Vulnerability identifier: #VU35101
Vulnerability risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-835
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
envoy
Server applications /
IDS/IPS systems, Firewalls and proxy servers
Vendor: Cloud Native Computing Foundation
Description
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
Envoy 1.12.0 allows a remote denial of service because of resource loops, as demonstrated by a single idle TCP connection being able to keep a worker thread in an infinite busy loop when continue_on_listener_filters_timeout is used."
Mitigation
Install update from vendor's website.
Vulnerable software versions
envoy: 1.12.0
External links
http://blog.envoyproxy.io
http://github.com/envoyproxy/envoy/security/advisories/GHSA-3xvf-4396-cj46
http://github.com/istio/istio/issues/18229
http://groups.google.com/forum/#!forum/envoy-users
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.