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CVE-2024-23322— Envoy crashes when idle and request per try timeout occur within the backoff interval

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是一款开源的分布式代理服务器。 Envoy 1.29.1之前版本存在资源管理错误漏洞，该漏洞源于当某些超时发生在同一时间间隔内时会发生拒绝服务。

CVSS 7.5 · High EPSS 0.68% · P51

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking
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I. Basic Information for CVE-2024-23322

Vulnerability Information
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Vulnerability Title
Envoy crashes when idle and request per try timeout occur within the backoff interval
Source: CVE Program / CVE List V5
Vulnerability Description
Envoy is a high-performance edge/middle/service proxy. Envoy will crash when certain timeouts happen within the same interval. The crash occurs when the following are true: 1. hedge_on_per_try_timeout is enabled, 2. per_try_idle_timeout is enabled (it can only be done in configuration), 3. per-try-timeout is enabled, either through headers or configuration and its value is equal, or within the backoff interval of the per_try_idle_timeout. This issue has been addressed in released 1.29.1, 1.28.1, 1.27.3, and 1.26.7. 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:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
释放后使用
Source: CVE Program / CVE List V5
Vulnerability Title
Envoy 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Envoy是一款开源的分布式代理服务器。 Envoy 1.29.1之前版本存在资源管理错误漏洞，该漏洞源于当某些超时发生在同一时间间隔内时会发生拒绝服务。
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, < 1.29.1 -

II. Public POCs for CVE-2024-23322

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III. Intelligence Information for CVE-2024-23322

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Patches & Fixes for CVE-2024-23322 (1)

Vendor Advisories for CVE-2024-23322 (1)

Same Patch Batch · envoyproxy · 2024-02-09 · 5 CVEs total

CVE-2024-23324 8.6 HIGH Envoy ext auth can be bypassed when Proxy protocol filter sets invalid UTF-8 metadata
CVE-2024-23325 7.5 HIGH Envoy crashes when using an address type that isn’t supported by the OS
CVE-2024-23327 7.5 HIGH Crash in proxy protocol when command type of LOCAL in Envoy
CVE-2024-23323 4.3 MEDIUM Excessive CPU usage when URI template matcher is configured using regex in Envoy

IV. Related Vulnerabilities

Same product: envoy
Same vendor: envoyproxy
Same weakness: CWE-416

V. Comments for CVE-2024-23322

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