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CVE-2022-29225— Zip bomb vulnerability in Envoy

Quick assessment

Affected
envoyproxy envoy
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Envoy是一款开源的分布式代理服务器。 Envoy 1.22.1 之前的版本存在安全漏洞，该漏洞源于secompressors 在覆盖 decode/encodeBody 中的主体之前将解压缩的数据累积到中间缓冲区中，攻击者利用该漏洞耗尽系统内存并导致拒绝服务。

CVSS 7.5 · High EPSS 1.54% · P73
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I. Basic Information for CVE-2022-29225

Vulnerability Information
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Vulnerability Title
Zip bomb vulnerability in Envoy
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
Vulnerability Title
Envoy 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Envoy是一款开源的分布式代理服务器。 Envoy 1.22.1 之前的版本存在安全漏洞，该漏洞源于secompressors 在覆盖 decode/encodeBody 中的主体之前将解压缩的数据累积到中间缓冲区中，攻击者利用该漏洞耗尽系统内存并导致拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
envoyproxy envoy < 1.22.1 -

II. Public POCs for CVE-2022-29225

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III. Intelligence Information for CVE-2022-29225

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Patches & Fixes for CVE-2022-29225 (1)

Vendor Advisories for CVE-2022-29225 (1)

Same Patch Batch · envoyproxy · 2022-06-09 · 5 CVEs total

CVE-2022-29226 10.0 CRITICAL Trivial authentication bypass in Envoy
CVE-2022-29227 7.5 HIGH Use after free in Envoy
CVE-2022-29228 7.5 HIGH Reachable assertion in Envoy
CVE-2022-29224 5.9 MEDIUM Segmentation fault leading to crash in Envoy

IV. Related Vulnerabilities

Same product: envoy
Same vendor: envoyproxy
Same weakness: CWE-400

V. Comments for CVE-2022-29225

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