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.
References (2)
Core 2
Core References
Vendor Advisory x_refsource_confirm
https://github.com/envoyproxy/envoy/security/advisories/GHSA-6p83-mfmh-qv38
Patch, Vendor Advisory x_refsource_misc
https://github.com/envoyproxy/envoy/commit/843f9e6a123ed47ce139b421c14e7126f2ac685e
Scores
CVSS v3
7.5
EPSS
0.0009
EPSS Percentile
24.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-416
Status
published
Products (1)
envoyproxy/envoy
1.26.0 - 1.26.7
Published
Feb 09, 2024
Tracked Since
Feb 18, 2026