CVE-2020-10739: istio NULL Pointer Dereference
Vulnerability summary
CVE-2020-10739 is a high (CVSS 7.5) NULL Pointer Dereference vulnerability in istio. EPSS estimates a 2.39% chance of exploitation in the next 30 days, higher than 83.7% of scored vulnerabilities.
Timeline
- 02-06-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · Red hatEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVDNIST7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
2.39%
Chance of exploitation in the next 30 days
Percentile
84%
Versus all other CVEs
30-day change
+0.06 pp
From 2.33% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Istio1 product
- istio≥ 1.4.0, < 1.4.9 | ≥ 1.5.0, < 1.5.4
Istio.io1 product
- istio/envoy≥ 1.4.0, < 1.4.9 | ≥ 1.5.0, < 1.5.4
Redhat1 product
- servicemesh-proxy< 0:1.1.2-2.el8
3 vendors · 3 products
References
10 links- bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10739X Refsource CONFIRMBroken LinkIssue TrackingThird Party Advisory
- github.com/istio/envoy/commit/8788a3cf255b647fd14e6b5e2585abaaedb28153X Refsource MISCPatchThird Party Advisory
