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<button id=search-close title='Cancel search' type=reset aria-label='Cancel search'><svg class="icon menu-close"><use xlink:href="/v1.16/img/icons.svg#menu-close"/></svg></button></form></nav></header><div class=banner-container></div><main class="primary blog-content"><div><article><h1>Security Bulletins</h1><p class=blog-description>Disclosed security vulnerabilities and their mitigation.</p><div class=security-grid><table><thead><tr><th>Disclosure</th><th>Date</th><th>Affected Releases</th><th>Impact Score</th><th>Related</th></tr></thead><tbody><tr><td style=white-space:nowrap><a href=/v1.16/news/security/istio-security-2022-008/>ISTIO-SECURITY-2022-008</a></td><td>November 9, 2022</td><td>1.15.2<br></td><td class=score><a href="https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=CVSS%3a3.1%2fAV%3aA%2fAC%3aL%2fPR%3aL%2fUI%3aN%2fS%3aC%2fC%3aH%2fI%3aL%2fA%3aN">7.6</a></td><td>Identity impersonation if user has localhost access</td></tr><tr><td style=white-space:nowrap><a href=/v1.16/news/security/istio-security-2022-007/>ISTIO-SECURITY-2022-007</a></td><td>October 12, 2022</td><td>All releases prior to 1.13<br>1.13.0 to 1.13.8<br>1.14.0 to 1.14.4<br>1.15.0 to 1.15.1<br></td><td class=score><a href="https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=CVSS%3a3.1%2fAV%3aN%2fAC%3aL%2fPR%3aN%2fUI%3aN%2fS%3aU%2fC%3aN%2fI%3aN%2fA%3aH">7.5</a></td><td>Denial of service attack due to Go Regex Library</td></tr><tr><td style=white-space:nowrap><a href=/v1.16/news/security/istio-security-2022-006/>ISTIO-SECURITY-2022-006</a></td><td>July 26, 2022</td><td>1.13.6<br>1.14.2<br></td><td class=score><a href="https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=CVSS%3a3.1%2fAV%3aN%2fAC%3aH%2fPR%3aN%2fUI%3aN%2fS%3aU%2fC%3aN%2fI%3aN%2fA%3aH">5.9</a></td><td>Ill-formed headers sent to Envoy in certain configurations can lead to unexpected memory access resulting in undefined behavior or crashing</td></tr><tr><td style=white-space:nowrap><a href=/v1.16/news/security/istio-security-2022-005/>ISTIO-SECURITY-2022-005</a></td><td>June 9, 2022</td><td>All releases prior to 1.12.0<br>1.12.0 to 1.12.7<br>1.13.0 to 1.13.4<br>1.14.0<br></td><td class=score><a href="https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=CVSS%3a3.1%2fAV%3aN%2fAC%3aL%2fPR%3aN%2fUI%3aN%2fS%3aU%2fC%3aN%2fI%3aN%2fA%3aH">7.5</a></td><td>Ill-formed headers sent to Envoy in certain configurations can lead to unexpected memory access resulting in undefined behavior or crashing</td></tr><tr><td style=white-space:nowrap><a href=/v1.16/news/security/istio-security-2022-004/>ISTIO-SECURITY-2022-004</a></td><td>March 9, 2022</td><td>All releases prior to 1.11.0<br>1.11.0 to 1.11.7<br>1.12.0 to 1.12.4<br>1.13.0 to 1.13.1<br></td><td class=score><a href="https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=CVSS%3a3.1%2fAV%3aN%2fAC%3aL%2fPR%3aN%2fUI%3aN%2fS%3aU%2fC%3aN%2fI%3aN%2fA%3aH">7.5</a></td><td>Unauthenticated control plane denial of service attack due to stack exhaustion</td></tr><tr><td style=white-space:nowrap><a href=/v1.16/news/security/istio-security-2022-003/>ISTIO-SECURITY-2022-003</a></td><td>February 22, 2022</td><td>All releases prior to 1.11.0<br>1.11.0 to 1.11.6<br>1.12.0 to 1.12.3<br>1.13.0<br></td><td