CVE-2018-12556

CVSS V2 Medium 4.3 CVSS V3 Medium 5.9
Description
The signature verification routine in install.sh in yarnpkg/website through 2018-06-05 only verifies that the yarn release is signed by any (arbitrary) key in the local keyring of the user, and does not pin the signature to the yarn release key, which allows remote attackers to sign tampered yarn release packages with their own key.
Overview
  • CVE ID
  • CVE-2018-12556
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2019-05-16T17:29:00
  • Last Modified Date
  • 2019-05-21T14:03:11
Weakness Enumerations
CWE URL
CWE-347 http://cwe.mitre.org/data/definitions/347.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:yarnpkg:website:*:*:*:*:*:*:*:* 1 OR 2018-06-05
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:M/Au:N/C:N/I:P/A:N
  • Access Vector
  • NETWORK
  • Access Compatibility
  • MEDIUM
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • PARTIAL
  • Availability Impact
  • NONE
  • Base Score
  • 4.3
  • Severity
  • MEDIUM
  • Exploitability Score
  • 8.6
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.0
  • Vector String
  • CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • HIGH
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • NONE
  • Base Score
  • 5.9
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 2.2
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://www.openwall.com/lists/oss-security/2019/04/30/4 Mailing List Third Party Advisory
https://github.com/yarnpkg/website/commits/master Third Party Advisory
https://github.com/RUB-NDS/Johnny-You-Are-Fired/blob/master/paper/johnny-fired.pdf Third Party Advisory
https://github.com/RUB-NDS/Johnny-You-Are-Fired Third Party Advisory
http://seclists.org/fulldisclosure/2019/Apr/38 Mailing List Third Party Advisory
http://packetstormsecurity.com/files/152703/Johnny-You-Are-Fired.html VDB Entry Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2018-12556
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-12556
History
Created Old Value New Value Data Type Notes
2022-05-10 07:51:56 Added to TrackCVE
2022-12-03 20:46:41 2019-05-16T17:29Z 2019-05-16T17:29:00 CVE Published Date updated
2022-12-03 20:46:41 2019-05-21T14:03:11 CVE Modified Date updated
2022-12-03 20:46:41 Analyzed Vulnerability Status updated