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CVE-2024-45809— Jwt filter crash in the clear route cache with remote JWKs in envoy

Quick assessment

Affected
envoyproxy envoy
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Envoy是Enphase开源的一款用于连接智能家居设备的网关程序。 Envoy 1.29之前版本存在缓冲区错误漏洞，该漏洞源于Jwt过滤器在使用远程JWK清除路由缓存时，会导致Envoy崩溃。

CVSS 5.3 · Medium EPSS 0.40% · P31
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I. Basic Information for CVE-2024-45809

Vulnerability Information
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Vulnerability Title
Jwt filter crash in the clear route cache with remote JWKs in envoy
Source: CVE Program / CVE List V5
Vulnerability Description
Envoy is a cloud-native high-performance edge/middle/service proxy. Jwt filter will lead to an Envoy crash when clear route cache with remote JWKs. In the following case: 1. remote JWKs are used, which requires async header processing; 2. clear_route_cache is enabled on the provider; 3. header operations are enabled in JWT filter, e.g. header to claims feature; 4. the routing table is configured in a way that the JWT header operations modify requests to not match any route. When these conditions are met, a crash is triggered in the upstream code due to nullptr reference conversion from route(). The root cause is the ordering of continueDecoding and clearRouteCache. This issue has been addressed in versions 1.31.2, 1.30.6, and 1.29.9. Users are advised to upgrade. There are no known workarounds for this vulnerability.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
内存缓冲区边界内操作的限制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Envoy 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Envoy是Enphase开源的一款用于连接智能家居设备的网关程序。 Envoy 1.29之前版本存在缓冲区错误漏洞，该漏洞源于Jwt过滤器在使用远程JWK清除路由缓存时，会导致Envoy崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
envoyproxy envoy >= 1.29.0, < 1.29.9 -

II. Public POCs for CVE-2024-45809

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III. Intelligence Information for CVE-2024-45809

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Vendor Advisories for CVE-2024-45809 (1)

Same Patch Batch · envoyproxy · 2024-09-19 · 5 CVEs total

CVE-2024-45807 7.5 HIGH oghttp2 crash on OnBeginHeadersForStream in envoy
CVE-2024-45810 6.5 MEDIUM Envoy crashes for LocalReply in http async client
CVE-2024-45808 6.5 MEDIUM Malicious log injection via access logs in envoy
CVE-2024-45806 6.5 MEDIUM Potential manipulate `x-envoy` headers from external sources in envoy

IV. Related Vulnerabilities

Same product: envoy
Same vendor: envoyproxy
Same weakness: CWE-119

V. Comments for CVE-2024-45809

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