class=score><a href="https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=CVSS%3a3.1%2fAV%3aN%2fAC%3aL%2fPR%3aN%2fUI%3aN%2fS%3aU%2fC%3aN%2fI%3aN%2fA%3aH">7.5</a></td><td>Multiple CVEs related to istiod Denial of Service and Envoy</td></tr><tr><td style=white-space:nowrap><a href=/v1.16/news/security/istio-security-2022-001/>ISTIO-SECURITY-2022-001</a></td><td>January 18, 2022</td><td>1.12.0 to 1.12.1<br></td><td class=score><a href="https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=AV%3aN%2fAC%3aH%2fPR%3aN%2fUI%3aR%2fS%3aU%2fC%3aH%2fI%3aH%2fA%3aN">6.8</a></td><td>Authorization Policy For Host Rules During Upgrades</td></tr><tr><td style=white-space:nowrap><a href=/v1.16/news/security/istio-security-2022-002/>ISTIO-SECURITY-2022-002</a></td><td>January 18, 2022</td><td>1.12.0 to 1.12.1<br></td><td class=score><a href="https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=AV%3aN%2fAC%3aL%2fPR%3aH%2fUI%3aN%2fS%3aU%2fC%3aL%2fI%3aL%2fA%3aL">4.7</a></td><td>Privileged Escalation in Kubernetes Gateway API</td></tr><tr><td style=white-space:nowrap><a href=/v1.16/news/security/istio-security-2021-008/>ISTIO-SECURITY-2021-008</a></td><td>August 24, 2021</td><td>All releases prior to 1.9.8<br>1.10.0 to 1.10.3<br>1.11.0<br></td><td class=score><a href="https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=AV%3aL%2fAC%3aL%2fPR%3aN%2fUI%3aR%2fS%3aC%2fC%3aH%2fI%3aH%2fA%3aH">8.6</a></td><td>Multiple CVEs related to AuthorizationPolicy, EnvoyFilter and Envoy</td></tr><tr><td style=white-space:nowrap><a href=/v1.16/news/security/istio-security-2021-007/>ISTIO-SECURITY-2021-007</a></td><td>June 24, 2021</td><td>All 1.8 patch releases<br>1.9.0 to 1.9.5<br>1.10.0 to 1.10.1<br></td><td class=score><a href="https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=AV%3aN%2fAC%3aL%2fPR%3aL%2fUI%3aN%2fS%3aC%2fC%3aH%2fI%3aL%2fA%3aL">9.1</a></td><td>Istio contains a remotely exploitable vulnerability where credentials specified in the Gateway and DestinationRule credentialName field can be accessed from different namespaces</td></tr><tr><td style=white-space:nowrap><a href=/v1.16/news/security/istio-security-2021-005/>ISTIO-SECURITY-2021-005</a></td><td>May 11, 2021</td><td>All releases prior to 1.8.6<br>1.9.0 to 1.9.4<br></td><td class=score><a href="https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=AV%3aN%2fAC%3aL%2fPR%3aL%2fUI%3aN%2fS%3aU%2fC%3aH%2fI%3aH%2fA%3aN">8.1</a></td><td>HTTP request paths with multiple slashes or escaped slash characters may bypass path based authorization rules</td></tr><tr><td style=white-space:nowrap><a href=/v1.16/news/security/istio-security-2021-006/>ISTIO-SECURITY-2021-006</a></td><td>May 11, 2021</td><td>All releases prior to 1.8.6<br>1.9.0 to 1.9.4<br></td><td class=score><a href="https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=AV%3aN%2fAC%3aL%2fPR%3aN%2fUI%3aN%2fS%3aC%2fC%3aH%2fI%3aH%2fA%3aH">10</a></td><td>An external client can access unexpected services in the cluster, bypassing authorization checks, when a gateway is configured with AUTO_PASSTHROUGH routing configuration</td></tr><tr><td style=white-space:nowrap><a href=/v1.16/news/security/istio-security-2021-003/>ISTIO-SECURITY-2021-003</a></td><td>April 15, 2021</td><td>All releases prior to 1.8.5<br>1.9.0 to 1.9.2<br></td><td