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.

INFO

Published Date :

Nov. 26, 2019, 1:15 p.m.

Last Modified :

Dec. 17, 2019, 11:15 p.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2019-14853 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Python-ecdsa_project python-ecdsa
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2019-14853.

URL Resource
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14853 Issue Tracking Third Party Advisory
https://github.com/warner/python-ecdsa/releases/tag/python-ecdsa-0.13.3 Release Notes
https://seclists.org/bugtraq/2019/Dec/33
https://www.debian.org/security/2019/dsa-4588

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2019-14853 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2019-14853 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Dec. 18, 2019

    Action Type Old Value New Value
    Added Reference https://seclists.org/bugtraq/2019/Dec/33 [No Types Assigned]
  • CVE Modified by [email protected]

    Dec. 17, 2019

    Action Type Old Value New Value
    Added Reference https://www.debian.org/security/2019/dsa-4588 [No Types Assigned]
  • Initial Analysis by [email protected]

    Dec. 12, 2019

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:N/A:P)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14853 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14853 Issue Tracking, Third Party Advisory
    Changed Reference Type https://github.com/warner/python-ecdsa/releases/tag/python-ecdsa-0.13.3 No Types Assigned https://github.com/warner/python-ecdsa/releases/tag/python-ecdsa-0.13.3 Release Notes
    Added CWE NIST CWE-755
    Added CPE Configuration OR *cpe:2.3:a:python-ecdsa_project:python-ecdsa:*:*:*:*:*:*:*:* versions up to (excluding) 0.13.3
  • CVE Modified by [email protected]

    Dec. 02, 2019

    Action Type Old Value New Value
    Changed Description An error-handling flaw was found in python-ecdsa. During signature decoding, malformed DER signatures could raise unexpected exceptions (or no exceptions at all), which could lead to a denial of service. 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.
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2019-14853 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2019-14853 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.20 }} -0.01%

score

0.56949

percentile

CVSS31 - Vulnerability Scoring System
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