CVE-2019-14859

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.

CVSS v3.0 9.1 CRITICAL
CVSS v2.0 6.4 MEDIUM

9.1^/10

CVSS v3.0 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

6.4^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 10.0 / Impact : 4.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14859	Exploit Issue Tracking Patch Third Party Advisory
https://github.com/warner/python-ecdsa/releases/tag/python-ecdsa-0.13.3	Release Notes Third Party Advisory
https://github.com/warner/python-ecdsa/issues/114	Exploit Third Party Advisory
https://pypi.org/project/ecdsa/0.13.3/	Release Notes Third Party Advisory

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Configurations

Configuration 1 (hide)

cpe:2.3:a:python-ecdsa_project:python-ecdsa:*:*:*:*:*:*:*:*

Configuration 2 (hide)

OR	cpe:2.3:a:redhat:ceph_storage:2.0:::::::*
	cpe:2.3:a:redhat:ceph_storage:3.0:::::::*

Configuration 3 (hide)

OR	cpe:2.3:a:redhat:openstack:10:::::::*
	cpe:2.3:a:redhat:openstack:13:::::::*
	cpe:2.3:a:redhat:openstack:14:::::::*
	cpe:2.3:a:redhat:openstack:15:::::::*

Configuration 4 (hide)

cpe:2.3:a:redhat:virtualization:4.0:*:*:*:*:*:*:*

Information

Published : 2020-01-02 07:15

Updated : 2021-08-04 10:15

NVD link : CVE-2019-14859

Mitre link : CVE-2019-14859

JSON object : View

CWE

CWE-347

Improper Verification of Cryptographic Signature

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Products Affected

redhat

virtualization
ceph_storage
openstack

python-ecdsa_project

python-ecdsa

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