class=score><a href="https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=AV%3aN%2fAC%3aL%2fPR%3aN%2fUI%3aN%2fS%3aU%2fC%3aN%2fI%3aN%2fA%3aH">7.5</a></td><td></td></tr><tr><td style=white-space:nowrap><a href=/v1.16/news/security/istio-security-2021-004/>ISTIO-SECURITY-2021-004</a></td><td>April 15, 2021</td><td>All releases 1.5 and later<br></td><td class=score><a href="https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=">N/A</a></td><td>Potential misuse of mTLS-only fields in AuthorizationPolicy with plain text traffic</td></tr><tr><td style=white-space:nowrap><a href=/v1.16/news/security/istio-security-2021-002/>ISTIO-SECURITY-2021-002</a></td><td>April 7, 2021</td><td>All releases 1.6 and later<br></td><td class=score><a href="https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=">N/A</a></td><td>Upgrades from older Istio versions can affect access control to an ingress gateway due to a change of container ports</td></tr><tr><td style=white-space:nowrap><a href=/v1.16/news/security/istio-security-2021-001/>ISTIO-SECURITY-2021-001</a></td><td>March 1, 2021</td><td>1.9.0<br></td><td class=score><a href="https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=AV%3aN%2fAC%3aL%2fPR%3aN%2fUI%3aN%2fS%3aU%2fC%3aH%2fI%3aL%2fA%3aN">8.2</a></td><td>JWT authentication can be bypassed when AuthorizationPolicy is misused</td></tr><tr><td style=white-space:nowrap><a href=/v1.16/news/security/istio-security-2020-011/>ISTIO-SECURITY-2020-011</a></td><td>November 21, 2020</td><td>1.8.0<br></td><td class=score><a href="https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=">N/A</a></td><td>Envoy incorrectly restores the proxy protocol downstream address for non-HTTP connections</td></tr><tr><td style=white-space:nowrap><a href=/v1.16/news/security/istio-security-2020-010/>ISTIO-SECURITY-2020-010</a></td><td>September 29, 2020</td><td>1.6 to 1.6.10<br>1.7 to 1.7.2<br></td><td class=score><a href="https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=AV%3aN%2fAC%3aL%2fPR%3aN%2fUI%3aN%2fS%3aC%2fC%3aL%2fI%3aL%2fA%3aL">8.3</a></td><td></td></tr><tr><td style=white-space:nowrap><a href=/v1.16/news/security/istio-security-2020-009/>ISTIO-SECURITY-2020-009</a></td><td>August 11, 2020</td><td>1.5 to 1.5.8<br>1.6 to 1.6.7<br></td><td class=score><a href="https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=AV%3aN%2fAC%3aH%2fPR%3aL%2fUI%3aN%2fS%3aU%2fC%3aH%2fI%3aH%2fA%3aN">6.8</a></td><td>Incorrect Envoy configuration for wildcard suffixes used for Principals/Namespaces in Authorization Policies for TCP Services</td></tr><tr><td style=white-space:nowrap><a href=/v1.16/news/security/istio-security-2020-008/>ISTIO-SECURITY-2020-008</a></td><td>July 9, 2020</td><td>1.5 to 1.5.7<br>1.6 to 1.6.4<br>All releases prior to 1.5<br></td><td class=score><a href="https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=AV%3aN%2fAC%3aH%2fPR%3aH%2fUI%3aN%2fS%3aC%2fC%3aH%2fI%3aL%2fA%3aN%2fE%3aF%2fRL%3aO%2fRC%3aC">6.6</a></td><td>Incorrect validation of wildcard DNS Subject Alternative Names</td></tr><tr><td style=white-space:nowrap><a href=/v1.16/news/security/istio-security-2020-007/>ISTIO-SECURITY-2020-007</a></td><td>June 30, 2020</td><td>1.5 to 1.5.6<br>1.6 to 1.6.3<br></td><td class=score><a