CVE-2022-34037: Withdrawn Advisory Denial of Service Vulnerability

HIGH
Advisory Identifier: GHSA-m7gr-5w5g-36jf
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CVSS 7.5
CWE-125
Published
Advisory Summary

CVE-2022-34037 is a HIGH (CVSS 7.5) denial of service vulnerability (CWE-125: Out-of-bounds Read) affecting Withdrawn Advisory libraries in the Go ecosystem. The issue involves out-of-bounds read can lead to client side denial of service. Remediation is available by upgrading affected packages to version 2.5.2.

CVE-2022-34037 at a Glance

CVE Identifier CVE-2022-34037
GHSA Identifier GHSA-m7gr-5w5g-36jf
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-125: Out-of-bounds Read
Affected Product Withdrawn Advisory
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-2022-34037

To remediate this vulnerability, upgrade all affected Withdrawn Advisory dependencies to a patched release.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/caddyserver/caddy fixed: 2.5.2 
Upgrade github.com/caddyserver/caddy to 2.5.2
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/caddyserver/caddy

How to Check if You Are Affected

To determine whether your application is affected by CVE-2022-34037, inspect your project dependencies for Withdrawn Advisory:

inspect dependencies for github.com/caddyserver/caddy

Analyze the terminal output to locate any version of Withdrawn Advisory in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.5.2), 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-125: Out-of-bounds Read, where the product reads data past the end, or before the beginning, of the intended buffer. In Withdrawn Advisory, 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

## Withdrawn Advisory This advisory has been withdrawn because it is a bug, not a vulnerability. According to the maintainer, the bug only affects the client side of the request and cannot cause a denial of service on the server. ## Original Description An out-of-bounds read in the rewrite function at /modules/caddyhttp/rewrite/rewrite.go in Caddy v2.5.1 allows attackers to cause a Denial of Service (DoS) on the client side via a crafted URI.

CVE-2022-34037 Affected Withdrawn Advisory Versions

1 component(s)
Fixed Versions:
2.5.2
Product / Package Ecosystem Affected Versions Fixed Version
github.com/caddyserver/caddy
golang/github.com/caddyserver/caddy
Go
< 2.5.2
2.5.2

References

NVD — CVE-2022-34037 NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-34037
Withdrawn Advisory Source Repository REPOSITORY
https://github.com/caddyserver/caddy/issues/4775
Withdrawn Advisory Source Repository REPOSITORY
https://github.com/caddyserver/caddy/issues/4775#issuecomment-1203388116
Security Fix Commit FIX COMMIT
https://github.com/caddyserver/caddy/commit/693e9b5283e675b56084ecc83d73176cab0ee27c
Withdrawn Advisory Source Repository REPOSITORY
https://github.com/caddyserver/caddy

Frequently Asked Questions

What is CVE-2022-34037?
CVE-2022-34037 is a security vulnerability in Withdrawn Advisory involving Out-of-bounds Read can lead to client side denial of service under CWE-125: Out-of-bounds Read.
Which Withdrawn Advisory versions are affected?
Affected versions include releases prior to 2.5.2 across affected packages: github.com/caddyserver/caddy.
What version fixes CVE-2022-34037?
Upgrading to 2.5.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/caddyserver/caddy affected?
Yes, github.com/caddyserver/caddy is affected in releases prior to 2.5.2. Upgrade your dependency to 2.5.2 or later.
What is the CVSS score of CVE-2022-34037?
CVE-2022-34037 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-2022-34037?
CVE-2022-34037 is classified under CWE-125: Out-of-bounds Read (The product reads data past the end, or before the beginning, of the intended buffer.).
How can I check Go dependencies for CVE-2022-34037?
Run the dependency tree command: 'inspect dependencies for github.com/caddyserver/caddy'. 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-m7gr-5w5g-36jf",
  "modified" : "2024-05-06T14:22:01Z",
  "published" : "2022-07-23T00:00:22Z",
  "withdrawn" : "2024-05-06T14:22:01Z",
  "aliases" : [ "CVE-2022-34037" ],
  "summary" : "Withdrawn Advisory: Out-of-bounds Read can lead to client side denial of service",
  "details" : "## Withdrawn Advisory\nThis advisory has been withdrawn because it is a bug, not a vulnerability. According to the maintainer, the bug only affects the client side of the request and cannot cause a denial of service on the server.\n\n## Original Description\nAn out-of-bounds read in the rewrite function at /modules/caddyhttp/rewrite/rewrite.go in Caddy v2.5.1 allows attackers to cause a Denial of Service (DoS) on the client side via a crafted URI.",
  "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/caddyserver/caddy"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.5.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-34037"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/caddyserver/caddy/issues/4775"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/caddyserver/caddy/issues/4775#issuecomment-1203388116"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/caddyserver/caddy/commit/693e9b5283e675b56084ecc83d73176cab0ee27c"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/caddyserver/caddy"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-125" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-07-27T22:12:07Z",
    "nvd_published_at" : "2022-07-22T15:15:00Z"
  }
}