CVE-2020-14968
Last modified
CVE-2020-14968 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. An issue was discovered in the jsrsasign package before 8.0.17 for Node.js. Its RSASSA-PSS (RSA-PSS) implementation does not detect signature manipulation/modification by prepending '\0' bytes to a signature (it accepts these modified signatures as valid). EPSS estimates a 2.93% chance of exploitation in the next 30 days.
Description
An issue was discovered in the jsrsasign package before 8.0.17 for Node.js. Its RSASSA-PSS (RSA-PSS) implementation does not detect signature manipulation/modification by prepending '\0' bytes to a signature (it accepts these modified signatures as valid). An attacker can abuse this behavior in an application by creating multiple valid signatures where only one signature should exist. Also, an attacker might prepend these bytes with the goal of triggering memory corruption issues.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Kjur | Jsrsasign | < 8.0.17 |
| Netapp | Max Data | All versions |
References
- https://github.com/kjur/jsrsasign/issues/438Exploit, Issue Tracking, Third Party Advisory
- https://github.com/kjur/jsrsasign/releases/tag/8.0.17Release Notes, Third Party Advisory
- https://github.com/kjur/jsrsasign/releases/tag/8.0.18Release Notes, Third Party Advisory
- https://kjur.github.io/jsrsasign/Release Notes, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20200724-0001/Third Party Advisory
- https://www.npmjs.com/package/jsrsasignProduct, Third Party Advisory
- https://github.com/kjur/jsrsasign/issues/438Exploit, Issue Tracking, Third Party Advisory
- https://github.com/kjur/jsrsasign/releases/tag/8.0.17Release Notes, Third Party Advisory
- https://github.com/kjur/jsrsasign/releases/tag/8.0.18Release Notes, Third Party Advisory
- https://kjur.github.io/jsrsasign/Release Notes, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20200724-0001/Third Party Advisory
- https://www.npmjs.com/package/jsrsasignProduct, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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