Vulnerability · Published Jun 9, 2022 · Assigned by GitHub_M

CVE-2022-31045Ill-formed headers may lead to unexpected behavior in Istio

High 7.0

In plain English

A high-severity out-of-bounds read in istio from istio. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.2% (higher than 68% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.0High

Exploit odds (30 days)1.2%top 31.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Go	istio.io/istio	1.12.18	GHSA-xwx5-5c9g-x68x
Go	istio.io/istio	1.13.5	GHSA-xwx5-5c9g-x68x
Go	istio.io/istio	1.14.1	GHSA-xwx5-5c9g-x68x

Affected products (as reported)

Vendor	Product	Versions
istio	istio	< 1.12.18>= 1.13.0, < 1.13.5>= 1.14.0, < 1.14.1

Weakness: CWE-125 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H

References

https://github.com/istio/istio/security/advisories/GHSA-xwx5-5c9g-x68x x_refsource_CONFIRM
https://istio.io/latest/news/security/istio-security-2022-05 x_refsource_MISC