Envoy up to 1.27.5/1.28.3/1.29.4/11.30.1 Decompression infinite loop

Summaryinfo

A vulnerability was found in Envoy up to 1.27.5/1.28.3/1.29.4/11.30.1. It has been classified as problematic. Affected by this issue is some unknown functionality of the component Decompression Handler. The manipulation leads to infinite loop. This vulnerability is referenced as CVE-2024-32976. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in Envoy up to 1.27.5/1.28.3/1.29.4/11.30.1 and classified as critical. This issue affects an unknown code block of the component Decompression Handler. The manipulation with an unknown input leads to a infinite loop vulnerability. Using CWE to declare the problem leads to CWE-835. The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop. Impacted is availability. The summary by CVE is:

Envoy is a cloud-native, open source edge and service proxy. Envoyproxy with a Brotli filter can get into an endless loop during decompression of Brotli data with extra input.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2024-32976 since 04/22/2024. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1499 for this issue.

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

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Discussion