CVE-2019-12243 Istio may not check inbound TCP connections against istio-policy
Attackers can bypass access controls in Istio service mesh, potentially accessing unauthorized resources or services.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2019-12243?
CVE-2019-12243 is a high-severity missing authorization vulnerability in n/a, published on 5 Jun 2019. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Istio 1.1.x through 1.1.6 has Incorrect Access Control.
Which versions are affected by CVE-2019-12243?
2 open source packages ship an affected version, including istio.io/istio. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
istio.io/istio Go | From 1.1.0 | 1.1.7 |
istio.io/istio Go | From 1.1.0 | 1.1.7 |
Products include Istio Istio.
How do I fix CVE-2019-12243?
Upgrade istio.io/istio to 1.1.7 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2019-12243 being exploited?
There is no known exploitation of CVE-2019-12243 in the wild and no public exploit code.
Other vulnerabilities in n/a
- CVE-2021-31921 Missing authorization in n/a
- CVE-2021-34824 Information disclosure in n/a
- CVE-2026-31837 Istio JWKS resolver to prevent private key material from being exposed when JWKS fetch fails.
- CVE-2021-39155 Authorization Policy Bypass Due to Case Insensitive Host Comparison
- CVE-2021-39156 Fragments in Path May Lead to Authorization Policy Bypass
Sources
Also known as GHSA-6g5f-f5pm-mjrg.