Envoy up to 1.27.5/1.28.3/1.29.4/11.30.1 HttpConnectionManager EnvoyQuicServerStream use after free

Summaryinfo

A vulnerability identified as critical has been detected in Envoy up to 1.27.5/1.28.3/1.29.4/11.30.1. This affects the function EnvoyQuicServerStream of the component HttpConnectionManager. This manipulation causes use after free. This vulnerability is registered as CVE-2024-34362. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability has been found in Envoy up to 1.27.5/1.28.3/1.29.4/11.30.1 and classified as critical. Affected by this vulnerability is the function EnvoyQuicServerStream of the component HttpConnectionManager. The manipulation with an unknown input leads to a use after free vulnerability. The CWE definition for the vulnerability is CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. As an impact it is known to affect availability. The summary by CVE is:

Envoy is a cloud-native, open source edge and service proxy. There is a use-after-free in `HttpConnectionManager` (HCM) with `EnvoyQuicServerStream` that can crash Envoy. An attacker can exploit this vulnerability by sending a request without `FIN`, then a `RESET_STREAM` frame, and then after receiving the response, closing the connection.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2024-34362 since 05/02/2024. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 06/12/2024).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

• Envoy

Version

• 1.27.0
• 1.27.1
• 1.27.2
• 1.27.3
• 1.27.4
• 1.27.5
• 1.28.0
• 1.28.1
• 1.28.2
• 1.28.3
• 1.29.0
• 1.29.1
• 1.29.2
• 1.29.3
• 1.29.4
• 11.30.0
• 11.30.1

License

• free

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Discussion