CVE-2020-14966
HIGH
7.5
CVSS Score
Published: June 22, 2020 at 11:20 AM UTC
Updated: June 22, 2026 at 03:18 AM UTC
2 products affected across 2 vendorsJsrsasignMax Data
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Severity
HIGH7.5
Exploit prediction
EPSS 1%
Description
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.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.
References (6)
x_refsource_MISCExploitIssue TrackingThird Party Advisory
Source: [email protected]
https://github.com/kjur/jsrsasign/issues/437x_refsource_MISCRelease NotesThird Party Advisory
Source: [email protected]
https://github.com/kjur/jsrsasign/releases/tag/8.0.17x_refsource_MISCRelease NotesThird Party Advisory
Source: [email protected]
https://github.com/kjur/jsrsasign/releases/tag/8.0.18x_refsource_MISCRelease NotesThird Party Advisory
Source: [email protected]
https://kjur.github.io/jsrsasign/x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://security.netapp.com/advisory/ntap-20200724-0001/x_refsource_MISCProductThird Party Advisory
Source: [email protected]
https://www.npmjs.com/package/jsrsasignCVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- HIGH
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-347
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