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CVE-2023-27492

MEDIUM
Published 2023-04-04T18:34:44.470Z
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CVSS Score

V3.1
4.8
/10
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:H
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.000
probability
of exploitation in the wild

There is a 0.0% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.083
Higher than 8.3% of all CVEs

Attack Vector Metrics

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED

Impact Metrics

Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Description

Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9, the Lua filter is vulnerable to denial of service. Attackers can send large request bodies for routes that have Lua filter enabled and trigger crashes.

As of versions versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9, Envoy no longer invokes the Lua coroutine if the filter has been reset. As a workaround for those whose Lua filter is buffering all requests/ responses, mitigate by using the buffer filter to avoid triggering the local reply in the Lua filter.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

envoyproxy

envoy

Affected Versions:

>= 1.25.0, < 1.25.3 >= 1.24.0, < 1.24.4 >= 1.23.0, < 1.23.6 < 1.22.9

References

https://github.com/envoyproxy/envoy/security/advisories/GHSA-wpc2-2jp6-ppg2
Published: 2023-04-04T18:34:44.470Z
Last Modified: 2025-02-11T16:13:57.894Z
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