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Gentoo Linux GLSA-202003-09 High: OpenID Server Request Forgery

gentoo
Calendar Grey March 14, 2020
Dist Gentoo Esm H88
An essential notification regarding the Ruby OpenID framework highlights possible security vulnerabilities leading to authentication evasion for Gentoo users.
A vulnerability in OpenID library for Ruby at worst might allow an attacker to bypass authentication.

Summary

It was discovered that OpenID library for Ruby performed discovery first, and then verification.

Topics%20covered

Topics Covered

security advisory Gentoo high severity remote attack authentication bypass server-side request forgery OpenID library

Resolution

All ruby-openid users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=dev-ruby/ruby-openid-2.9.2"

References

[ 1 ] CVE-2019-11027 https://nvd.nist.gov/vuln/detail/CVE-2019-11027

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/202003-09
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Concerns

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.

Severity: High
Title: OpenID library for Ruby: Server Side Request Forgery
Date: March 14, 2020
Bugs: #698464
ID: 202003-09

Topics%20covered

Topics Covered

security advisory Gentoo high severity remote attack authentication bypass server-side request forgery OpenID library

Synopsis

A vulnerability in OpenID library for Ruby at worst might allow an attacker to bypass authentication.

Background

A Ruby library for verifying and serving OpenID identities.

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Affected Packages

------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 dev-ruby/ruby-openid < 2.9.2 >= 2.9.2

Impact

===== A remote attacker could possibly change the URL used for discovery and trick the server into connecting to the URL. This server in turn could be a private server not publicly accessible. In addition, if the client that uses this library discloses connection errors, this in turn could disclose information from the private server to the attacker.

Workaround

There is no known workaround at this time.

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