High severity · published Feb 9, 2024
CVE-2024-23322
Envoy crashes when idle and request per try timeout occur within the backoff interval
7.5
CVSS
0.7%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 52% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EN
envoy · envoyproxy
>= 1.29.0, < 1.29.1; >= 1.28.0, < 1.28.1; >= 1.27.0, < 1.27.3; < 1.26.7 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-23322
CVE.org
https://www.cve.org/CVERecord?id=CVE-2024-23322
Patch
https://github.com/envoyproxy/envoy/commit/843f9e6a123ed47ce139b421c14e7126f2ac685e
Vendor Advisory
https://github.com/envoyproxy/envoy/security/advisories/GHSA-6p83-mfmh-qv38
More from envoy
9.8
CVE-2026-111497
Out-of-Bounds Write in Google Brotli Decoder
7.5
CVE-2023-44487
HTTP/2 Rapid Reset Attack Vulnerability
10.0
CVE-2019-9901
Envoy 1.9.0 and before does not normalize HTTP URL paths
9.8
CVE-2023-35941
Envoy vulnerable to OAuth2 credentials exploit with permanent validity
9.8
CVE-2023-27488
Envoy gRPC client produces invalid protobuf when an HTTP header with non-UTF8 value is received.