Search criteria
24 vulnerabilities by istio
CVE-2023-44487 (GCVE-0-2023-44487)
Vulnerability from cvelistv5 – Published: 2023-10-10 00:00 – Updated: 2025-11-04 21:08
VLAI?
Summary
The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023.
Severity ?
7.5 (High)
CWE
- n/a
Assigner
References
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CVE-2022-39388 (GCVE-0-2022-39388)
Vulnerability from cvelistv5 – Published: 2022-11-10 00:00 – Updated: 2025-04-23 16:39
VLAI?
Summary
Istio is an open platform to connect, manage, and secure microservices. In versions on the 1.15.x branch prior to 1.15.3, a user can impersonate any workload identity within the service mesh if they have localhost access to the Istiod control plane. Version 1.15.3 contains a patch for this issue. There are no known workarounds.
Severity ?
7.6 (High)
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
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CVE-2022-39278 (GCVE-0-2022-39278)
Vulnerability from cvelistv5 – Published: 2022-10-13 00:00 – Updated: 2025-04-23 16:50
VLAI?
Summary
Istio is an open platform-independent service mesh that provides traffic management, policy enforcement, and telemetry collection. Prior to versions 1.15.2, 1.14.5, and 1.13.9, the Istio control plane, istiod, is vulnerable to a request processing error, allowing a malicious attacker that sends a specially crafted or oversized message which results in the control plane crashing when the Kubernetes validating or mutating webhook service is exposed publicly. This endpoint is served over TLS port 15017, but does not require any authentication from the attacker. For simple installations, Istiod is typically only reachable from within the cluster, limiting the blast radius. However, for some deployments, especially external istiod topologies, this port is exposed over the public internet. Versions 1.15.2, 1.14.5, and 1.13.9 contain patches for this issue. There are no effective workarounds, beyond upgrading. This bug is due to an error in `regexp.Compile` in Go.
Severity ?
7.5 (High)
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
Impacted products
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CVE-2022-31045 (GCVE-0-2022-31045)
Vulnerability from cvelistv5 – Published: 2022-06-09 20:55 – Updated: 2025-04-23 18:17
VLAI?
Summary
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.
Severity ?
CWE
- CWE-125 - Out-of-bounds Read
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
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CVE-2022-24726 (GCVE-0-2022-24726)
Vulnerability from cvelistv5 – Published: 2022-03-10 20:45 – Updated: 2025-04-23 18:55
VLAI?
Summary
Istio is an open platform to connect, manage, and secure microservices. In affected versions the Istio control plane, istiod, is vulnerable to a request processing error, allowing a malicious attacker that sends a specially crafted message which results in the control plane crashing when the validating webhook for a cluster is exposed publicly. This endpoint is served over TLS port 15017, but does not require any authentication from the attacker. For simple installations, Istiod is typically only reachable from within the cluster, limiting the blast radius. However, for some deployments, especially [external istiod](https://istio.io/latest/docs/setup/install/external-controlplane/) topologies, this port is exposed over the public internet. This issue has been patched in versions 1.13.2, 1.12.5 and 1.11.8. Users are advised to upgrade. Users unable to upgrade should disable access to a validating webhook that is exposed to the public internet or restrict the set of IP addresses that can query it to a set of known, trusted entities.
Severity ?
7.5 (High)
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
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CVE-2022-23635 (GCVE-0-2022-23635)
Vulnerability from cvelistv5 – Published: 2022-02-22 22:00 – Updated: 2025-04-23 19:02
VLAI?
Summary
Istio is an open platform to connect, manage, and secure microservices. In affected versions the Istio control plane, `istiod`, is vulnerable to a request processing error, allowing a malicious attacker that sends a specially crafted message which results in the control plane crashing. This endpoint is served over TLS port 15012, but does not require any authentication from the attacker. For simple installations, Istiod is typically only reachable from within the cluster, limiting the blast radius. However, for some deployments, especially [multicluster](https://istio.io/latest/docs/setup/install/multicluster/primary-remote/) topologies, this port is exposed over the public internet. There are no effective workarounds, beyond upgrading. Limiting network access to Istiod to the minimal set of clients can help lessen the scope of the vulnerability to some extent.
