CVE-2020-36559: Github.com/go aah/aah Path Traversal Vulnerability

HIGH
Advisory Identifier: GHSA-vp56-r7qv-783v
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CVSS 7.5
CWE-22
Published
Advisory Summary

CVE-2020-36559 is a HIGH (CVSS 7.5) path traversal vulnerability (CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')) affecting Github.com/go aah/aah libraries in the Go ecosystem. The issue involves ahh vulnerable to path traversal. Remediation is available by upgrading affected packages to version 0.12.4.

CVE-2020-36559 at a Glance

CVE Identifier CVE-2020-36559
GHSA Identifier GHSA-vp56-r7qv-783v
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Product Github.com/go aah/aah
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:H/I:N/A:N).

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 High (C:H)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2020-36559

To remediate this vulnerability, upgrade all affected Github.com/go aah/aah 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/go-aah/aah fixed: 0.12.4 
Upgrade github.com/go-aah/aah to 0.12.4
aahframe.work fixed: 0.12.4 
Upgrade aahframe.work to 0.12.4
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/go-aah/aah

How to Check if You Are Affected

To determine whether your application is affected by CVE-2020-36559, inspect your project dependencies for Github.com/go aah/aah:

inspect dependencies for github.com/go-aah/aah

Analyze the terminal output to locate any version of Github.com/go aah/aah in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.12.4), 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-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'), where the product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. In Github.com/go aah/aah, 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

Due to improper santization of user input, HTTPEngine.Handle allows for directory traversal, allowing an attacker to read files outside of the target directory that the server has permission to read.

CVE-2020-36559 Affected Github.com/go aah/aah Versions

2 component(s)
Fixed Versions:
0.12.4
Product / Package Ecosystem Affected Versions Fixed Version
github.com/go-aah/aah
golang/github.com/go-aah/aah
Go
< 0.12.4
0.12.4
aahframe.work
golang/aahframe.work
Go
< 0.12.4
0.12.4

References

NVD — CVE-2020-36559 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-36559
Github.com/go aah/aah Source Repository REPOSITORY
https://github.com/go-aah/aah/issues/266
Github.com/go aah/aah Source Repository REPOSITORY
https://github.com/go-aah/aah/pull/267
Security Fix Commit FIX COMMIT
https://github.com/go-aah/aah/commit/881dc9f71d1f7a4e8a9a39df9c5c081d3a2da1ec
Github.com/go aah/aah Source Repository REPOSITORY
https://github.com/go-aah/aah
pkg.go.dev/vuln/go-2020-0033 WEB
https://pkg.go.dev/vuln/GO-2020-0033

Frequently Asked Questions

What is CVE-2020-36559?
CVE-2020-36559 is a security vulnerability in Github.com/go aah/aah involving ahh vulnerable to Path Traversal under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
Which Github.com/go aah/aah versions are affected?
Affected versions include releases prior to 0.12.4 across affected packages: github.com/go-aah/aah, aahframe.work.
What version fixes CVE-2020-36559?
Upgrading to 0.12.4 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/go-aah/aah affected?
Yes, github.com/go-aah/aah is affected in releases prior to 0.12.4. Upgrade your dependency to 0.12.4 or later.
Is aahframe.work affected?
Yes, aahframe.work is affected in releases prior to 0.12.4. Upgrade your dependency to 0.12.4 or later.
What is the CVSS score of CVE-2020-36559?
CVE-2020-36559 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:H/I:N/A:N.
What CWE is associated with CVE-2020-36559?
CVE-2020-36559 is classified under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.).
How can I check Go dependencies for CVE-2020-36559?
Run the dependency tree command: 'inspect dependencies for github.com/go-aah/aah'. 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-vp56-r7qv-783v",
  "modified" : "2024-05-20T19:41:41Z",
  "published" : "2022-12-28T00:30:23Z",
  "aliases" : [ "CVE-2020-36559" ],
  "summary" : "ahh vulnerable to Path Traversal",
  "details" : "Due to improper santization of user input, HTTPEngine.Handle allows for directory traversal, allowing an attacker to read files outside of the target directory that the server has permission to read.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/go-aah/aah"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.12.4"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Go",
      "name" : "aahframe.work"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.12.4"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-36559"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/go-aah/aah/issues/266"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/go-aah/aah/pull/267"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/go-aah/aah/commit/881dc9f71d1f7a4e8a9a39df9c5c081d3a2da1ec"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/go-aah/aah"
  }, {
    "type" : "WEB",
    "url" : "https://pkg.go.dev/vuln/GO-2020-0033"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-12-30T19:07:19Z",
    "nvd_published_at" : "2022-12-27T22:15:00Z"
  }
}