CVE-2019-18817 Istio vulnerable to denial of service
Attackers can cause a denial of service in Istio due to a timeout configuration issue in listener filters.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2019-18817?
CVE-2019-18817 is a high-severity denial of service vulnerability in n/a, published on 12 Nov 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Istio 1.3.x before 1.3.5 allows Denial of Service because continue_on_listener_filters_timeout is set to True, a related issue to CVE-2019-18836.
Weakness: CWE-835
Which versions are affected by CVE-2019-18817?
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 1.3.0 | 1.3.5 |
istio.io/istio Go | From 1.3.0 | 1.3.5 |
Products include Istio Istio.
How do I fix CVE-2019-18817?
Upgrade istio.io/istio to 1.3.5 or later.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2019-18817 being exploited?
There is no known exploitation of CVE-2019-18817 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-vc7h-cmp3-4hw5.