Severity ?
7.5 (High)
CWE
- CWE-287 - Improper Authentication
Assigner
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
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Impacted products
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CVE-2022-21701 (GCVE-0-2022-21701)
Vulnerability from cvelistv5 – Published: 2022-01-19 21:40 – Updated: 2025-04-23 19:09
VLAI?
Summary
Istio is an open platform to connect, manage, and secure microservices. In versions 1.12.0 and 1.12.1 Istio is vulnerable to a privilege escalation attack. Users who have `CREATE` permission for `gateways.gateway.networking.k8s.io` objects can escalate this privilege to create other resources that they may not have access to, such as `Pod`. This vulnerability impacts only an Alpha level feature, the Kubernetes Gateway API. This is not the same as the Istio Gateway type (gateways.networking.istio.io), which is not vulnerable. Users are advised to upgrade to resolve this issue. Users unable to upgrade should implement any of the following which will prevent this vulnerability: Remove the gateways.gateway.networking.k8s.io CustomResourceDefinition, set PILOT_ENABLE_GATEWAY_API_DEPLOYMENT_CONTROLLER=true environment variable in Istiod, or remove CREATE permissions for gateways.gateway.networking.k8s.io objects from untrusted users.
Severity ?
5 (Medium)
CWE
- CWE-863 - Incorrect Authorization
Assigner
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CVE-2022-21679 (GCVE-0-2022-21679)
Vulnerability from cvelistv5 – Published: 2022-01-19 21:35 – Updated: 2025-04-23 19:10
VLAI?
Summary
Istio is an open platform to connect, manage, and secure microservices. In Istio 1.12.0 and 1.12.1 The authorization policy with hosts and notHosts might be accidentally bypassed for ALLOW action or rejected unexpectedly for DENY action during the upgrade from 1.11 to 1.12.0/1.12.1. Istio 1.12 supports the hosts and notHosts fields in authorization policy with a new Envoy API shipped with the 1.12 data plane. A bug in the 1.12.0 and 1.12.1 incorrectly uses the new Envoy API with the 1.11 data plane. This will cause the hosts and notHosts fields to be always matched regardless of the actual value of the host header when mixing 1.12.0/1.12.1 control plane and 1.11 data plane. Users are advised to upgrade or to not mix the 1.12.0/1.12.1 control plane with 1.11 data plane if using hosts or notHosts field in authorization policy.
Severity ?
6.8 (Medium)
CWE
- CWE-670 - Always-Incorrect Control Flow Implementation
Assigner
References
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CVE-2021-39156 (GCVE-0-2021-39156)
Vulnerability from cvelistv5 – Published: 2021-08-24 22:30 – Updated: 2024-08-04 01:58
VLAI?
Summary
Istio is an open source platform for providing a uniform way to integrate microservices, manage traffic flow across microservices, enforce policies and aggregate telemetry data. Istio 1.11.0, 1.10.3 and below, and 1.9.7 and below contain a remotely exploitable vulnerability where an HTTP request with `#fragment` in the path may bypass Istio’s URI path based authorization policies. Patches are available in Istio 1.11.1, Istio 1.10.4 and Istio 1.9.8. As a work around a Lua filter may be written to normalize the path.
Severity ?
8.1 (High)
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
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CVE-2021-39155 (GCVE-0-2021-39155)
Vulnerability from cvelistv5 – Published: 2021-08-24 22:25 – Updated: 2024-08-04 01:58
VLAI?
