CVE Vulnerability

CVE-2018-12556

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.

4.3 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8.6 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

Scope

5.9 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.2 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
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
Configurations

Configuration 1

cpe:2.3:a:yarnpkg:website:*:*:*:*:*:*:*:*
Information

Published : 2019-05-16 05:29

Updated : 2019-05-21 02:03

NVD link : CVE-2018-12556

Mitre link : CVE-2018-12556

Products Affected
No products.
CWE
CWE-347

Improper Verification of Cryptographic Signature