High severity · published Nov 26, 2019
CVE-2019-14853
An error-handling flaw was found in python-ecdsa before version 0.13.3
7.5
CVSS
2.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.4% · higher than 84% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PY
Python-ecdsa · Python-ecdsa Project
before 0.13.3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-14853
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-14853
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14853
Release Notes
https://github.com/warner/python-ecdsa/releases/tag/python-ecdsa-0.13.3
seclists.org
https://seclists.org/bugtraq/2019/Dec/33
www.debian.org
https://www.debian.org/security/2019/dsa-4588
More from Python-ecdsa
9.1
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