What is CVE-2018-18654?

CVE-2018-18654 is a high-severity vulnerability in Debian Crossroads, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 7.8/10. Published 2018-10-26.

How severe is CVE-2018-18654?

High severity. CVSS v3 base score is 7.8 out of 10.

Vulnerability in Debian Crossroads

CVE-2018-18654

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.

EPSS: 0.003 (22.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Debian Crossroads — versions 2.81
N/a — versions n/a

Weakness classification (CWE)

CWE-732 — Incorrect Permission Assignment for Critical Resource

References

cve@mitre.org (Mailing List, x_refsource_MISC, Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2018-18654?: CVE-2018-18654 is a high-severity vulnerability in Debian Crossroads, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 7.8/10. Published 2018-10-26.
How severe is CVE-2018-18654?: High severity. CVSS v3 base score is 7.8 out of 10.