UBUNTU-CVE-2018-18654

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Source

https://ubuntu.com/security/CVE-2018-18654

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-18654.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2018-18654

Upstream

CVE-2018-18654

Published

2018-10-26T00:29:00Z

Modified

2025-10-24T04:47:15Z

Severity

7.8 (High) CVSS_V3 - CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Ubuntu - medium

Summary

[none]

Details

Crossroads 2.81 does not properly handle the /tmp directory during a build of xr. A local attacker can first create a world-writable subdirectory in a certain location under the /tmp directory, wait until a user process copies xr there, and then replace the entire contents of this subdirectory to include a Trojan horse xr.

References

Affected packages

Ubuntu:16.04:LTS / crossroads

Package

Name: crossroads
Purl: pkg:deb/ubuntu/crossroads@2.65-2?arch=source&distro=xenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.65-1.1

2.65-2

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "crossroads",
            "binary_version": "2.65-2"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-18654.json"

Ubuntu:18.04:LTS / crossroads