Resource exhaustion in envoy - CVE-2023-44487
Published: October 10, 2023 / Updated: December 6, 2024
Vulnerability identifier: #VU81728
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:A/U:Amber
CVE-ID: CVE-2023-44487
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
The vulnerability is being exploited in the wild
Vendor: Cloud Native Computing Foundation
Affected software:
envoy
envoy
Detailed vulnerability description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improperly control of consumption for internal resources when handling HTTP/2 requests with compressed HEADERS frames. A remote attacker can send a sequence of compressed HEADERS frames followed by RST_STREAM frames and perform a denial of service (DoS) attack, a.k.a. "Rapid Reset".
Note, the vulnerability is being actively exploited in the wild.
How to mitigate CVE-2023-44487
Install updates from vendor's website.