Vulnerability Monitor

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CVE-2020-14966

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.

Published

2020-06-22T12:15:10.087

Last Modified

2024-11-21T05:04:31.987

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:P/A:N

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: PARTIAL
Availability Impact: NONE

Exploitability Score

10.0

Impact Score

2.9

Weaknesses

Type: Primary
CWE-347

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	jsrsasign_project	jsrsasign	≤ 8.0.18	Yes
Application	netapp	max_data	-	Yes

References

https://github.com/kjur/jsrsasign/issues/437 Exploit, Issue Tracking, Third Party Advisory ([email protected])
https://github.com/kjur/jsrsasign/releases/tag/8.0.17 Release Notes, Third Party Advisory ([email protected])
https://github.com/kjur/jsrsasign/releases/tag/8.0.18 Release Notes, Third Party Advisory ([email protected])
https://kjur.github.io/jsrsasign/ Release Notes, Third Party Advisory ([email protected])
https://security.netapp.com/advisory/ntap-20200724-0001/ Third Party Advisory ([email protected])
https://www.npmjs.com/package/jsrsasign Product, Third Party Advisory ([email protected])
https://github.com/kjur/jsrsasign/issues/437 Exploit, Issue Tracking, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/kjur/jsrsasign/releases/tag/8.0.17 Release Notes, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/kjur/jsrsasign/releases/tag/8.0.18 Release Notes, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://kjur.github.io/jsrsasign/ Release Notes, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.netapp.com/advisory/ntap-20200724-0001/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.npmjs.com/package/jsrsasign Product, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)