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CVE-2021-39156

HIGH

8.1

Description

Istio is an open source platform for providing a uniform way to integrate microservices, manage traffic flow across microservices, enforce policies and aggregate telemetry data. Istio 1.11.0, 1.10.3 and below, and 1.9.7 and below contain a remotely exploitable vulnerability where an HTTP request with `#fragment` in the path may bypass Istio’s URI path based authorization policies. Patches are available in Istio 1.11.1, Istio 1.10.4 and Istio 1.9.8. As a work around a Lua filter may be written to normalize the path.

CVE Details

CVSS v3.1 Score8.1

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionREQUIRED

Published8/24/2021

Last Modified11/21/2024

Sourcenvd

Honeypot Sightings0

Affected Products

istio:istio

Weaknesses (CWE)

CWE-863CWE-706

References

https://github.com/istio/istio/security/advisories/GHSA-hqxw-mm44-gc4r(security-advisories@github.com)

https://istio.io/latest/news/security/istio-security-2021-008(security-advisories@github.com)

https://github.com/istio/istio/security/advisories/GHSA-hqxw-mm44-gc4r(af854a3a-2127-422b-91ae-364da2661108)

https://istio.io/latest/news/security/istio-security-2021-008(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

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