Magento up to 2.3.5-p1 Signature Verification information exposure

CVSS Meta Temp Score
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CTI Interest Score
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3.6$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Magento up to 2.3.5-p1. This vulnerability affects unknown code of the component Signature Verification Handler. Such manipulation leads to information exposure. This vulnerability is referenced as CVE-2020-9690. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Magento up to 2.3.5-p1. Affected by this issue is some unknown functionality of the component Signature Verification Handler. The manipulation with an unknown input leads to a information exposure vulnerability. Using CWE to declare the problem leads to CWE-203. The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not. Impacted is confidentiality. CVE summarizes:

Magento versions 2.3.5-p1 and earlier, and 2.3.5-p1 and earlier have an observable timing discrepancy vulnerability. Successful exploitation could lead to signature verification bypass.

The weakness was published 07/29/2020 as APSB20-47 as confirmed security bulletin (Website). The advisory is shared for download at helpx.adobe.com. This vulnerability is handled as CVE-2020-9690 since 03/02/2020. The exploitation is known to be difficult. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1592.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Similar entries are available at VDB-159142, VDB-159139 and VDB-159141. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.7
VulDB Meta Temp Score: 3.7

VulDB Base Score: 3.1
VulDB Temp Score: 3.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.2
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Information exposure
CWE: CWE-203 / CWE-200 / CWE-284
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

03/02/2020 🔍
07/29/2020 +149 days 🔍
07/30/2020 +1 days 🔍
11/06/2020 +99 days 🔍

Sourcesinfo

Advisory: APSB20-47
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2020-9690 (🔍)
GCVE (CVE): GCVE-0-2020-9690
GCVE (VulDB): GCVE-100-159140
See also: 🔍

Entryinfo

Created: 07/30/2020 08:24
Updated: 11/06/2020 13:31
Changes: 07/30/2020 08:24 (39), 07/30/2020 08:29 (17), 11/06/2020 13:31 (1)
Complete: 🔍
Cache ID: 216::103

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