CVE-2021-36153: Github.com/grpc/grpc swift Incomplete Internal State Distinction Vulnerability

HIGH
Advisory Identifier: GHSA-2jx2-qcm4-rf9h
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Advisory Summary

CVE-2021-36153 is a HIGH incomplete internal state distinction vulnerability (General Security Weakness) affecting Github.com/grpc/grpc swift libraries in the SwiftURL ecosystem. The issue involves incomplete internal state distinction in grpcwebtohttp2servercodec. Remediation is available by upgrading affected packages to version 1.2.0.

CVE-2021-36153 at a Glance

CVE Identifier CVE-2021-36153
GHSA Identifier GHSA-2jx2-qcm4-rf9h
Severity HIGH
CVSS v3.1 Base Score N/A
CWE Classification General Security Weakness
Affected Product Github.com/grpc/grpc swift
Package Ecosystem SwiftURL
Published Date
Last Updated

How to Fix CVE-2021-36153

To remediate this vulnerability, upgrade all affected Github.com/grpc/grpc swift dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

github.com/grpc/grpc-swift fixed: 1.2.0 
Upgrade github.com/grpc/grpc-swift to 1.2.0
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for github.com/grpc/grpc-swift

How to Check if You Are Affected

To determine whether your application is affected by CVE-2021-36153, inspect your project dependencies for Github.com/grpc/grpc swift:

inspect dependencies for github.com/grpc/grpc-swift

Analyze the terminal output to locate any version of Github.com/grpc/grpc swift in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.2.0), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under General Security Weakness. In Github.com/grpc/grpc swift, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### Impact Affected gRPC Swift servers are vulnerable to precondition failures when parsing certain gRPC Web requests. 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.

CVE-2021-36153 Affected Github.com/grpc/grpc swift Versions

1 component(s)
Fixed Versions:
1.2.0
Product / Package Ecosystem Affected Versions Fixed Version
github.com/grpc/grpc-swift
 SwiftURL
< 1.2.0
1.2.0

References

GitHub Advisory / Wiki ADVISORY
https://github.com/grpc/grpc-swift/security/advisories/GHSA-2jx2-qcm4-rf9h
NVD — CVE-2021-36153 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-36153
bugs.chromium.org/p/oss-fuzz/issues/d... WEB
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35267
Github.com/grpc/grpc swift Source Repository REPOSITORY
https://github.com/grpc/grpc-swift
Github.com/grpc/grpc swift Source Repository REPOSITORY
https://github.com/grpc/grpc-swift/releases

Frequently Asked Questions

What is CVE-2021-36153?
CVE-2021-36153 is a security vulnerability in Github.com/grpc/grpc swift involving Incomplete Internal State Distinction in GRPCWebToHTTP2ServerCodec under General Security Weakness.
Which Github.com/grpc/grpc swift versions are affected?
Affected versions include releases prior to 1.2.0 across affected packages: github.com/grpc/grpc-swift.
What version fixes CVE-2021-36153?
Upgrading to 1.2.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/grpc/grpc-swift affected?
Yes, github.com/grpc/grpc-swift is affected in releases prior to 1.2.0. Upgrade your dependency to 1.2.0 or later.
What CWE is associated with CVE-2021-36153?
CVE-2021-36153 is classified under General Security Weakness.
How can I check SwiftURL dependencies for CVE-2021-36153?
Run the dependency tree command: 'inspect dependencies for github.com/grpc/grpc-swift'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-2jx2-qcm4-rf9h",
  "modified" : "2023-06-09T19:32:18Z",
  "published" : "2023-06-09T19:32:18Z",
  "aliases" : [ "CVE-2021-36153" ],
  "summary" : "Incomplete Internal State Distinction in GRPCWebToHTTP2ServerCodec",
  "details" : "### Impact\n\nAffected gRPC Swift servers are vulnerable to precondition failures when parsing certain gRPC Web requests. This may lead to a denial of service.\n\n### Patches\n\nThe problem has been fixed in 1.2.0.\n\n### Workarounds\n\nNo workaround is available. Users must upgrade.",
  "severity" : [ ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "SwiftURL",
      "name" : "github.com/grpc/grpc-swift"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.2.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/grpc/grpc-swift/security/advisories/GHSA-2jx2-qcm4-rf9h"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-36153"
  }, {
    "type" : "WEB",
    "url" : "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35267"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/grpc/grpc-swift"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/grpc/grpc-swift/releases"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-06-09T19:32:18Z",
    "nvd_published_at" : "2021-07-09T12:15:00Z"
  }
}