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Fencer Vulns
high 7.5

CVE-2022-29225 json

Zip bomb vulnerability in Envoy

published 2022-06-09 4 y ago modified 2026-09-08 2 mo ago also BIT-envoy-2022-29225 , EUVD-2022-33587 , GHSA-75hv-2jjj-89hh

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.6%
EPSS 1.6% chance of exploitation in 30 days, percentile 76%
public exploits
0
none known

Summary

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.

Patch / fix

  • bitnami envoy 1.22.1
  • envoyproxy envoy 1.22.1
  • servicemesh service mesh 2.1 2.1.3-1.el8
  • servicemesh-cni service mesh 2.1 2.1.3-1.el8
  • servicemesh-proxy service mesh 2.1 2.1.3-1.el8
  • servicemesh-operator service mesh 2.1 2.1.3-2.el8
  • servicemesh-ratelimit service mesh 2.1 2.1.3-1.el8
  • servicemesh-prometheus service mesh 2.1 2.23.0-7.el8
  • servicemesh-proxy-wasm service mesh 2.1 2.1.3-1.el8
  • servicemesh-pilot-agent service mesh 2.1 2.1.3-1.el8

red hat advisories RHSA-2022:5004RHSA-2022:5003

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2022-29225 updated cvss 7.5

envoy: Decompressors can be zip bombed

  • Red Hat OpenShift Service Mesh 2.0 servicemesh-proxy 2.0.10-1.el8
    fixed: vendor fix “This can be mitigated by disabling decompression in Envoy.” RHSA-2022:5003
  • Red Hat OpenShift Service Mesh 2.1 servicemesh-proxy 2.1.3-1.el8, servicemesh-proxy-wasm 2.1.3-1.el8
    fixed: vendor fix “This can be mitigated by disabling decompression in Envoy.” RHSA-2022:5004
  • Red Hat OpenShift Service Mesh 2.0 servicemesh 2.0.10-1.el8, servicemesh-cni 2.0.10-1.el8, servicemesh-mixc 2.0.10-1.el8, servicemesh-mixs 2.0.10-1.el8, servicemesh-istioctl 2.0.10-1.el8, servicemesh-operator 2.0.10-1.el8, +3 more Red Hat OpenShift Service Mesh 2.1 servicemesh 2.1.3-1.el8, servicemesh-cni 2.1.3-1.el8, servicemesh-operator 2.1.3-2.el8, servicemesh-ratelimit 2.1.3-1.el8, servicemesh-pilot-agent 2.1.3-1.el8, servicemesh-prometheus 2.23.0-7.el8, +1 more
    not affected: vulnerable code not present “This can be mitigated by disabling decompression in Envoy.”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
partial
Assessed
18 mo ago

Exploit prediction

1.61% chance of exploitation in the next 30 days, higher than 76% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/envoyproxy/envoy/security/advisories/GHSA-75hv-2jjj-89hh referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P
OSV 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
bitnami envoy
<1.22.1
1.22.1

Affected products

  • envoyproxy envoy

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption
  • CWE-409 Improper Handling of Highly Compressed Data (Data Amplification)

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.