CVE-2020-14966

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.

Weakness classification

• CWE-347: Improper Verification of Cryptographic Signature

Primary references

• cve@mitre.org — Exploit, Issue Tracking, Third Party Advisory
• cve@mitre.org — Release Notes, Third Party Advisory
• cve@mitre.org — Release Notes, Third Party Advisory
• cve@mitre.org — Release Notes, Third Party Advisory
• cve@mitre.org — Third Party Advisory
• cve@mitre.org — Product, Third Party Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Exploit, Issue Tracking, Third Party Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Release Notes, Third Party Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Release Notes, Third Party Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Release Notes, Third Party Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Product, Third Party Advisory