CVE-2022-24777 Denial of Service via reachable assertion in grpc-swift

2022-03-2516:35:09

CWE-617

GitHub_M

www.cve.org

denial of service

reachable assertion

grpc

remote procedure call (rpc)

vulnerable

version 1.7.2

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

0.001

Percentile

37.0%

JSON

grpc-swift is the Swift language implementation of gRPC, a remote procedure call (RPC) framework. Prior to version 1.7.2, a grpc-swift server is vulnerable to a denial of service attack via a reachable assertion. This is due to incorrect logic when handling GOAWAY frames. The attack is low-effort: it takes very little resources to construct and send the required sequence of frames. The impact on availability is high as the server will crash, dropping all in flight connections and requests. This issue is fixed in version 1.7.2. There are currently no known workarounds.

CNA Affected

[
  {
    "product": "grpc-swift",
    "vendor": "grpc",
    "versions": [
      {
        "status": "affected",
        "version": "< 1.7.2"
      }
    ]
  }
]