Vulnerability · Published Jun 22, 2020 · Assigned by mitre
CVE-2020-14967
Critical 9.8
In plain English
A critical-severity security flaw in the jsrsasign package (npm). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.3% (higher than 83% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)9.8Critical
Exploit odds (30 days)2.3%top 16.9% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
An issue was discovered in the jsrsasign package before 8.0.18 for Node.js. Its RSA PKCS1 v1.5 decryption implementation does not detect ciphertext modification by prepending '\0' bytes to ciphertexts (it decrypts modified ciphertexts without error). An attacker might prepend these bytes with the goal of triggering memory corruption issues.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | jsrsasign | 8.0.18 | GHSA-xxxq-chmp-67g4 |
Affected products (as reported)
References
- https://kjur.github.io/jsrsasign/ x_refsource_MISC
- https://www.npmjs.com/package/jsrsasign x_refsource_MISC
- https://github.com/kjur/jsrsasign/releases/tag/8.0.18 x_refsource_MISC
- https://github.com/kjur/jsrsasign/releases/tag/8.0.17 x_refsource_MISC
- https://github.com/kjur/jsrsasign/issues/439 x_refsource_MISC
- https://security.netapp.com/advisory/ntap-20200724-0001/ x_refsource_CONFIRM