CVE-2019-14859

CRITICAL
9.1
CVSS Score
Published: January 2, 2020 at 02:15 PM UTC
Updated: June 17, 2026 at 02:19 AM UTC
4 products affected across 2 vendorsOpenStackVirtualizationCeph Storage

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Severity
CRITICAL9.1
Exploit prediction
EPSS 2%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 0.13.3
Affected range stops below 0.13.3, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (4)

x_refsource_CONFIRMExploitIssue TrackingPatchThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14859
x_refsource_MISCExploitThird Party Advisory
https://github.com/warner/python-ecdsa/issues/114
x_refsource_MISCRelease NotesThird Party Advisory
https://pypi.org/project/ecdsa/0.13.3/

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-347

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