9.8
CRITICAL
CVE-2019-11027
Ruby OpenID OpenID Authentication Bypass
Description

Ruby OpenID (aka ruby-openid) through 2.8.0 has a remotely exploitable flaw. This library is used by Rails web applications to integrate with OpenID Providers. Severity can range from medium to critical, depending on how a web application developer chose to employ the ruby-openid library. Developers who based their OpenID integration heavily on the "example app" provided by the project are at highest risk.

INFO

Published Date :

June 10, 2019, 7:29 p.m.

Last Modified :

June 14, 2019, 12:29 p.m.

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2019-11027 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Openid ruby-openid
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2019-11027.

URL Resource
https://github.com/openid/ruby-openid/issues/122
https://lists.debian.org/debian-lts-announce/2019/10/msg00014.html
https://marc.info/?l=openid-security&m=155154717027534&w=2 Mailing List Third Party Advisory
https://security.gentoo.org/glsa/202003-09

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2019-11027 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2019-11027 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Mar. 14, 2020

    Action Type Old Value New Value
    Added Reference https://security.gentoo.org/glsa/202003-09 [No Types Assigned]
  • CVE Modified by [email protected]

    Oct. 11, 2019

    Action Type Old Value New Value
    Added Reference https://lists.debian.org/debian-lts-announce/2019/10/msg00014.html [No Types Assigned]
  • CVE Modified by [email protected]

    Jun. 14, 2019

    Action Type Old Value New Value
    Added Reference https://github.com/openid/ruby-openid/issues/122 [No Types Assigned]
  • Initial Analysis by [email protected]

    Jun. 11, 2019

    Action Type Old Value New Value
    Added CVSS V2 Metadata Access Complexity Insufficient Information
    Added CVSS V2 (AV:N/AC:L/Au:N/C:C/I:C/A:C)
    Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://marc.info/?l=openid-security&m=155154717027534&w=2 No Types Assigned https://marc.info/?l=openid-security&m=155154717027534&w=2 Mailing List, Third Party Advisory
    Added CWE NVD-CWE-noinfo
    Added CPE Configuration OR *cpe:2.3:a:openid:ruby-openid:*:*:*:*:*:*:*:* versions up to (including) 2.8.0
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2019-11027 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2019-11027 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.52 }} 0.16%

score

0.76715

percentile

CVSS30 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability