#VU91157 Use of Weak Credentials in envoy - CVE-2024-23326

Vulnerability identifier: #VU91157

Vulnerability risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-23326

CWE-ID: CWE-1391

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 compromise the target system.

The vulnerability exists due to the Envoy incorrectly accepts HTTP 200 response for entering upgrade mode. A remote attacker can gain access to sensitive information on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

envoy: 1.0.0, 1.1.0 - 1.19.5, 1.2.0 - 1.29.4, 1.3.0 - 1.30.1, 1.4.0, 1.5.0, 1.6.0, 1.7.0 - 1.7.1, 1.8.0, 1.9.0 - 1.9.1

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External links
https://github.com/envoyproxy/envoy/security/advisories/GHSA-vcf8-7238-v74c

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Q & A

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.