Summary
Istio is an open source platform for providing a uniform way to integrate microservices, manage traffic flow across microservices, enforce policies and aggregate telemetry data. According to [RFC 4343](https://datatracker.ietf.org/doc/html/rfc4343), Istio authorization policy should compare the hostname in the HTTP Host header in a case insensitive way, but currently the comparison is case sensitive. The proxy will route the request hostname in a case-insensitive way which means the authorization policy could be bypassed. As an example, the user may have an authorization policy that rejects request with hostname "httpbin.foo" for some source IPs, but the attacker can bypass this by sending the request with hostname "Httpbin.Foo". Patches are available in Istio 1.11.1, Istio 1.10.4 and Istio 1.9.8. As a work around a Lua filter may be written to normalize Host header before the authorization check. This is similar to the Path normalization presented in the [Security Best Practices](https://istio.io/latest/docs/ops/best-practices/security/#case-normalization) guide.
Severity ?
8.3 (High)
CWE
- CWE-178 - Improper Handling of Case Sensitivity
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
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CVE-2021-34824 (GCVE-0-2021-34824)
Vulnerability from cvelistv5 – Published: 2021-06-29 13:30 – Updated: 2024-08-04 00:26
VLAI?
Summary
Istio (1.8.x, 1.9.0-1.9.5 and 1.10.0-1.10.1) contains a remotely exploitable vulnerability where credentials specified in the Gateway and DestinationRule credentialName field can be accessed from different namespaces.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
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CVE-2021-31921 (GCVE-0-2021-31921)
Vulnerability from cvelistv5 – Published: 2021-06-02 15:36 – Updated: 2024-08-03 23:10
VLAI?
Summary
Istio before 1.8.6 and 1.9.x before 1.9.5 contains a remotely exploitable vulnerability where an external client can access unexpected services in the cluster, bypassing authorization checks, when a gateway is configured with AUTO_PASSTHROUGH routing configuration.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
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CVE-2021-31920 (GCVE-0-2021-31920)
Vulnerability from cvelistv5 – Published: 2021-05-27 04:03 – Updated: 2024-08-03 23:10
VLAI?
Summary
Istio before 1.8.6 and 1.9.x before 1.9.5 has a remotely exploitable vulnerability where an HTTP request path with multiple slashes or escaped slash characters (%2F or %5C) could potentially bypass an Istio authorization policy when path based authorization rules are used.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | ||||
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CVE-2019-25014 (GCVE-0-2019-25014)
Vulnerability from cvelistv5 – Published: 2021-01-29 06:00 – Updated: 2024-08-05 03:00
VLAI?
Summary
A NULL pointer dereference was found in pkg/proxy/envoy/v2/debug.go getResourceVersion in Istio pilot before 1.5.0-alpha.0. If a particular HTTP GET request is made to the pilot API endpoint, it is possible to cause the Go runtime to panic (resulting in a denial of service to the istio-pilot application).
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
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CVE-2020-16844 (GCVE-0-2020-16844)
Vulnerability from cvelistv5 – Published: 2020-10-01 16:32 – Updated: 2024-08-04 13:45
VLAI?
Summary
In Istio 1.5.0 though 1.5.8 and Istio 1.6.0 through 1.6.7, when users specify an AuthorizationPolicy resource with DENY actions using wildcard suffixes (e.g. *-some-suffix) for source principals or namespace fields, callers will never be denied access, bypassing the intended policy.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
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CVE-2020-10739 (GCVE-0-2020-10739)
Vulnerability from cvelistv5 – Published: 2020-06-02 12:22 – Updated: 2024-08-04 11:14
VLAI?
Summary
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.
Severity ?
7.5 (High)
CWE
Assigner
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| istio.io | istio/envoy |
Affected:
>= 1.4.0, < 1.4.9
Affected: >= 1.5.0, < 1.5.4 |
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CVE-2020-11767 (GCVE-0-2020-11767)
Vulnerability from cvelistv5 – Published: 2020-04-15 01:05 – Updated: 2024-08-04 11:41
VLAI?
