PyPi: Ecdsa

CVE-2019-14853

Safety vulnerability ID: 37762

This vulnerability was reviewed by experts

The information on this page was manually curated by our Cybersecurity Intelligence Team.

Created at Nov 26, 2019 Updated at Dec 10, 2024
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Advisory

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. See CVE-2019-14853.

Affected package

ecdsa

Latest version: 0.19.0

ECDSA cryptographic signature library (pure python)

Affected versions

Fixed versions

Vulnerability changelog

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.


BUGTRAQ:20191218 [SECURITY] [DSA 4588-1] python-ecdsa security update: https://seclists.org/bugtraq/2019/Dec/33
CONFIRM:https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14853: https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14853
DEBIAN:DSA-4588: https://www.debian.org/security/2019/dsa-4588
MISC:https://github.com/warner/python-ecdsa/releases/tag/python-ecdsa-0.13.3: https://github.com/warner/python-ecdsa/releases/tag/python-ecdsa-0.13.3

Resources

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Severity Details

CVSS Base Score

HIGH 7.5

CVSS v3 Details

HIGH 7.5
Attack Vector (AV)
NETWORK
Attack Complexity (AC)
LOW
Privileges Required (PR)
NONE
User Interaction (UI)
NONE
Scope (S)
UNCHANGED
Confidentiality Impact (C)
NONE
Integrity Impact (I)
NONE
Availability Availability (A)
HIGH

CVSS v2 Details

MEDIUM 5.0
Access Vector (AV)
NETWORK
Access Complexity (AC)
LOW
Authentication (Au)
NONE
Confidentiality Impact (C)
NONE
Integrity Impact (I)
NONE
Availability Impact (A)
PARTIAL