CVE-2021-28682
HIGH severity · CVSS 7.5 · Integer overflow
7.5CVSS HIGH
Summary
An issue was discovered in Envoy through 1.71.1. There is a remotely exploitable integer overflow in which a very large grpc-timeout value leads to unexpected timeout calculations.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactNone
Integrity impactNone
Availability impactHigh
Exploit probability (EPSS)2%
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Additional information
- NVD record
- https://blog.envoyproxy.ioAdvisory
- https://github.com/envoyproxy/envoy/releasesAdvisory
- https://github.com/envoyproxy/envoy/security/advisories/GHSA-r22g-5f3x-xjggAdvisory
- https://github.com/envoyproxy/envoy/blob/15e3b9dbcc9aaa9d391fa8033904aad1ea1ae70d/api/envoy/api/v2/cluster.proto#L36Advisory