href="https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=AV%3aN%2fAC%3aL%2fPR%3aN%2fUI%3aN%2fS%3aU%2fC%3aN%2fI%3aN%2fA%3aH">7.5</a></td><td>Multiple denial of service vulnerabilities in Envoy</td></tr><tr><td style=white-space:nowrap><a href=/v1.16/news/security/istio-security-2020-006/>ISTIO-SECURITY-2020-006</a></td><td>June 11, 2020</td><td>1.4 to 1.4.9<br>1.5 to 1.5.4<br>1.6 to 1.6.1<br></td><td class=score><a href="https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=AV%3aN%2fAC%3aL%2fPR%3aN%2fUI%3aN%2fS%3aU%2fC%3aN%2fI%3aN%2fA%3aH">7.5</a></td><td>Denial of service in the HTTP2 library used by Envoy</td></tr><tr><td style=white-space:nowrap><a href=/v1.16/news/security/istio-security-2020-005/>ISTIO-SECURITY-2020-005</a></td><td>May 12, 2020</td><td>1.4 to 1.4.8<br>1.5 to 1.5.3<br></td><td class=score><a href="https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=AV%3aN%2fAC%3aL%2fPR%3aN%2fUI%3aN%2fS%3aU%2fC%3aN%2fI%3aN%2fA%3aH">7.5</a></td><td>Denial of service affecting telemetry v2</td></tr><tr><td style=white-space:nowrap><a href=/v1.16/news/security/istio-security-2020-004/>ISTIO-SECURITY-2020-004</a></td><td>March 25, 2020</td><td>1.4 to 1.4.6<br>1.5<br></td><td class=score><a href="https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=AV%3aA%2fAC%3aL%2fPR%3aL%2fUI%3aN%2fS%3aC%2fC%3aH%2fI%3aH%2fA%3aN">8.7</a></td><td>Default Kiali security configuration allows full control of mesh</td></tr><tr><td style=white-space:nowrap><a href=/v1.16/news/security/istio-security-2020-003/>ISTIO-SECURITY-2020-003</a></td><td>March 3, 2020</td><td>1.4 to 1.4.5<br></td><td class=score><a href="https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=">7.5</a></td><td>Two uncontrolled resource consumption and two incorrect access control vulnerabilities in Envoy</td></tr><tr><td style=white-space:nowrap><a href=/v1.16/news/security/istio-security-2020-001/>ISTIO-SECURITY-2020-001</a></td><td>February 11, 2020</td><td>1.3 to 1.3.7<br>1.4 to 1.4.3<br></td><td class=score><a href="https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=AV%3aN%2fAC%3aH%2fPR%3aN%2fUI%3aN%2fS%3aC%2fC%3aH%2fI%3aH%2fA%3aH">9.0</a></td><td>Authentication Policy bypass</td></tr><tr><td style=white-space:nowrap><a href=/v1.16/news/security/istio-security-2020-002/>ISTIO-SECURITY-2020-002</a></td><td>February 11, 2020</td><td>1.3 to 1.3.6<br></td><td class=score><a href="https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=AV%3aN%2fAC%3aH%2fPR%3aN%2fUI%3aN%2fS%3aU%2fC%3aH%2fI%3aH%2fA%3aN">7.4</a></td><td>Mixer policy check bypass caused by improperly accepting certain request headers</td></tr><tr><td style=white-space:nowrap><a href=/v1.16/news/security/istio-security-2019-007/>ISTIO-SECURITY-2019-007</a></td><td>December 10, 2019</td><td>1.2 to 1.2.9<br>1.3 to 1.3.5<br>1.4 to 1.4.1<br></td><td class=score><a href="https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=CVSS%3a3.0%2fAV%3aN%2fAC%3aH%2fPR%3aN%2fUI%3aN%2fS%3aC%2fC%3aH%2fI%3aH%2fA%3aH">9.0</a></td><td>Heap overflow and improper input validation in Envoy</td></tr><tr><td style=white-space:nowrap><a href=/v1.16/news/security/istio-security-2019-006/>ISTIO-SECURITY-2019-006</a></td><td>November 7, 2019</td><td>1.3 to 1.3.4<br></td><td class=score><a