Vulnerability · Published Jun 9, 2022 · Assigned by GitHub_M

CVE-2022-29225Zip bomb vulnerability in Envoy

High 7.5

In plain English

A high-severity uncontrolled resource consumption in envoy from envoyproxy. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.6% (higher than 76% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)1.6%top 24.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
envoyproxy	envoy	< 1.22.1

Weakness: CWE-400, CWE-409 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

https://github.com/envoyproxy/envoy/security/advisories/GHSA-75hv-2jjj-89hh x_refsource_CONFIRM
https://github.com/envoyproxy/envoy/commit/cb4ef0b09200c720dfdb07e097092dd105450343 x_refsource_MISC