Description
Versions of the package jsrsasign before 11.1.1 are vulnerable to Incorrect Conversion between Numeric Types due to handling negative exponents in ext/jsbn2.js. An attacker can force the computation of incorrect modular inverses and break signature verification by calling modPow with a negative exponent.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | jsrsasign | < 11.1.1 | 11.1.1 |
| — | org.webjars.npm:jsrsasign | — | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| npm | jsrsasign | < 11.1.1 | 11.1.1 | GHSA-8qwj-4jxw-m8jw |
References
- https://security.snyk.io/vuln/SNYK-JS-JSRSASIGN-15371175
- https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-15812274
- https://gist.github.com/Kr0emer/7ecd2be7d17419e4677315ef3758faf5
- https://github.com/kjur/jsrsasign/pull/650
- https://github.com/kjur/jsrsasign/commit/5ea1c32bb2aa894b4bd29849839afe4f98728195