Denial of service in Envoy



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2024-32475
CWE-ID CWE-253
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 one medium risk vulnerability.

1) Incorrect Check of Function Return Value

EUVDB-ID: #VU88855

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-2024-32475

CWE-ID: CWE-253 - Incorrect Check of Function Return Value

Exploit availability: No

Description

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

The vulnerability exists due to incorrect check of function return value when using auto_sni with :authority header longer than 255 characters. A remote attacker can perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

envoy: 1.13.0 - 1.30.0

CPE2.3 External links

https://github.com/envoyproxy/envoy/security/advisories/GHSA-3mh5-6q8v-25wj
https://github.com/envoyproxy/envoy/commit/b47fc6648d7c2dfe0093a601d44cb704b7bad382


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.



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