CVE-2021-22903
Published Jun 11, 2021
Last updated 3 years ago
Overview
- Description
- The actionpack ruby gem before 6.1.3.2 suffers from a possible open redirect vulnerability. Specially crafted Host headers in combination with certain "allowed host" formats can cause the Host Authorization middleware in Action Pack to redirect users to a malicious website. This is similar to CVE-2021-22881. Strings in config.hosts that do not have a leading dot are converted to regular expressions without proper escaping. This causes, for example, `config.hosts << "sub.example.com"` to permit a request with a Host header value of `sub-example.com`.
- Source
- support@hackerone.com
- NVD status
- Analyzed
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 6.1
- Impact score
- 2.7
- Exploitability score
- 2.8
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- Severity
- MEDIUM
CVSS 2.0
- Type
- Primary
- Base score
- 5.8
- Impact score
- 4.9
- Exploitability score
- 8.6
- Vector string
- AV:N/AC:M/Au:N/C:P/I:P/A:N
Social media
- Hype score
- Not currently trending
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:rubyonrails:rails:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "3CAFC5D0-4073-430A-B9A1-5CF37A75EC7F",
"versionEndExcluding": "6.1.3.2",
"versionStartIncluding": "6.1.1"
},
{
"criteria": "cpe:2.3:a:rubyonrails:rails:6.1.0:rc2:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "B4431B78-31D7-4845-920B-238B355BF890"
}
],
"operator": "OR"
}
]
}
]