CVE-2021-24998

Simple JWT Login <= 3.2.1 - Insecure Password Creation

2021-10-13 00:00

Strategic Overview

Status: Patched in 3.3.0
Affected Plugin: Simple JWT Login – Allows you to use JWT on REST endpoints.
Affected Version: < 3.3.0
CVSS: 7.5High
Weakness type: CWE-326 · Inadequate Encryption Strength
CVE: CVE-2021-24998

View all Simple JWT Login – Allows you to use JWT on REST endpoints. vulnerabilities

At a glance

CVE-2021-24998 is a high-severity Inadequate Encryption Strength vulnerability in the Simple JWT Login WordPress plugin, affecting versions < 3.3.0. It carries a CVSS score of 7.5 (reachable over the network; low attack complexity; high integrity impact). Exploitation requires no authentication. The issue is fixed in version 3.3.0; sites on affected versions should update now. Disclosed October 2021, reported by Zian Choy.

Vulnerability Overview

The Simple JWT Login WordPress plugin before 3.3.0 can be used to create new WordPress user accounts with a randomly generated password. The password is generated using the str_shuffle PHP function that "does not generate cryptographically secure values, and should not be used for cryptographic purposes" according to PHP's documentation.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user. A successful exploit has high impact on integrity.

CWE-326: Inadequate Encryption Strength

The product stores or transmits sensitive data using an encryption scheme that is theoretically sound, but is not strong enough for the level of protection required.

Remediation

Update to version 3.3.0, or a newer patched version

How does WordSec protect against this?

The fix is the thing that ends this: Simple JWT Login 3.3.0 closes this, and updating the plugin is the step that ends it.

Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2021-24998 https://www.wordfence.com/threat-intel/vulnerabilities/id/defd82dd-bda0-4f0c-88cb-4db983953097 https://nvd.nist.gov/vuln/detail/CVE-2021-24998

Related records

Other vulnerabilities in Simple JWT Login – Allows you to use JWT on REST endpoints.

CVSS Vector

7.5

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityNone
IntegrityHigh
AvailabilityNone

This record contains material that is subject to copyright

CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE®). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.

https://www.cve.org/Legal/TermsOfUse

Defiant hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute this software vulnerability information. Any copy of the software vulnerability information you make for such purposes is authorized provided that you include a hyperlink to this vulnerability record and reproduce Defiant's copyright designation and this license in any such copy.

https://www.wordfence.com/wordfence-intelligence-terms-and-conditions/