Out-of-bounds Read in Istio
CVE-2022-31045
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.0 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H.
EPSS exploit prediction
EPSS: 0.012 (66.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 66.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.011 · newest: 0.012 · change: +0.001
Affected products
- Istio — versions >= 1.13.0, < 1.13.5, < 1.12.18, >= 1.14.0, < 1.14.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/istio/istio/security/advisories/GHSA-xwx5-5c9g-x68x (Third Party Advisory)
- istio.io/latest/news/security/istio-security-2022-05 (Broken Link)
Frequently asked questions
- What is CVE-2022-31045?
- CVE-2022-31045 is a high-severity vulnerability in Istio, classified under Out-of-bounds Read. CVSS score: 7.0/10. Published 2022-06-09.
- How severe is CVE-2022-31045?
- High severity. CVSS v3 base score is 7.0 out of 10.
- Is CVE-2022-31045 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.