CVE-2019-14859

Public Exploit

Description

A flaw was found in all python-ecdsa versions before 0.13.3, where it did not correctly verify whether signatures used DER encoding. Without this verification, a malformed signature could be accepted, making the signature malleable. Without proper verification, an attacker could use a malleable signature to create false transactions.

Category

9.1
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.10%
Third-Party Advisory redhat.com Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory pypi.org
Affected: Red Hat python-ecdsa
Published at:
Updated at:

References

Link Tags
https://github.com/warner/python-ecdsa/releases/tag/python-ecdsa-0.13.3 third party advisory release notes
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14859 patch exploit third party advisory issue tracking
https://pypi.org/project/ecdsa/0.13.3/ third party advisory release notes
https://github.com/warner/python-ecdsa/issues/114 third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2019-14859?
CVE-2019-14859 has been scored as a critical severity vulnerability.
How to fix CVE-2019-14859?
To fix CVE-2019-14859, 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-2019-14859 being actively exploited in the wild?
It is possible that CVE-2019-14859 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.
What software or system is affected by CVE-2019-14859?
CVE-2019-14859 affects Red Hat python-ecdsa.
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