// For flags

CVE-2022-29225

Zip bomb vulnerability in Envoy

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

Envoy is a cloud-native high-performance proxy. In versions prior to 1.22.1 secompressors accumulate decompressed data into an intermediate buffer before overwriting the body in the decode/encodeBody. This may allow an attacker to zip bomb the decompressor by sending a small highly compressed payload. Maliciously constructed zip files may exhaust system memory and cause a denial of service. Users are advised to upgrade. Users unable to upgrade may consider disabling decompression.

Envoy es un proxy de alto rendimiento nativo de la nube. En versiones anteriores a 1.22.1, los secompresores acumulan los datos descomprimidos en un buffer intermedio antes de sobrescribir el cuerpo en el decode/encodeBody. Esto puede permitir a un atacante bombardear el descompresor mediante el envío de una pequeña carga útil altamente comprimida. Los archivos zip construidos de forma maliciosa pueden agotar la memoria del sistema y causar una denegación de servicio. Es recomendado a usuarios actualizar. Los usuarios que no puedan actualizar pueden considerar deshabilitar la descompresión

A flaw was found in Envoy. A specifically constructed HTTP body delivered by an untrusted downstream or upstream peer whose decompressed size is dramatically larger than the compressed size can be sent by an attacker to 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
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2022-04-13 CVE Reserved
  • 2022-06-09 CVE Published
  • 2023-12-31 EPSS Updated
  • 2024-08-03 CVE Updated
  • 2024-08-03 First Exploit
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-400: Uncontrolled Resource Consumption
  • CWE-409: Improper Handling of Highly Compressed Data (Data Amplification)
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Envoyproxy
Search vendor "Envoyproxy"
Envoy
Search vendor "Envoyproxy" for product "Envoy"
< 1.22.1
Search vendor "Envoyproxy" for product "Envoy" and version " < 1.22.1"
-
Affected