Vulnerability CVE-2019-14853
Published: 2019-11-26   Modified: 2019-11-29

Description:
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.

Type:

CWE-755

CVSS2 => (AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
Python-ecdsa project -> Python-ecdsa 

 References:
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14853
https://github.com/warner/python-ecdsa/releases/tag/python-ecdsa-0.13.3
https://seclists.org/bugtraq/2019/Dec/33
https://www.debian.org/security/2019/dsa-4588
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