Vulnerability identifier: #VU91153
Vulnerability risk: Medium
CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-191
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 attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to integer underflow in QuicheDataReader::PeekVarInt62Length() function. A remote attacker can send a specially crafted request to the affected application, trigger integer underflow and cause a denial of service condition on the target system.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
envoy: 1.0.0 - 1.30.1
External links
http://github.com/envoyproxy/envoy/security/advisories/GHSA-g9mq-6v96-cpqc
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. However, proof of concept for this vulnerability is available.