Vulnerability Monitor

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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.

Published

2020-01-02T15:15:11.960

Last Modified

2024-11-21T04:27:30.923

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 9.1 (CRITICAL)

CVSSv2 Vector

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

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

Exploitability Score

10.0

Impact Score

4.9

Weaknesses

Type: Secondary
CWE-347
Type: Primary
CWE-347

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	python-ecdsa_project	python-ecdsa	< 0.13.3	Yes
Application	redhat	ceph_storage	2.0	Yes
Application	redhat	ceph_storage	3.0	Yes
Application	redhat	openstack	10	Yes
Application	redhat	openstack	13	Yes
Application	redhat	openstack	14	Yes
Application	redhat	openstack	15	Yes
Application	redhat	virtualization	4.0	Yes

References

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14859 Exploit, Issue Tracking, Patch, Third Party Advisory ([email protected])
https://github.com/warner/python-ecdsa/issues/114 Exploit, Third Party Advisory ([email protected])
https://github.com/warner/python-ecdsa/releases/tag/python-ecdsa-0.13.3 Release Notes, Third Party Advisory ([email protected])
https://pypi.org/project/ecdsa/0.13.3/ Release Notes, Third Party Advisory ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14859 Exploit, Issue Tracking, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/warner/python-ecdsa/issues/114 Exploit, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/warner/python-ecdsa/releases/tag/python-ecdsa-0.13.3 Release Notes, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://pypi.org/project/ecdsa/0.13.3/ Release Notes, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)