NULL pointer dereference in Istio
CVE-2020-10739
Istio 1.4.x before 1.4.9 and Istio 1.5.x before 1.5.4 contain the following vulnerability when telemetry v2 is enabled: by sending a specially crafted packet, an attacker could trigger a Null Pointer Exception resulting in a Denial of Service. This could be sent to the ingress gateway or a sidecar, triggering a null pointer exception which results in a denial of service. This also affects servicemesh-proxy where a null pointer exception flaw was found in servicemesh-proxy. When running Telemetry v2 (not on by default in version 1.4.x), an attacker could send a specially crafted packet to the ingress gateway or proxy sidecar, triggering a denial of service.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.023 (82.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 83rd percentile — 82.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.023 · newest: 0.023 · change: 0.000
Affected products
- Istio
- Istio.io Istio/envoy — versions >= 1.4.0, < 1.4.9, >= 1.5.0, < 1.5.4
Weakness classification (CWE)
References
- bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking, Broken Link)
- istio.io/news/security/istio-security-2020-005/ (Mitigation, Vendor Advisory)
- github.com/istio/envoy/commit/8788a3cf255b647fd14e6b5e2585abaaedb28153 (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-10739?
- CVE-2020-10739 is a high-severity vulnerability in Istio, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2020-06-02.
- How severe is CVE-2020-10739?
- High severity. CVSS v3 base score is 7.5 out of 10.