What is CVE-2019-12300?

CVE-2019-12300 is a critical-severity vulnerability in Buildbot, classified under Improper Authentication. CVSS score: 9.8/10. Published 2019-05-23.

How severe is CVE-2019-12300?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Auth bypass in Buildbot

CVE-2019-12300

Buildbot before 1.8.2 and 2.x before 2.3.1 accepts a user-submitted authorization token from OAuth and uses it to authenticate a user. If an attacker has a token allowing them to read the user details of a victim, they can login as the victim.

Vulnerability class: Broken Authentication

EPSS: 0.018 (76.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Buildbot
N/a — versions n/a

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

cve@mitre.org (Patch, Third Party Advisory, x_refsource_MISC, Mitigation)
cve@mitre.org (x_refsource_FEDORA, vendor-advisory)
cve@mitre.org (x_refsource_FEDORA, vendor-advisory)

Frequently asked questions

What is CVE-2019-12300?: CVE-2019-12300 is a critical-severity vulnerability in Buildbot, classified under Improper Authentication. CVSS score: 9.8/10. Published 2019-05-23.
How severe is CVE-2019-12300?: Critical severity. CVSS v3 base score is 9.8 out of 10.