Buffer overflow in Jsrsasign Project
CVE-2020-14967
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.023 (82.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 82.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.026 · newest: 0.023 · change: -0.003
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/releases/tag/8.0.18 (Third Party Advisory, Release Notes)
- github.com/kjur/jsrsasign/releases/tag/8.0.17 (Third Party Advisory, Release Notes)
- github.com/kjur/jsrsasign/issues/439 (Exploit, Third Party Advisory, Issue Tracking)
- security.netapp.com/advisory/ntap-20200724-0001/ (Third Party Advisory)
Frequently asked questions
- What is CVE-2020-14967?
- CVE-2020-14967 is a critical-severity vulnerability in Jsrsasign Project, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2020-06-22.
- How severe is CVE-2020-14967?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2020-14967 known to be exploited?
- 20 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.