Vulnerability Monitor

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CVE-2019-14853

An error-handling flaw was found in python-ecdsa before version 0.13.3. During signature decoding, malformed DER signatures could raise unexpected exceptions (or no exceptions at all), which could lead to a denial of service.

Published

2019-11-26T13:15:10.537

Last Modified

2024-11-21T04:27:30.117

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

CVSSv2 Vector

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

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

Exploitability Score

10.0

Impact Score

2.9

Weaknesses

Type: Secondary
CWE-391
Type: Primary
CWE-755

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	python-ecdsa_project	python-ecdsa	< 0.13.3	Yes

References

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14853 Issue Tracking, Third Party Advisory ([email protected])
https://github.com/warner/python-ecdsa/releases/tag/python-ecdsa-0.13.3 Release Notes ([email protected])
https://seclists.org/bugtraq/2019/Dec/33 ([email protected])
https://www.debian.org/security/2019/dsa-4588 ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14853 Issue Tracking, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/warner/python-ecdsa/releases/tag/python-ecdsa-0.13.3 Release Notes (af854a3a-2127-422b-91ae-364da2661108)
https://seclists.org/bugtraq/2019/Dec/33 (af854a3a-2127-422b-91ae-364da2661108)
https://www.debian.org/security/2019/dsa-4588 (af854a3a-2127-422b-91ae-364da2661108)