python-ecdsa up to 0.13.2 DER Encoding signature verification

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.7$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in python-ecdsa up to 0.13.2. This issue affects some unknown processing of the component DER Encoding Handler. The manipulation results in signature verification. This vulnerability was named CVE-2019-14859. The attack may be performed from remote. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in python-ecdsa up to 0.13.2 (Programming Language Software). It has been classified as critical. Affected is an unknown function of the component DER Encoding Handler. The manipulation with an unknown input leads to a signature verification vulnerability. CWE is classifying the issue as CWE-347. The product does not verify, or incorrectly verifies, the cryptographic signature for data. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

A flaw was found in all python-ecdsa versions before 0.13.3, where it did not correctly verify whether signatures used DER encoding. Without this verification, a malformed signature could be accepted, making the signature malleable. Without proper verification, an attacker could use a malleable signature to create false transactions.

The weakness was presented 01/02/2020 as not defined bug report (Bugzilla). The advisory is available at bugzilla.redhat.com. This vulnerability is traded as CVE-2019-14859 since 08/10/2019. The exploitability is told to be difficult. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available.

Upgrading to version 0.13.3 eliminates this vulnerability.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.7

VulDB Base Score: 5.6
VulDB Temp Score: 5.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.4
NVD Vector: 🔍

CNA Base Score: 7.4
CNA Vector (Red Hat, Inc.): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Signature verification
CWE: CWE-347 / CWE-345
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: python-ecdsa 0.13.3

Timelineinfo

08/10/2019 🔍
01/02/2020 +145 days 🔍
01/02/2020 +0 days 🔍
03/19/2024 +1538 days 🔍

Sourcesinfo

Advisory: 114
Status: Not defined

CVE: CVE-2019-14859 (🔍)
GCVE (CVE): GCVE-0-2019-14859
GCVE (VulDB): GCVE-100-148218

Entryinfo

Created: 01/02/2020 19:57
Updated: 03/19/2024 08:57
Changes: 01/02/2020 19:57 (40), 01/02/2020 20:02 (12), 03/19/2024 08:53 (18), 03/19/2024 08:57 (19)
Complete: 🔍
Cache ID: 216:391:103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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