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Package Instance

Lookup for vulnerable packages by Package URL.

Purlpkg:gem/railties@5.2.2.0
Typegem
Namespace
Namerailties
Version5.2.2.0
Qualifiers
Subpath
Is_vulnerabletrue
Next_non_vulnerable_version5.2.2.1
Latest_non_vulnerable_version6.0.0
Affected_by_vulnerabilities
0
url VCID-bepd-668e-13h8
vulnerability_id VCID-bepd-668e-13h8
summary 
Use of Insufficiently Random Values in Railties Allows Remote Code Execution
# Possible Remote Code Execution Exploit in Rails Development Mode

Impact 
------ 
With some knowledge of a target application it is possible for an attacker to  guess the automatically generated development mode secret token.  This secret  token can be used in combination with other Rails internals to escalate to a remote code execution exploit. 

All users running an affected release should either upgrade or use one of the workarounds immediately. 

Releases 
-------- 
The 6.0.0.beta3 and 5.2.2.1 releases are available at the normal locations. 

Workarounds 
----------- 
This issue can be mitigated by specifying a secret key in development mode. 
In "config/environments/development.rb" add this: 

```
  config.secret_key_base = SecureRandom.hex(64) 
```

Please note that only the 5.2.x, 5.1.x, 5.0.x, and 4.2.x series are supported at present. Users of earlier unsupported releases are advised to upgrade as soon as possible as we cannot guarantee the continued availability of security fixes for unsupported releases. 

Credits 
------- 
Thanks to ooooooo_q
references
0
reference_url http://packetstormsecurity.com/files/152704/Ruby-On-Rails-DoubleTap-Development-Mode-secret_key_base-Remote-Code-Execution.html
reference_id
reference_type
scores
0
value 9.8
scoring_system cvssv3.1
scoring_elements CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
1
value CRITICAL
scoring_system generic_textual
scoring_elements
url http://packetstormsecurity.com/files/152704/Ruby-On-Rails-DoubleTap-Development-Mode-secret_key_base-Remote-Code-Execution.html
1
reference_url https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-5420.json
reference_id
reference_type
scores
0
value 8.1
scoring_system cvssv3
scoring_elements CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
url https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-5420.json
2
reference_url https://api.first.org/data/v1/epss?cve=CVE-2019-5420
reference_id
reference_type
scores
0
value 0.93745
scoring_system epss
scoring_elements 0.9986
published_at 2026-05-29T12:55:00Z
url https://api.first.org/data/v1/epss?cve=CVE-2019-5420
3
reference_url https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-5420
reference_id
reference_type
scores
url https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-5420
4
reference_url https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
reference_id
reference_type
scores
0
value 8.1
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
url https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
5
reference_url https://github.com/rubysec/ruby-advisory-db/blob/master/gems/railties/CVE-2019-5420.yml
reference_id
reference_type
scores
0
value 9.8
scoring_system cvssv3.1
scoring_elements CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
1
value CRITICAL
scoring_system generic_textual
scoring_elements
url https://github.com/rubysec/ruby-advisory-db/blob/master/gems/railties/CVE-2019-5420.yml
6
reference_url https://groups.google.com/forum/#!topic/rubyonrails-security/IsQKvDqZdKw
reference_id
reference_type
scores
0
value 9.8
scoring_system cvssv3
scoring_elements
1
value 9.8
scoring_system cvssv3.1
scoring_elements CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
2
value CRITICAL
scoring_system generic_textual
scoring_elements
url https://groups.google.com/forum/#!topic/rubyonrails-security/IsQKvDqZdKw
7
reference_url https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/Y43636TH4D6T46IC6N2RQVJTRFJAAYGA
reference_id
reference_type
scores
0
value 9.8
scoring_system cvssv3.1
scoring_elements CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
1
value CRITICAL
scoring_system generic_textual
scoring_elements
url https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/Y43636TH4D6T46IC6N2RQVJTRFJAAYGA
8
reference_url https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/Y43636TH4D6T46IC6N2RQVJTRFJAAYGA/
reference_id
reference_type
scores
url https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/Y43636TH4D6T46IC6N2RQVJTRFJAAYGA/
9
reference_url https://nvd.nist.gov/vuln/detail/CVE-2019-5420
reference_id
reference_type
scores
0
value 9.8
scoring_system cvssv3.1
scoring_elements CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
1
value CRITICAL
scoring_system generic_textual
scoring_elements
url https://nvd.nist.gov/vuln/detail/CVE-2019-5420
10
reference_url https://weblog.rubyonrails.org/2019/3/13/Rails-4-2-5-1-5-1-6-2-have-been-released
reference_id
reference_type
scores
0
value 9.8
scoring_system cvssv3.1
scoring_elements CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
1
value CRITICAL
scoring_system generic_textual
scoring_elements
url https://weblog.rubyonrails.org/2019/3/13/Rails-4-2-5-1-5-1-6-2-have-been-released
11
reference_url https://weblog.rubyonrails.org/2019/3/13/Rails-4-2-5-1-5-1-6-2-have-been-released/
reference_id
reference_type
scores
url https://weblog.rubyonrails.org/2019/3/13/Rails-4-2-5-1-5-1-6-2-have-been-released/
12
reference_url https://www.exploit-db.com/exploits/46785
reference_id
reference_type
scores
0
value 9.8
scoring_system cvssv3.1
scoring_elements CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
1
value CRITICAL
scoring_system generic_textual
scoring_elements
url https://www.exploit-db.com/exploits/46785
13
reference_url https://www.exploit-db.com/exploits/46785/
reference_id
reference_type
scores
url https://www.exploit-db.com/exploits/46785/
14
reference_url https://bugzilla.redhat.com/show_bug.cgi?id=1689154
reference_id 1689154
reference_type
scores
url https://bugzilla.redhat.com/show_bug.cgi?id=1689154
15
reference_url https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=924521
reference_id 924521
reference_type
scores
url https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=924521
16
reference_url https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/linux/remote/46785.rb
reference_id CVE-2019-5420
reference_type exploit
scores
url https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/linux/remote/46785.rb
17
reference_url https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/multi/http/rails_double_tap.rb
reference_id CVE-2019-5420
reference_type exploit
scores
url https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/multi/http/rails_double_tap.rb
18
reference_url https://github.com/advisories/GHSA-m42h-mh85-4qgc
reference_id GHSA-m42h-mh85-4qgc
reference_type
scores
0
value CRITICAL
scoring_system cvssv3.1_qr
scoring_elements
url https://github.com/advisories/GHSA-m42h-mh85-4qgc
fixed_packages
0
url pkg:gem/railties@5.2.2.1
purl pkg:gem/railties@5.2.2.1
is_vulnerable false
affected_by_vulnerabilities
resource_url http://public2.vulnerablecode.io/packages/pkg:gem/railties@5.2.2.1
1
url pkg:gem/railties@6.0.0
purl pkg:gem/railties@6.0.0
is_vulnerable false
affected_by_vulnerabilities
resource_url http://public2.vulnerablecode.io/packages/pkg:gem/railties@6.0.0
aliases CVE-2019-5420, GHSA-m42h-mh85-4qgc
risk_score null
exploitability null
weighted_severity null
resource_url http://public2.vulnerablecode.io/vulnerabilities/VCID-bepd-668e-13h8
Fixing_vulnerabilities
Risk_scorenull
Resource_urlhttp://public2.vulnerablecode.io/packages/pkg:gem/railties@5.2.2.0