parser-server up to 4.0.x Regex SQL Query improper authorization

CVSS Meta Temp Score
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CTI Interest Score
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6.1$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in parser-server up to 4.0.x. The impacted element is an unknown function of the component Regex Handler. Such manipulation as part of SQL Query leads to improper authorization. This vulnerability is uniquely identified as CVE-2020-5251. The attack can be launched remotely. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in parser-server up to 4.0.x and classified as problematic. Affected by this issue is an unknown functionality of the component Regex Handler. The manipulation as part of a SQL Query leads to a improper authorization vulnerability. Using CWE to declare the problem leads to CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. Impacted is confidentiality. CVE summarizes:

In parser-server before version 4.1.0, you can fetch all the users objects, by using regex in the NoSQL query. Using the NoSQL, you can use a regex on sessionToken and find valid accounts this way.

The weakness was disclosed 03/04/2020 (GitHub Repository). The advisory is shared for download at github.com. This vulnerability is handled as CVE-2020-5251 since 01/02/2020. The exploitation is known to be difficult. The attack may be launched remotely. The successful exploitation needs a simple authentication. 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 T1548.002.

Upgrading to version 4.1.0 eliminates this vulnerability.

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Productinfo

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.1
VulDB Meta Temp Score: 6.1

VulDB Base Score: 3.0
VulDB Temp Score: 2.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.7
NVD Vector: 🔍

CNA Base Score: 7.7
CNA Vector (GitHub, 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: Improper authorization
CWE: CWE-285 / CWE-266
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: parser-server 4.1.0
Patch: github.com

Timelineinfo

01/02/2020 🔍
03/04/2020 +62 days 🔍
03/05/2020 +1 days 🔍
05/11/2025 +1893 days 🔍

Sourcesinfo

Advisory: 3a3a5eee5ffa48da1352423312cb767de14de269
Status: Confirmed

CVE: CVE-2020-5251 (🔍)
GCVE (CVE): GCVE-0-2020-5251
GCVE (VulDB): GCVE-100-150872

Entryinfo

Created: 03/05/2020 08:25
Updated: 05/11/2025 17:00
Changes: 03/05/2020 08:25 (39), 03/05/2020 08:30 (11), 04/09/2024 14:34 (18), 04/09/2024 14:36 (19), 05/11/2025 17:00 (8)
Complete: 🔍
Cache ID: 216::103

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