CVE-2020-14966

Public Exploit

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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.21%
Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.io Third-Party Advisory netapp.com Third-Party Advisory npmjs.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://kjur.github.io/jsrsasign/ third party advisory release notes
https://www.npmjs.com/package/jsrsasign product third party advisory
https://github.com/kjur/jsrsasign/issues/437 third party advisory issue tracking exploit
https://github.com/kjur/jsrsasign/releases/tag/8.0.18 third party advisory release notes
https://github.com/kjur/jsrsasign/releases/tag/8.0.17 third party advisory release notes
https://security.netapp.com/advisory/ntap-20200724-0001/ third party advisory

Frequently Asked Questions

What is the severity of CVE-2020-14966?
CVE-2020-14966 has been scored as a high severity vulnerability.
How to fix CVE-2020-14966?
To fix CVE-2020-14966, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-14966 being actively exploited in the wild?
It is possible that CVE-2020-14966 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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