Resource exhaustion in envoy - CVE-2020-8659
Published: March 9, 2020
Vulnerability identifier: #VU25835
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-8659
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to the affected software consumes excessive amounts of memory when proxying HTTP/1.1 requests or responses with many small (i.e. 1 byte) chunks. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.
Affected software
envoy
Cilium
Cilium
How to mitigate CVE-2020-8659
Install updates from vendor's website.
envoy - addressed in versions 1.12.3, 1.13.1
Cilium - addressed in versions 1.5.13, 1.6.7, 1.7.1
Cilium - addressed in versions 1.5.13, 1.6.7, 1.7.1