// For flags

CVE-2022-24999

express: "qs" prototype poisoning causes the hang of the node process

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

qs before 6.10.3, as used in Express before 4.17.3 and other products, allows attackers to cause a Node process hang for an Express application because an __ proto__ key can be used. In many typical Express use cases, an unauthenticated remote attacker can place the attack payload in the query string of the URL that is used to visit the application, such as a[__proto__]=b&a[__proto__]&a[length]=100000000. The fix was backported to qs 6.9.7, 6.8.3, 6.7.3, 6.6.1, 6.5.3, 6.4.1, 6.3.3, and 6.2.4 (and therefore Express 4.17.3, which has "deps: qs@6.9.7" in its release description, is not vulnerable).

qs anterior a 6.10.3, como se usa en Express anterior a 4.17.3 y otros productos, permite a los atacantes provocar que un proceso de Nodo se cuelgue para una aplicación Express porque se puede usar una clave __ proto__. En muchos casos de uso típicos de Express, un atacante remoto no autenticado puede colocar el payload del ataque en la cadena de consulta de la URL que se utiliza para visitar la aplicación, como a[__proto__]=b&a[__proto__]&a[length] =100000000. La solución se respaldó a qs 6.9.7, 6.8.3, 6.7.3, 6.6.1, 6.5.3, 6.4.1, 6.3.3 y 6.2.4 (y por lo tanto a Express 4.17.3, que tiene "deps : qs@6.9.7" en la descripción de su versión, no es vulnerable).

A flaw was found in the express.js npm package of nodejs:14 module stream. Express.js Express is vulnerable to a denial of service caused by a prototype pollution flaw in qs. By adding or modifying properties of Object.prototype using a __proto__ or constructor payload, a remote attacker can cause a denial of service.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2022-02-14 CVE Reserved
  • 2022-11-26 CVE Published
  • 2024-07-17 EPSS Updated
  • 2024-08-03 CVE Updated
  • 2024-08-03 First Exploit
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Qs Project
Search vendor "Qs Project"
Qs
Search vendor "Qs Project" for product "Qs"
< 6.2.4
Search vendor "Qs Project" for product "Qs" and version " < 6.2.4"
node.js
Affected
Qs Project
Search vendor "Qs Project"
Qs
Search vendor "Qs Project" for product "Qs"
>= 6.3.0 < 6.3.3
Search vendor "Qs Project" for product "Qs" and version " >= 6.3.0 < 6.3.3"
node.js
Affected
Qs Project
Search vendor "Qs Project"
Qs
Search vendor "Qs Project" for product "Qs"
>= 6.5.0 < 6.5.3
Search vendor "Qs Project" for product "Qs" and version " >= 6.5.0 < 6.5.3"
node.js
Affected
Qs Project
Search vendor "Qs Project"
Qs
Search vendor "Qs Project" for product "Qs"
>= 6.7.0 < 6.7.3
Search vendor "Qs Project" for product "Qs" and version " >= 6.7.0 < 6.7.3"
node.js
Affected
Qs Project
Search vendor "Qs Project"
Qs
Search vendor "Qs Project" for product "Qs"
>= 6.8.0 < 6.8.3
Search vendor "Qs Project" for product "Qs" and version " >= 6.8.0 < 6.8.3"
node.js
Affected
Qs Project
Search vendor "Qs Project"
Qs
Search vendor "Qs Project" for product "Qs"
>= 6.9.0 < 6.9.7
Search vendor "Qs Project" for product "Qs" and version " >= 6.9.0 < 6.9.7"
node.js
Affected
Qs Project
Search vendor "Qs Project"
Qs
Search vendor "Qs Project" for product "Qs"
>= 6.10.0 < 6.10.3
Search vendor "Qs Project" for product "Qs" and version " >= 6.10.0 < 6.10.3"
node.js
Affected
Qs Project
Search vendor "Qs Project"
Qs
Search vendor "Qs Project" for product "Qs"
6.4.0
Search vendor "Qs Project" for product "Qs" and version "6.4.0"
node.js
Affected
Qs Project
Search vendor "Qs Project"
Qs
Search vendor "Qs Project" for product "Qs"
6.6.0
Search vendor "Qs Project" for product "Qs" and version "6.6.0"
node.js
Affected
Openjsf
Search vendor "Openjsf"
Express
Search vendor "Openjsf" for product "Express"
< 4.17.3
Search vendor "Openjsf" for product "Express" and version " < 4.17.3"
node.js
Affected
Debian
Search vendor "Debian"
Debian Linux
Search vendor "Debian" for product "Debian Linux"
10.0
Search vendor "Debian" for product "Debian Linux" and version "10.0"
-
Affected