Versions of the package jsrsasign from 7.0.0 and before 11.1.1 are vulnerable to Incomplete Comparison with Missing Factors via the getRandomBigIntegerZeroToMax and getRandomBigIntegerMinToMax functions in src/crypto-1.1.js; an attacker can recover the private key by exploiting the incorrect compareTo checks that accept out-of-range candidates and thus bias DSA nonces during signature generation.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
None
No disruption
CVSS Vector v4.0
Weakness Type (CWE)
Vulnerable Products 1
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Jsrsasign_Project Jsrsasign
cpe:2.3:a:jsrsasign_project:jsrsasign:*:*:*:*:*:node.js:*:*
|
7.0.0
|
11.1.1
|
References 4
https://gist.github.com/Kr0emer/081681818b51605c91945126d74b4f20
report@snyk.io
https://github.com/kjur/jsrsasign/commit/ee4b013478366cb16cea9a4bdfb218b6077f83…
report@snyk.io
https://github.com/kjur/jsrsasign/pull/647
report@snyk.io
https://security.snyk.io/vuln/SNYK-JS-JSRSASIGN-15370939
report@snyk.io