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Regular Expression Denial of Service in djvalidator

High severity GitHub Reviewed Published Feb 9, 2022 to the GitHub Advisory Database • Updated Sep 11, 2023

Package

npm djvalidator (npm)

Affected versions

<= 1.1.1

Patched versions

None

Description

All versions of package djvalidator are vulnerable to Regular Expression Denial of Service (ReDoS) by sending crafted invalid emails - for example,
--@------------------------------------------------------------------------------------------------------------------------!.

References

Published by the National Vulnerability Database Nov 26, 2020
Reviewed Apr 13, 2021
Published to the GitHub Advisory Database Feb 9, 2022
Last updated Sep 11, 2023

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(39th percentile)

Weaknesses

CVE ID

CVE-2020-7779

GHSA ID

GHSA-v6wh-2wvh-c8x5

Source code

No known source code
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