CVE & CISA-KEV Catalog

CVE-2019-14853

HIGHEPSS 83th pctl
7.5
CVSS v3
NVD

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.

CWE-391CWE-755

How to fix

Remediation Available
python-ecdsaDebian
Fixed in:0.13.3-1CVE-2019-14853
Fixed in:0.13.3-1CVE-2019-14853
Fixed in:0.13.3-1CVE-2019-14853
Fixed in:0.13.3-1CVE-2019-14853
python-ecdsaUbuntu
Fixed in:0.13-2ubuntu0.16.04.1USN-4196-1
Fixed in:0.13-2ubuntu0.18.04.1USN-4196-1
python3-ecdsaUbuntu
Fixed in:0.13-2ubuntu0.16.04.1USN-4196-1
Fixed in:0.13-2ubuntu0.18.04.1USN-4196-1

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Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityNone
IntegrityNone
AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

2.50%probability of exploitation in 30 days
83rdpercentile

Elevated risk: more likely to be exploited than 83% of all known CVEs.

References

Third-Party Advisory1
Release Notes1
Other references2

Related Vulnerabilities

Other CWE-391 vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2024-52316Critical9.86.3%-Fix
CVE-2017-12179Critical9.84.4%-Fix
CVE-2017-12177Critical9.84.4%-Fix
CVE-2017-12186Critical9.84.3%-Fix
CVE-2017-12183Critical9.84.2%-Fix
CVE-2017-12182Critical9.84.2%-Fix

Common questions

How do I fix CVE-2019-14853?

Published advisories record a fix for 3 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Is CVE-2019-14853 being actively exploited?

Not that we know of. CVE-2019-14853 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 2.5% is the estimated probability that it will be exploited in the next 30 days. That is higher than 83% of all scored CVEs.

How severe is CVE-2019-14853?

CVE-2019-14853 has a CVSS v3 base score of 7.5, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2019-14853 affect?

Published advisories record a fix for python-ecdsa (Debian), python-ecdsa (Ubuntu), python3-ecdsa (Ubuntu). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.