CVE-2023-35942
Envoy's gRPC access log crash caused by the listener draining
Severity Score
6.5
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
1
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to versions 1.27.0, 1.26.4, 1.25.9, 1.24.10, and 1.23.12, gRPC access loggers using listener's global scope can cause a `use-after-free` crash when the listener is drained. Versions 1.27.0, 1.26.4, 1.25.9, 1.24.10, and 1.23.12 have a fix for this issue. As a workaround, disable gRPC access log or stop listener update.
A flaw was found in Envoy, where gRPC access loggers using the listener's global scope can cause a use-after-free crash when the listener is drained. This issue can be triggered by a listener discovery service (LDS) update with the same gRPC access log configuration.
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2023-06-20 CVE Reserved
- 2023-07-25 CVE Published
- 2024-07-31 EPSS Updated
- 2024-08-02 CVE Updated
- 2024-08-02 First Exploit
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
- CWE-416: Use After Free
CAPEC
References (3)
| URL | Tag | Source |
|---|
| URL | Date | SRC |
|---|---|---|
| https://github.com/envoyproxy/envoy/security/advisories/GHSA-69vr-g55c-v2v4 | 2024-08-02 |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2023-35942 | 2023-09-14 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2217978 | 2023-09-14 |
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" | >= 1.23.0 < 1.23.12 Search vendor "Envoyproxy" for product "Envoy" and version " >= 1.23.0 < 1.23.12" | - |
Affected
| ||||||
| Envoyproxy Search vendor "Envoyproxy" | Envoy Search vendor "Envoyproxy" for product "Envoy" | >= 1.24.0 < 1.24.10 Search vendor "Envoyproxy" for product "Envoy" and version " >= 1.24.0 < 1.24.10" | - |
Affected
| ||||||
| Envoyproxy Search vendor "Envoyproxy" | Envoy Search vendor "Envoyproxy" for product "Envoy" | >= 1.25.0 < 1.25.9 Search vendor "Envoyproxy" for product "Envoy" and version " >= 1.25.0 < 1.25.9" | - |
Affected
| ||||||
| Envoyproxy Search vendor "Envoyproxy" | Envoy Search vendor "Envoyproxy" for product "Envoy" | >= 1.26.0 < 1.26.4 Search vendor "Envoyproxy" for product "Envoy" and version " >= 1.26.0 < 1.26.4" | - |
Affected
| ||||||