Summary
Istio through 1.5.1 and Envoy through 1.14.1 have a data-leak issue. If there is a TCP connection (negotiated with SNI over HTTPS) to *.example.com, a request for a domain concurrently configured explicitly (e.g., abc.example.com) is sent to the server(s) listening behind *.example.com. The outcome should instead be 421 Misdirected Request. Imagine a shared caching forward proxy re-using an HTTP/2 connection for a large subnet with many users. If a victim is interacting with abc.example.com, and a server (for abc.example.com) recycles the TCP connection to the forward proxy, the victim's browser may suddenly start sending sensitive data to a *.example.com server. This occurs because the forward proxy between the victim and the origin server reuses connections (which obeys the specification), but neither Istio nor Envoy corrects this by sending a 421 error. Similarly, this behavior voids the security model browsers have put in place between domains.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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CVE-2020-8843 (GCVE-0-2020-8843)
Vulnerability from cvelistv5 – Published: 2020-02-14 18:45 – Updated: 2024-08-04 10:12
VLAI?
Summary
An issue was discovered in Istio 1.3 through 1.3.6. Under certain circumstances, it is possible to bypass a specifically configured Mixer policy. Istio-proxy accepts the x-istio-attributes header at ingress that can be used to affect policy decisions when Mixer policy selectively applies to a source equal to ingress. To exploit this vulnerability, someone has to encode a source.uid in this header. This feature is disabled by default in Istio 1.3 and 1.4.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
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CVE-2020-8595 (GCVE-0-2020-8595)
Vulnerability from cvelistv5 – Published: 2020-02-12 14:10 – Updated: 2024-08-04 10:03
VLAI?
Summary
Istio versions 1.2.10 (End of Life) and prior, 1.3 through 1.3.7, and 1.4 through 1.4.3 allows authentication bypass. The Authentication Policy exact-path matching logic can allow unauthorized access to HTTP paths even if they are configured to be only accessed after presenting a valid JWT token. For example, an attacker can add a ? or # character to a URI that would otherwise satisfy an exact-path match.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | |||||||||||||||||||
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|
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CVE-2019-18817 (GCVE-0-2019-18817)
Vulnerability from cvelistv5 – Published: 2019-11-12 14:01 – Updated: 2024-08-05 02:02
VLAI?
Summary
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.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
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CVE-2019-18836 (GCVE-0-2019-18836)
Vulnerability from cvelistv5 – Published: 2019-11-11 00:17 – Updated: 2024-08-05 02:02
VLAI?
Summary
Envoy 1.12.0 allows a remote denial of service because of resource loops, as demonstrated by a single idle TCP connection being able to keep a worker thread in an infinite busy loop when continue_on_listener_filters_timeout is used."
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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CVE-2019-14993 (GCVE-0-2019-14993)
Vulnerability from cvelistv5 – Published: 2019-08-13 17:38 – Updated: 2024-08-05 00:34
VLAI?
Summary
Istio before 1.1.13 and 1.2.x before 1.2.4 mishandles regular expressions for long URIs, leading to a denial of service during use of the JWT, VirtualService, HTTPAPISpecBinding, or QuotaSpecBinding API.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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CVE-2019-12995 (GCVE-0-2019-12995)
Vulnerability from cvelistv5 – Published: 2019-06-28 09:55 – Updated: 2024-08-04 23:41
VLAI?
Summary
Istio before 1.2.2 mishandles certain access tokens, leading to "Epoch 0 terminated with an error" in Envoy. This is related to a jwt_authenticator.cc segmentation fault.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
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CVE-2019-12243 (GCVE-0-2019-12243)
Vulnerability from cvelistv5 – Published: 2019-06-05 14:41 – Updated: 2024-08-04 23:17
VLAI?
Summary
Istio 1.1.x through 1.1.6 has Incorrect Access Control.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
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