href="https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=CVSS%3a3.1%2fAV%3aN%2fAC%3aL%2fPR%3aN%2fUI%3aN%2fS%3aU%2fC%3aN%2fI%3aN%2fA%3aH%2fE%3aH%2fRL%3aO%2fRC%3aC">7.5</a></td><td>Denial of service</td></tr><tr><td style=white-space:nowrap><a href=/v1.16/news/security/istio-security-2019-005/>ISTIO-SECURITY-2019-005</a></td><td>October 8, 2019</td><td>1.1 to 1.1.15<br>1.2 to 1.2.6<br>1.3 to 1.3.1<br></td><td class=score><a href="https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=CVSS%3a3.0%2fAV%3aN%2fAC%3aL%2fPR%3aN%2fUI%3aN%2fS%3aU%2fC%3aN%2fI%3aN%2fA%3aH">7.5</a></td><td>Denial of service caused by the presence of numerous HTTP headers in client requests</td></tr><tr><td style=white-space:nowrap><a href=/v1.16/news/security/incorrect-sidecar-image-1.2.4/>Istio 1.2.4 sidecar image vulnerability</a></td><td>September 10, 2019</td><td>1.2 to 1.2.4<br></td><td class=score></td><td>An erroneous 1.2.4 sidecar image was available due to a faulty release operation</td></tr><tr><td style=white-space:nowrap><a href=/v1.16/news/security/istio-security-2019-003/>ISTIO-SECURITY-2019-003</a></td><td>August 13, 2019</td><td>1.1 to 1.1.12<br>1.2 to 1.2.3<br></td><td class=score><a href="https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=CVSS%3a3.0%2fAV%3aN%2fAC%3aL%2fPR%3aN%2fUI%3aN%2fS%3aU%2fC%3aN%2fI%3aN%2fA%3aH">7.5</a></td><td>Denial of service in regular expression parsing</td></tr><tr><td style=white-space:nowrap><a href=/v1.16/news/security/istio-security-2019-004/>ISTIO-SECURITY-2019-004</a></td><td>August 13, 2019</td><td>1.1 to 1.1.12<br>1.2 to 1.2.3<br></td><td class=score><a href="https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=CVSS%3a3.0%2fAV%3aN%2fAC%3aL%2fPR%3aN%2fUI%3aN%2fS%3aU%2fC%3aN%2fI%3aN%2fA%3aH">7.5</a></td><td>Multiple denial of service vulnerabilities related to HTTP2 support in Envoy</td></tr><tr><td style=white-space:nowrap><a href=/v1.16/news/security/istio-security-2019-002/>ISTIO-SECURITY-2019-002</a></td><td>June 28, 2019</td><td>1.0 to 1.0.8<br>1.1 to 1.1.9<br>1.2 to 1.2.1<br></td><td class=score><a href="https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=CVSS%3a3.0%2fAV%3aN%2fAC%3aL%2fPR%3aN%2fUI%3aN%2fS%3aU%2fC%3aN%2fI%3aN%2fA%3aH%2fE%3aF%2fRL%3aO%2fRC%3aC">7.5</a></td><td>Denial of service affecting JWT access token parsing</td></tr><tr><td style=white-space:nowrap><a href=/v1.16/news/security/istio-security-2019-001/>ISTIO-SECURITY-2019-001</a></td><td>May 28, 2019</td><td>1.1 to 1.1.6<br></td><td class=score><a href="https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=CVSS%3a3.0%2fAV%3aA%2fAC%3aL%2fPR%3aN%2fUI%3aN%2fS%3aC%2fC%3aH%2fI%3aH%2fA%3aN%2fE%3aH%2fRL%3aO%2fRC%3aC">8.9</a></td><td>Incorrect access control</td></tr></tbody></table></div></article></div></main><footer class=footer><div class="footer-wrapper container-l"><div class="user-links footer-links"><a class=channel title='GitHub is where development takes place on Istio code' href=https://github.com/istio/community aria-label=GitHub><svg class="icon github"><use xlink:href="/v1.16/img/icons.svg#github"/></svg></a><a class=channel title="Access our team drive if you'd like to take a look at the Istio technical design documents" href=https://groups.google.com/forum/#!forum/istio-team-drive-access aria-label="team drive"><svg class="icon drive"><use 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