Ecosyste.ms: Advisories

Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLWZxZmotY21oNi1oajQ5

ruby-openid SSRF via claimed_id request

Ruby OpenID (aka ruby-openid) through 2.8.0 is vulnerable to SSRF. Ruby-openid performs discovery first, and then verification. This allows an attacker to change the URL used for discovery and trick the server into connecting to the URL, which might be a private server not publicly accessible. 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.

Permalink: https://github.com/advisories/GHSA-fqfj-cmh6-hj49
JSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLWZxZmotY21oNi1oajQ5
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Critical
Classification: General
Published: over 5 years ago
Updated: over 1 year ago

CVSS Score: 9.8
CVSS vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Percentage: 0.00517
EPSS Percentile: 0.7704

Identifiers: GHSA-fqfj-cmh6-hj49, CVE-2019-11027
References:

• https://nvd.nist.gov/vuln/detail/CVE-2019-11027
• https://marc.info/?l=openid-security&m=155154717027534&w=2
• https://github.com/openid/ruby-openid/issues/122
• https://lists.debian.org/debian-lts-announce/2019/10/msg00014.html
• https://security.gentoo.org/glsa/202003-09
• https://github.com/openid/ruby-openid/commit/d181a8a2099c64365a1d24b29f6b6b646673a131
• https://github.com/openid/ruby-openid/releases/tag/v2.9.0
• https://github.com/rubysec/ruby-advisory-db/blob/master/gems/ruby-openid/CVE-2019-11027.yml
• https://github.com/advisories/GHSA-fqfj-cmh6-hj49

Repository: https://github.com/openid/ruby-openid
Blast Radius: 37.7

Affected Packages