FreeBSD : buildbot -- OAuth Authentication Vulnerability (ada8db8a-8471-11e9-8170-0050562a4d7b)

critical Nessus Plugin ID 125663

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Synopsis

The remote FreeBSD host is missing one or more security-related updates.

Description

Buildbot accepted user-submitted authorization token from OAuth and used it to authenticate user.

The vulnerability can lead to malicious attackers to authenticate as legitimate users of a Buildbot instance without knowledge of the victim's login credentials on certain scenarios.

If an attacker has an application authorized to access data of another user at the same Identity Provider as the used by the Buildbot instance, then he can acquire a token to access the data of that user, supply the token to the Buildbot instance and successfully login as the victim.

Solution

Update the affected packages.

Plugin Details

Severity: Critical

ID: 125663

File Name: freebsd_pkg_ada8db8a847111e981700050562a4d7b.nasl

Version: 1.2

Type: local

Family: FreeBSD Local Security Checks

Published: 6/3/2019

Updated: 1/13/2020

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:py27-buildbot, p-cpe:/a:freebsd:freebsd:py35-buildbot, p-cpe:/a:freebsd:freebsd:py36-buildbot, p-cpe:/a:freebsd:freebsd:py37-buildbot, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Exploit Ease: No known exploits are available

Patch Publication Date: 6/1/2019

Vulnerability Publication Date: 5/7/2019

Reference Information

CVE: CVE-2019-12300

Detections

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