// For flags

CVE-2024-45810

Envoy crashes for LocalReply in http async client

Severity Score

6.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track
*SSVC
Descriptions

Envoy is a cloud-native high-performance edge/middle/service proxy. Envoy will crash when the http async client is handling `sendLocalReply` under some circumstance, e.g., websocket upgrade, and requests mirroring. The http async client will crash during the `sendLocalReply()` in http async client, one reason is http async client is duplicating the status code, another one is the destroy of router is called at the destructor of the async stream, while the stream is deferred deleted at first. There will be problems that the stream decoder is destroyed but its reference is called in `router.onDestroy()`, causing segment fault. This will impact ext_authz if the `upgrade` and `connection` header are allowed, and request mirrorring. This issue has been addressed in versions 1.31.2, 1.30.6, 1.29.9, and 1.28.7. Users are advised to upgrade. There are no known workarounds for this vulnerability.

A flaw was found in Envoy. Envoy will crash when the http async client is handling `sendLocalReply` under some circumstances, such as websocket upgrade and requests mirroring. The http async client will crash during the `sendLocalReply()` in http async client if the http async client is duplicating the status code or if the destruction of the router is called at the destructor of the async stream while the stream is deferred or deleted. This issue occurs when the stream decoder is destroyed but it's reference is called in `router.onDestroy()`, causing a segment fault. This will impact ext_authz if the `upgrade` and `connection` header are allowed.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
* Common Vulnerability Scoring System
SSVC
  • Decision:Track
Exploitation
None
Automatable
No
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2024-09-09 CVE Reserved
  • 2024-09-19 CVE Published
  • 2024-09-20 CVE Updated
  • 2024-09-25 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Envoyproxy
Search vendor "Envoyproxy"
 Envoy
Search vendor "Envoyproxy" for product "Envoy"
 < 1.28.7
Search vendor "Envoyproxy" for product "Envoy" and version " < 1.28.7"
en
Affected
Envoyproxy
Search vendor "Envoyproxy"
 Envoy
Search vendor "Envoyproxy" for product "Envoy"
 >= 1.29.0 < 1.29.9
Search vendor "Envoyproxy" for product "Envoy" and version " >= 1.29.0 < 1.29.9"
en
Affected
Envoyproxy
Search vendor "Envoyproxy"
 Envoy
Search vendor "Envoyproxy" for product "Envoy"
 >= 1.30.0 < 1.30.6
Search vendor "Envoyproxy" for product "Envoy" and version " >= 1.30.0 < 1.30.6"
en
Affected
Envoyproxy
Search vendor "Envoyproxy"
 Envoy
Search vendor "Envoyproxy" for product "Envoy"
 1.31.2
Search vendor "Envoyproxy" for product "Envoy" and version "1.31.2"
en
Affected