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Fencer Intel
high 7.0

CVE-2022-31045 json

Ill-formed headers may lead to unexpected behavior in Istio

published 4y ago modified last mo. also GHSA-xwx5-5c9g-x68x , EUVD-2022-6197

cvss
7.0
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.2%
EPSS 1.2% chance of exploitation in 30 days, percentile 68%
public exploits
0
none known

Summary

Istio is an open platform to connect, manage, and secure microservices. In affected versions ill-formed headers sent to Envoy in certain configurations can lead to unexpected memory access resulting in undefined behavior or crashing. Users are most likely at risk if they have an Istio ingress Gateway exposed to external traffic. This vulnerability has been resolved in versions 1.12.8, 1.13.5, and 1.14.1. Users are advised to upgrade. There are no known workarounds for this issue.

Patch / fix

  • go istio.io/istio 1.12.18, 1.13.5, 1.14.1
  • istio istio 1.12.8, 1.13.5
  • 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-2022:5004

Is CVE-2022-31045 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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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-2022-31045 updated cvss 9.8

Istio: Unsafe memory access in metadata exchange.

  • Red Hat OpenShift Service Mesh 2.0 servicemesh, servicemesh-mixc, servicemesh-mixs, servicemesh-istioctl, servicemesh-pilot-agent, servicemesh-pilot-discovery
    affected: no fix available
  • Red Hat OpenShift Service Mesh 2.1 servicemesh 2.1.3-1.el8, servicemesh-cni 2.1.3-1.el8, servicemesh-pilot-agent 2.1.3-1.el8, servicemesh-pilot-discovery 2.1.3-1.el8
    fixed: vendor fix RHSA-2022:5004
  • Red Hat OpenShift Service Mesh 2.1 servicemesh-proxy 2.1.3-1.el8, servicemesh-operator 2.1.3-2.el8, servicemesh-ratelimit 2.1.3-1.el8, servicemesh-proxy-wasm 2.1.3-1.el8, servicemesh-prometheus 2.23.0-7.el8
    not affected: vulnerable code not present

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
none
Automatable
no
Technical impact
partial
Assessed
last yr.

Exploit prediction

1.19% chance of exploitation in the next 30 days, higher than 68% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 7.0 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P
GitHub 3.1 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
go istio.io/istio
<1.12.18
>=1.13.0, <1.13.5
>=1.14.0, <1.14.1
1.12.18
1.13.5
1.14.1

Affected products

  • istio istio

Classification

Weakness

References

Sources

Fencer Intel 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.