Home/CVE/An issue was discovered in Envoy through 1.71.1. There is a remotely exploitable integer overflow in which a very large
CVE

CVE-2021-28682

An issue was discovered in Envoy through 1.71.1. There is a remotely exploitable integer overflow in which a very large

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.

HIGH · CVSS 7.5 EPSS 0.00095
Act now
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-190Integer Overflow or Wraparound
▤

Affected Products & Versions

1
envoyproxy envoyall versions
⚠

Public Exploits & PoCs

1
pocgithub.com · cluster.proto#L36github.com
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD20 May 2021 · 05:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
⚑

Vendor Advisories

2
rhsaRHSA-2021:1324Important
rhsaRHSA-2021:1322Important
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://blog.envoyproxy.ioVendor Advisory
https://github.com/envoyproxy/envoy/releasesThird Party Advisory
https://github.com/envoyproxy/envoy/security/advisories/GHSA-r22g-5f3x-xjggThird Party Advisory
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