
https://github.com/lxc/lxd/commit/19c6961cc1012c8a529f20807328a9357f5034f4
bugs.launchpad.net/ubuntu/+source/lxd/... WEB
https://bugs.launchpad.net/ubuntu/+source/lxd/+bug/1502270
Github.com/lxc/lxd Source Repository REPOSITORY
https://github.com/lxc/lxd
pkg.go.dev/vuln/go-2021-0071 WEB
https://pkg.go.dev/vuln/GO-2021-0071

Frequently Asked Questions

What is CVE-2015-1340?
CVE-2015-1340 is a security vulnerability in Github.com/lxc/lxd involving LXD vulnerable to Race Condition under CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition').
Which Github.com/lxc/lxd versions are affected?
Affected versions include releases prior to 0.0.0-20151004155856-19c6961cc101 across affected packages: github.com/lxc/lxd.
What version fixes CVE-2015-1340?
Upgrading to 0.0.0-20151004155856-19c6961cc101 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/lxc/lxd affected?
Yes, github.com/lxc/lxd is affected in releases prior to 0.0.0-20151004155856-19c6961cc101. Upgrade your dependency to 0.0.0-20151004155856-19c6961cc101 or later.
What is the CVSS score of CVE-2015-1340?
CVE-2015-1340 has a CVSS v3.1 base score of 8.1 (HIGH) with vector string CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2015-1340?
CVE-2015-1340 is classified under CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') (The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.).
How can I check Go dependencies for CVE-2015-1340?
Run the dependency tree command: 'inspect dependencies for github.com/lxc/lxd'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-8mpq-fmr3-6jxv",
  "modified" : "2023-09-29T15:43:23Z",
  "published" : "2022-05-24T16:44:07Z",
  "aliases" : [ "CVE-2015-1340" ],
  "summary" : "LXD vulnerable to Race Condition",
  "details" : "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.\n\n### Specific Go Packages Affected\ngithub.com/lxc/lxd/shared",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/lxc/lxd"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.0.0-20151004155856-19c6961cc101"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2015-1340"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/lxc/lxd/pull/1189"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/lxc/lxd/commit/19c6961cc1012c8a529f20807328a9357f5034f4"
  }, {
    "type" : "WEB",
    "url" : "https://bugs.launchpad.net/ubuntu/+source/lxd/+bug/1502270"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/lxc/lxd"
  }, {
    "type" : "WEB",
    "url" : "https://pkg.go.dev/vuln/GO-2021-0071"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-362" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-02-07T22:39:10Z",
    "nvd_published_at" : "2019-04-22T16:29:00Z"
  }
}