Vulnerability Monitor

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CVE-2020-14967

An issue was discovered in the jsrsasign package before 8.0.18 for Node.js. Its RSA PKCS1 v1.5 decryption implementation does not detect ciphertext modification by prepending '\0' bytes to ciphertexts (it decrypts modified ciphertexts without error). An attacker might prepend these bytes with the goal of triggering memory corruption issues.

Security Impact Summary

This vulnerability carries a CRITICAL severity rating with a CVSS v3.1 score of 9.8, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 2 products from jsrsasign_project, from netapp organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2020, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.

Published

2020-06-22T12:15:10.150

Last Modified

2024-11-21T05:04:32.150

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 9.8 (CRITICAL)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:P/I:P/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

6.4

Weaknesses

Type: Primary
CWE-119

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	jsrsasign_project	jsrsasign	< 8.0.18	Yes
Application	netapp	max_data	-	Yes

References

https://github.com/kjur/jsrsasign/issues/439 Exploit, Issue Tracking, Third Party Advisory ([email protected])
https://github.com/kjur/jsrsasign/releases/tag/8.0.17 Release Notes, Third Party Advisory ([email protected])
https://github.com/kjur/jsrsasign/releases/tag/8.0.18 Release Notes, Third Party Advisory ([email protected])
https://kjur.github.io/jsrsasign/ Release Notes, Third Party Advisory ([email protected])
https://security.netapp.com/advisory/ntap-20200724-0001/ Third Party Advisory ([email protected])
https://www.npmjs.com/package/jsrsasign Product, Third Party Advisory ([email protected])
https://github.com/kjur/jsrsasign/issues/439 Exploit, Issue Tracking, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/kjur/jsrsasign/releases/tag/8.0.17 Release Notes, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/kjur/jsrsasign/releases/tag/8.0.18 Release Notes, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://kjur.github.io/jsrsasign/ Release Notes, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.netapp.com/advisory/ntap-20200724-0001/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.npmjs.com/package/jsrsasign Product, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For jsrsasign_project's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.