Multiple DoS vulnerabilities in Envoy

Published: 2024-12-19 | Updated: 2024-12-23

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2024-53270 CVE-2024-53271
CWE-ID	CWE-476 CWE-399
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	envoy Server applications / IDS/IPS systems, Firewalls and proxy servers
Vendor	Cloud Native Computing Foundation

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) NULL pointer dereference

EUVDB-ID: #VU101847

Risk: Medium

CVSSv4.0: 6.6 [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/E:U/U:Green]

CVE-ID: CVE-2024-53270

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error during the H/2 upstream reset. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

envoy: 1.29.0 - 1.32.2

CPE2.3

External links

https://github.com/envoyproxy/envoy/pull/37743/commits/6cf8afda956ba67c9afad185b962325a5242ef02
https://github.com/envoyproxy/envoy/security/advisories/GHSA-q9qv-8j52-77p3
https://github.com/envoyproxy/envoy/releases/tag/v1.29.12
https://github.com/envoyproxy/envoy/releases/tag/v1.30.9
https://github.com/envoyproxy/envoy/releases/tag/v1.31.5

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Resource management error

EUVDB-ID: #VU101846