CVE-2023-28119: Github.com/crewjam/saml Denial of Service Vulnerability

HIGH
Advisory Identifier: GHSA-5mqj-xc49-246p
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CVSS 7.5
CWE-770
Published
Advisory Summary

CVE-2023-28119 is a HIGH (CVSS 7.5) denial of service vulnerability (CWE-770: Allocation of Resources Without Limits or Throttling) affecting Github.com/crewjam/saml libraries in the Go ecosystem. The issue involves crewjam/saml vulnerable to denial of service via deflate decompression bomb. Remediation is available by upgrading affected packages to version 0.4.13.

CVE-2023-28119 at a Glance

CVE Identifier CVE-2023-28119
GHSA Identifier GHSA-5mqj-xc49-246p
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-770: Allocation of Resources Without Limits or Throttling
Affected Product Github.com/crewjam/saml
Package Ecosystem Go
Published Date
Last Updated

Security Impact

CVSS: 7.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity None (I:N)
Availability High (A:H)

How to Fix CVE-2023-28119

To remediate this vulnerability, upgrade all affected Github.com/crewjam/saml 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/crewjam/saml fixed: 0.4.13 
Upgrade github.com/crewjam/saml to 0.4.13
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/crewjam/saml

How to Check if You Are Affected

To determine whether your application is affected by CVE-2023-28119, inspect your project dependencies for Github.com/crewjam/saml:

inspect dependencies for github.com/crewjam/saml

Analyze the terminal output to locate any version of Github.com/crewjam/saml in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.4.13), 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 CWE-770: Allocation of Resources Without Limits or Throttling, where the product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated. In Github.com/crewjam/saml, 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

Our use of flate.NewReader does not limit the size of the input. The user could pass more than 1 MB of data in the HTTP request to the processing functions, which will be decompressed server-side using the Deflate algorithm. Therefore, after repeating the same request multiple times, it is possible to achieve a reliable crash since the operating system kills the process.

CVE-2023-28119 Affected Github.com/crewjam/saml Versions

1 component(s)
Fixed Versions:
0.4.13
Product / Package Ecosystem Affected Versions Fixed Version
github.com/crewjam/saml
golang/github.com/crewjam/saml
Go
< 0.4.13
0.4.13

References

GitHub Advisory / Wiki ADVISORY
https://github.com/crewjam/saml/security/advisories/GHSA-5mqj-xc49-246p
NVD — CVE-2023-28119 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-28119
Security Fix Commit FIX COMMIT
https://github.com/crewjam/saml/commit/8e9236867d176ad6338c870a84e2039aef8a5021
Github.com/crewjam/saml Source Repository REPOSITORY
https://github.com/crewjam/saml

Frequently Asked Questions

What is CVE-2023-28119?
CVE-2023-28119 is a security vulnerability in Github.com/crewjam/saml involving crewjam/saml vulnerable to Denial Of Service Via Deflate Decompression Bomb under CWE-770: Allocation of Resources Without Limits or Throttling.
Which Github.com/crewjam/saml versions are affected?
Affected versions include releases prior to 0.4.13 across affected packages: github.com/crewjam/saml.
What version fixes CVE-2023-28119?
Upgrading to 0.4.13 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/crewjam/saml affected?
Yes, github.com/crewjam/saml is affected in releases prior to 0.4.13. Upgrade your dependency to 0.4.13 or later.
What is the CVSS score of CVE-2023-28119?
CVE-2023-28119 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2023-28119?
CVE-2023-28119 is classified under CWE-770: Allocation of Resources Without Limits or Throttling (The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.).
How can I check Go dependencies for CVE-2023-28119?
Run the dependency tree command: 'inspect dependencies for github.com/crewjam/saml'. 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-5mqj-xc49-246p",
  "modified" : "2023-03-22T21:49:43Z",
  "published" : "2023-03-22T21:23:25Z",
  "aliases" : [ "CVE-2023-28119" ],
  "summary" : "crewjam/saml vulnerable to Denial Of Service Via Deflate Decompression Bomb",
  "details" : "Our use of flate.NewReader does not limit the size of the input. The user could pass more than 1 MB of data in the HTTP request to the processing functions, which will be decompressed server-side using the Deflate algorithm. Therefore, after repeating the same request multiple times, it is possible to achieve a reliable crash since the operating system kills the process.\n",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/crewjam/saml"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.4.13"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/crewjam/saml/security/advisories/GHSA-5mqj-xc49-246p"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-28119"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/crewjam/saml/commit/8e9236867d176ad6338c870a84e2039aef8a5021"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/crewjam/saml"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-770" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-03-22T21:23:25Z",
    "nvd_published_at" : "2023-03-22T20:15:00Z"
  }
}