Impact

Affected gRPC Swift servers are vulnerable to uncontrolled recursion and stack consumption when parsing certain payloads. This may lead to a denial of service.

Patches

The problem has been fixed in 1.2.0.

Workarounds

No workaround is available. Users must upgrade.

References

• GHSA-4rhq-vq24-88gw
• https://nvd.nist.gov/vuln/detail/CVE-2021-36154
• https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35274
• https://github.com/grpc/grpc-swift/releases/tag/1.2.0