Vulnerability in Jsrsasign Project
CVE-2020-14966
An issue was discovered in the jsrsasign package through 8.0.18 for Node.js. It allows a malleability in ECDSA signatures by not checking overflows in the length of a sequence and '0' characters appended or prepended to an integer. The modified signatures are verified as valid. This could have a security-relevant impact if an application relied on a single canonical signature.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.011 (64.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 65th percentile — 64.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- kjur.github.io/jsrsasign/ (Third Party Advisory, Release Notes)
- www.npmjs.com/package/jsrsasign (Product, Third Party Advisory)
- github.com/kjur/jsrsasign/issues/437 (Exploit, Third Party Advisory, Issue Tracking)
- github.com/kjur/jsrsasign/releases/tag/8.0.18 (Third Party Advisory, Release Notes)
- github.com/kjur/jsrsasign/releases/tag/8.0.17 (Third Party Advisory, Release Notes)
- security.netapp.com/advisory/ntap-20200724-0001/ (Third Party Advisory)
Frequently asked questions
- What is CVE-2020-14966?
- CVE-2020-14966 is a high-severity vulnerability in Jsrsasign Project, classified under Improper Verification of Cryptographic Signature. CVSS score: 7.5/10. Published 2020-06-22.
- How severe is CVE-2020-14966?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2020-14966 known to be exploited?
- 19 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.