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Ill-formed headers may lead to unexpected behavior in Istio

Moderate severity GitHub Reviewed Published Jun 9, 2022 in istio/istio • Updated Jan 27, 2023

Package

gomod istio.io/istio (Go)

Affected versions

< 1.12.18
>= 1.13.0, < 1.13.5
>= 1.14.0, < 1.14.1

Patched versions

1.12.18
1.13.5
1.14.1

Description

Impact

Ill-formed headers sent to Envoy in certain configurations can lead to unexpected memory access resulting in undefined behavior or crashing.

You are at most risk if you have an Istio ingress Gateway exposed to external traffic.

Patches

1.12.8, 1.13.5, 1.14.1

Workarounds

No.

References

More details can be found in the Istio Security Bulletin

For more information

If you have any questions or comments about this advisory, please email us at [email protected]

References

@howardjohn howardjohn published to istio/istio Jun 9, 2022
Published by the National Vulnerability Database Jun 9, 2022
Published to the GitHub Advisory Database Jun 10, 2022
Reviewed Jun 10, 2022
Last updated Jan 27, 2023

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS score

0.278%
(69th percentile)

Weaknesses

CVE ID

CVE-2022-31045

GHSA ID

GHSA-xwx5-5c9g-x68x

Source code

Credits

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